leafbike 1500w hub @ maximum power

Took the motor to the limit after venting it. Could have given it more amps, but it was hard enough to keep the front end down at my settings already... :)
Parts list:
+ Frame: Turner 02 dual suspension.
+ Motor: 1500w leafbike hub in a 26" wheel, vented
+ Torque arms: hybrid of ebikes.ca torque arms and custom plates/clamps. Very nice fit and no slop!
+ Controller: em3ev 18FET infineon clone, programmed to 85A peak
+ Battery: 76v 10AH 20C Turnigy RC Lipo, rated to output up to 200a.
+ Rear brake: no mechanical brake, just regen.
+ Front brake: 203mm tektro auriga e-comp - hydraulic.
+ Other bits: 52T front chainring, 11t-34t 7 speed shimano freewheel ( can pedal up to 45mph ), cycle analyst display, em3ev triangle bag.

[@Hamid9e]

this is so sick over 5kw on this little hub motor. i cant wait to do something with my 1500w hub motor. im currently running it at 2000w.

[@chrisduke3251]

I'm glad I looked at your video's again. It's been a while. Been building mid drive 100%, and it's time to go DD hub. I was going to order a Voilamart 1500W kit for a cheap project. I may still do that, but I'm definitely picking up a Leaf next spring when business starts to pick up again. Then a Mxus 3Kw V3 for a fat bike project. Thanks for all the replies you've made over the years on this post. They have been enlightening. I'll have to check out the build post over on ES as well.

[@neptronix]

You're welcome. Glad to have inspired you!

[@fyrodimi]

Nice to find a leafbike video. My 1500W leaf motor is ordered. Going to combine with 52V-27Ah Li ion.

[@TomZebra]

How did it go?

[@atomshoemaker5297]

Id Really like to get one! do you have a like to buy? I cant seem to find it on ebay.

[@michaelmcgregor2533]

@@atomshoemaker5297 They don't sell through ebay. You'll have to go to leafbike.com. The shipping costs are kind of high.

[@joeclooney1997]

goes like the clappers that thing, nicely done

[@bradleyborrowman2115]

So I now know that I will be sticking with at most a 1000w kit. I do NOT need to go almost 60mph uphill 😂

[@kenda993]

I have the leaf 1500w motor 5t that is not vented but has ferritefluid and a hub sink and has a temp sencer in the windings I normally run it at 5kw and it never gets very warm I sometimes go on the side of the high way pump it to 100a or about 10.5kw it tops out at 65mph without flux weakening it gets to 50 mph in about 4 sec. And 60 mph in abut 6.7s +or- 1sec extreme torque can Willie at 50 miles per hour Motor windings temp blast up fast wile accelerating but once I reach max speed the watts go down and the temp goes down a little and than slowly rises. As long as you have a temp sencer THIS MOTOR CAN HANDLE ALOT

[@neptronix]

You know, ferrofluid was still a science experiment and hubsinks didn't exist when i built this. I imagine your setup is a lot more fun than mine. But yeah, this motor is a pleasant surprise, isn't it? It was the dyno graph listed on leaf's website that turned me into a first adopter. Surprisingly, nobody seems to have one upped them for a hub motor yet. I'm still waiting for something better. At those power levels, i would switch to a MXUS 3kW for efficiency reasons.. the 15mm wider stator will handle the load so much better. Watch out for those willies.. ;)

[@Mikeecoman]

That's fast mate- very powerful - well done ;-)

[@Jack-pt2it]

Sound in the beginning of the video is like an excerpt out of Jurassic Park

[@cdevidal]

Must feel like flying

[@BrunoPOWEEER]

Ohhh yeaahhh so much POWWEEEEEEEEEEERRR

[@neptronix]

It looks like i'll be running one of these in a 20 inch wheel soon on my dual suspension semi recumbent. Prepare yourself for part 2, my dude.

[@erarandom1116]

Just got the 1500w 48v kit and a higher power 84v controller and 60v 20ah battery with 50 amp continuous discharge should be a good build, looking for a bit higher speed without overheating the motor.

[@stanson5850]

Thats what I've been considering. How did this work out for you??

[@3dkiller]

insane...... great build !

[@anunakizz]

You think that with a smaller wheel you get better torque ?, because that is my hypothesis, also tell me if it is more expensive an electric bicycle than a motorcycle scooter gasoline? Why do you buy electric bikes? Because the most expensive is the battery and this lithium battery lasts maximum 3 years with moderate use and less than 2 with a constant use.

[@neptronix]

Absolutely. But on this power setting, the bike already was threatening to flip me on my head, even though i was leaning forward as much as i could ( notice the handlebar configuration ). If you go with a smaller wheel and up the volts, you had better have a long wheelbase, or at least excellent coordination and core strength!

[@neptronix]

Uhh, also.. i filmed this video using a 5 year old lithium pack. Early videos were filmed on a 10 year old camera with the original lithium battery in it. If you treat them right and spec them conservatively for the job they will last a very long time. The battery pack i used in this video is now 7 years old and is still performing light duty on a 1000w ebike my wife uses.

[@jerryjordan8551]

@@neptronix Where Did you get it at or build; Thanks @[e-mail]

[@neptronix]

@@jerryjordan8551 I built it myself. endless-sphere.com/forums/viewtopic.php?f=30&t=66489

[@kingborgtv3726]

Great video and nice bike. Keep up the good work

[@neptronix]

Thanks ahhhhhnold :)

[@Louis-lu5wh]

I jus went on his channel and like WTFFFF?!?!?

[@blegend6538]

Hey i just bought a 1500w 48v ebike kit and i bought a 48v 26ah bms 40a battery and when i connected them i got a spark between the cable i checked it is normal? that black goes on black and red on red im confused can anyone help me please ?????

[@206robert206]

I can't imagine I good distance per charge.... But then again, it does go unnecessarily fast for a bicycle (which I like 😂).

[@neptronix]

This bike was quite efficient for what it is, but at higher speeds ( 40-45mph continuous ), the range just disappears. Part of the reason why i got into recumbent bikes.

[@Bmr4life]

Damn, that's awesome.

[@joelhill4107]

excellent bike! I want to build one myself.

[@neptronix]

Joel Hill In the words of Ferris Bueller.. "If you have the means, i highly recommend it"

[@luckylou6614]

I have the hub where can I find controller and computer for 72 volt. Battery? Pleaš

[@user619tlsdca5]

Was that a 72volt battery? I notice the meter of amps. Very nice video, long test run and gave me indication of using higher voltage. It is not over working motor with it?

[@Steven__stark]

Please I need help I bought a motor like this 1500w and I need to buy the battery now.. Is 52v 20amps will be good? Please I need advices asap also what will be the range? Thanks

[@neptronix]

You're going to want a battery that can output 80 amps of you ordered the default motor ( 4T winding ). You can use the ebikes.ca motor simulator to estimate range. use the MXUS 4503 for a close approximation ( it is a little slower per volt than the 4T, but only ~7% ) www.ebikes.ca/tools/simulator.html?bopen=false&motor=MX4503&cont=cust_60_140_0.03_V&batt=B5216_GA&axis=mph&blue=Lbs

[@johnmartinez4943]

Cot damn that is fast.

[@neptronix]

Yeah, man. It's scared the shit out of everyone that's ridden it.... including me.

[@kendelaware1826]

Pretty damn fast!

[@dieglhix]

this is fucking impressive

[@neptronix]

+Diego V Thanks!

[@ahsell1598]

Nice bike! It looks so powerful. How much was this project total price?

[@neptronix]

Something like 2 grand. The bike frame was a $250 ebay special, and i used RC Lipo.. and the leafmotor was cheap as hell. The tires themselves were $70 each. Most premium part of the build, lol.

[@codyviera92]

That doesn't add up to 2 grand lol. Still working 4 years later? Or still have it lol

[@E-sk8Fr]

great video ! this is a beast.

[@em2k20]

okayplayer got the same motor with the supplied controller from leafbike going 44 on flats with 10ah 70v

[@neptronix]

em2k20 Why so slow? are you not giving it enough amps... voltage sag.. what?

[@em2k20]

neptronix im doing more mph with less watts than you slow 44mph I think not

[@neptronix]

em2k20 I hit 60mph in this video on 76v nominal. I do 45mph on 48v in 120% mode on my controller. You should be going faster on your voltage. You probably suffer extreme voltage sag.

[@em2k20]

neptronix i am only using a 20amp continuous controller an 60v for 49mph this motor is amazing

[@alireza071]

Hi I've got 48v 1500w hub motor ebike with 52v 20amp battry my controller 48v to 84v 50a I wonder if I upgrade to 72v battry 20amp battry does it make any difference to speed and power my bike isit worth it or not any1 with knowledge advice please thank you

[@neptronix]

Of course it will make a difference. The only thing is that you'll need a higher output battery to deliver the extra power. If you have the leafmotor like i have, it really wants 60-80A, if your battery can provide it! It's hard to find a very powerful battery, and also to mount such a big and powerful battery on a bike. I used RC Lipo which is dangerous but can deliver up to 200A. Also if you look at my previous videos you will see me running this motor on 46v, and on this video i am running about 76v.

[@Andy-zr4mi]

Would this motor hub go 40mph with a 48v 20ah triangle battery? If not please show me the exact battery i need to achieve this speed?

[@neptronix]

If the 20AH battery is capable of really high C output, yeah. Like 8C or preferably like 10-15C+ rated. You'll have an amp draw of 40-80A. You really need a strong battery.

[@dahaproject3498]

I should grt leafmotor 1000w 48v or 1500 w?? is good for comuting? can it hit 60 km/h?

[@warlockboyburns]

my 500w hub motor worked at 3300w for a few miles before it died so 6600w should be safe for a 1500w-er

[@neptronix]

The motor was clearly not up to the task and i imagine you know it has died for overheating. The key to producing power in any electric motor is to control the heat you are producing. You will notice that this is a 1500w rated motor that i have found should have been rated for 2000w at the factor. In addition, i have added cooling holes to allow it to shed even more heat. So my 6000w on a 2000w motor was much less of a stretch than what you did. If you follow my formula for creating this excellent machine, then you will have the same result. If you build this thing and enjoy it, do let me know. :)

[@nukesaway4806]

You have 1 dislike and 20 negative comments. I think that what you are doing is safe to me as long as you have a helmet and brakes. I mean, if all you need to ride a motorcycle is a helmet , then you are fine to test wherever you want on an E bike. I would like to put a car alternator in the front wheel, and a washing machine motor in the rear!

[@neptronix]

+Nukes Away This was just a demo of what the motor could do, due to it's high efficiency up to 60mph. Do i ride that fast? no way. I do 30-45 in the car lanes, and ride it like a motorcycle. it's very capable of handling those speeds. It's basically a light motorcycle. anyway, an alternator plus a washing machine motor would be actually less powerful than this hub motor.. :)

[@bobbarker1667]

Can i get this motor on a 27.5 inch rim with 3.0 tire pleasehelp i cant figure this crap out

[@wilmarkus583]

Does this motor and battery kit still work? If it does, about how much has the battery storage went down (I.E. 80%). If it doesn't work anymore, when did it stop working? If it still works, is there anything else that has deteriorated about the build? Am considering buying a similar build from leaf bike but for a 26" X 4" fat tire bike.

[@neptronix]

Oh, i sold this bike off years ago when i decided to switch to recumbents. The guy i sold it to is still riding it as far as i know.

[@mtnmandeluxe5429]

town appears to be silt lake city

[@codyviera92]

Over 50mph holy balls! 1500watt and what battery are you running? Have 1000watt 48v 20ah, 30 on flat and range is 30 miles full throttle no peddling.

[@neptronix]

See the end of the video. I've got some 72v RC Lipos that kick out more power than the motor can even handle.

[@conversationswithme8601]

Will a 36v 500w brushless hub motor operate at 48v?

[@patrickhinkle7667]

Hey man, this is really impressive. I'm looking into leafbike hub motors and just wanted to ask someone who has experience with them. What controller were you using on the build? Also, is your motor the 4t wind? Thanks again

[@neptronix]

What i'm using is mentioned in the previous video, and yeah i have the default 4T winding.

[@V37VOiYi]

Could you please provide link to everything you have on that exact bike or the updated version of these? Also I wanted to know are you able to provide more power through the 1500w motor safety bc you look like your pushing 2500w even more?

[@jpmorgan187]

ever get worried about the police? In Utah, electric bicycles are defined as bikes powered by an electric motor that produces no more than 1,000 watts, and has a top speed of 20 MPH on a flat surface.

[@Dennis4abril]

this is good to go to work only in the same city or town.

[@neptronix]

With today's lithium technology you can travel much further than that. The best cell currently available can yield a 200 mile range at 20mph on a large enduro frame, or 100 miles with a small triang.e

[@indaskys]

Amazing looks like fun, nice work, really keen :) would this set up on a bmx, how far can you travel with your batteries.

[@m4d_al3x]

Bmx is way to unstable

[@frank-eboy8761]

i just received a 1500 watt hub wheel kit from leaf bike and the spokes all seem bent where they attach to the rim ! i notified leafbike regarding this ! just wanted yo know if your spokes were strait or bent at the rim please let me know

[@neptronix]

+frank-e boy Mine was fine. Just needed truing out of the box.

[@trinidtrucker5267]

hi I got a ccm bike that I want to make it in to an ebike but it heavy can u help me out by making it like yours pls

[@neptronix]

+Kedar Ali $25/hr. You bring the bike. :)

[@ionut8091]

hello nice bike .. do u use regen on it to stop? i have the same motor as you and 52v bat and i can get ofer 48 km/h way i don't know

[@horror780]

I need one of those frame bags

[@sanesaint8725]

Good job though

[@jkrsecret]

Excellent. What is your opinion for everyday bike use? I look to build one and till know I think top speed of 50kph is enough. regards

[@neptronix]

+jkrsecret 50kph ( around 31mph ) is the perfect speed for this motor, because it's peak efficiency happens right around 30mph. For every day bike use, i love it. It was overheating on me after doing ~5 miles of 45mph ( 72kph ) though, and my roads are at that speed with no bike lanes available, so i switched to a MXUS 3kW motor in order to handle it. If my road speeds were a little slower, i would still be using the leaf motor, because it can handle 40mph ( 64kph ) continuously.

[@triplehelixproductions]

@@neptronix is the stock controller for the mxus 3kw kit sufficient, or is the programmable 18fet a better choice?

[@neptronix]

@@triplehelixproductions I don't know what kit you're referring to, but i just used an 18FET infineon clone controller from lyen. Or at lower voltages, you can get away with a 12FET with 3077 FETs if running the same 3T. Otherwise if you use a 4T/5T MXUS, you'll need higher voltage and a 12FET with 4110's would be better. powervelocity on the endless sphere forum also has some cool programmable controllers. They also have the rare 15FET, which would be a great match for the 35mm-45mm hubs like the leaf 1.5kw and MXUS 3kw.

[@jamiljeter4960]

Where can i buy this kit at I would like the 2000w I've been looking on Internet and I can't find it... Also my weight is 248 I like speed and I would be traveling 20/25miles one way can you help me thanks...

[@neptronix]

jamil jeter I talk about my bike and the kit here: endless-sphere.com/forums/viewtopic.php?f=6&t=62939&start=50

[@tipsy113]

Hey neptronix :) im on ES too and using my BBS02 for track and hill climbing. I wanna try and build another ebike with a different setup, a Hub motor like this is highly recommended by you of course(nice post on ES by the way). I was just wondering what winding should i get if I'll use this on trails and Hill climbing. Not too steep of a hill though :) and any suggestions? This is a cheap motor by the way, bang for the buck! Thanks Neptronix!

[@tipsy113]

Also, ill just be using a 48v 10ah battery Samsung 25r for this.. Or possibly a 48v 15ah lifepo4. What speeds will i get if im limited to 30amps?

[@anunakizz]

hi, the brand of the motor is all similar in power and torque, the chinesse is ok?

[@cogangeezer]

Ive got a 1500w on order , cant wait ! Nice vid , is it fairly easy to get the front wheel up with the power ?

[@neptronix]

Richard Williams Hell yeah. The default winding will wheelie if you aren't positioned forward enough at 80-90 amps x 48v. At least with this 190lb rider, anyway. On 72v and 90 amps, it's hard to keep the front end down. You really have to ease into the throttle, otherwise you're gonna land on your head.

[@cogangeezer]

neptronix Sounds great , cant wait , ive just subscribed to you and ile post a vid of my setup with you when its sorted . Ime just altering a cheap triangle bag to accomadate my 48v 20ah battery .... Nice one !

[@millionmouth1]

Where can I find those the battery for this build.

[@helloman1976]

Your title says 1500W but your meter on your bike says 5000W lol, which is it?

[@01imh]

3 years later at I still don’t know :(

[@Hamid9e]

@@01imh he's running 76v and pumping 85A so he is pushing 5000-6000w

[@ahtiramqureshi9041]

hello, would it be possible for you to list the parts and their weblinks??

[@neptronix]

Here's my build thread on endless sphere. I started out with a bbs02, so just avoid the first couple posts. endless-sphere.com/forums/viewtopic.php?f=6&t=62939&hilit=super+hiryuu&start=50

[@infonator1]

Hey bro where did you buy the leaf motor can't find it? Thanks

[@phillmoorewot]

Epic motor and videos on the leaf motor thank you for being so informative ;) ive just bought one of these myself an have a 12 fet 4110 infineon Controller what settings do you use on your 48v nominal an 72v nominal ie battery an phase amp settings? (I also have 20c lipos either 48v 15ah or 72v 10ah) are you on endless sphere as I recognise your user name...if so hi I'm Phillmoore =D

[@neptronix]

Phillip Moore I'm on endless sphere. I run about 90A batt, 230A phase currently.

[@anunakizz]

You think that with a smaller wheel you get better torque ?, because that is my hypothesis, also tell me if it is more expensive an electric bicycle than a motorcycle scooter gasoline? Why do you buy electric bikes? Because the most expensive is the battery and this lithium battery lasts maximum 3 years with moderate use and less than 2 with a constant use.

[@neptronix]

Of course a smaller wheel has better torque. For the same reason that a lower gear on your car produces more torque. I don't buy electric bikes, i build them. The battery i am riding on is 7 years old and still operates today.

[@Tonyplat98]

hahha good answer. where did you get that batteries die after only couple years from? these batteries today can last up to if not more than 10 years and at that point they pretty much pay for themselves

[@stestar09]

Haha that is way too fast!! great upper limit test though, are the 1500w ones on ebay at the moment the same type as your hub drive? I'm about to order 1 but I want yours is there a particular place you got yours from? thanks and your display is different from the ebay ones , like the fact you have a watt readout and can ride it efficiently 👍👍 subbed

[@ayhantanis831]

No one replied your comment lol 😂

[@stuffonmyduck8551]

@@ayhantanis831 no one cares about you lol 😂😂😂😂

[@sergiourquijo4000]

i want to make a something similar. My biggest concern is with the motor now; wont the motor coils short out after a few km riding it at 70vots and such a high amperage?

[@neptronix]

Yes, the motor will overheat after around 10 minutes of this. This was just a demonstration of what the motor was capable of. With the venting holes i cut, i found that this motor does around 2000w continuous, so a speed limit to about 40mph would be more suitable, which would mean you'd want to run 48v on this winding instead.

[@valentinla1305]

Supplying the electric motor through the control unit by using a portable generator like the Honda EU2000i may work quite well. What do you think?

[@neptronix]

You're going to lose 20-30% of the gasoline motor's power output ( on top of it being only ~30% efficient in the first place ) if you do that. You will also need some voltage convertors as well. Might as well build a gas bike... because that's more expensive than just using battery only. My peak power here is 6000W, so you would need a pretty good sized gas motor to pull off what my 15lb battery pack puts out. I'm barely touching the battery's limits also.

[@valentinla1305]

I thought that a 1500 motor would have a peak power consumption of 1500 watts. What does this power rating corresponds to?

[@neptronix]

Look at the screen when it is shown.. you might have to slow down the video.. i'm putting way more than 1500w in. Nonetheless your idea is still expensive and heavy even if you limit to 1500w. If you want to learn more about how to build electric bikes like this, there is a good forum for it.. endless-sphere.com

[@lterbell]

Very nice bike.I would like to build an e bike using the same leaf motor you are using. I have a Kona 27.5" bikeand a 52 v battery from Luna Cycle. Can you recommend a controller for me? I would be satisfied if my bike can go about 40 mph.Do you recommend the kit from Leaf motors that is rated 48 v 1500 w?

[@neptronix]

Em3ev has some good controllers for sale. i'd recommend a 4011 18FET for >70A or 3077 12FET for

[@itisno1]

Tight I'm tryna convert my 24in trail bike

[@Cody196]

hey neptronix I am buying 26 9800mah 18650 batteries and i am wiring 13 in series for 54v and 13 in parallell for 128ah or some where around there do you know if that would work? i wanna try to go as cheap as i can but also will buy the motor kit for around $300 and the batteries are only like $50 or so but i will have to make the pack myself and do the wiring. is it possible and how far do you think i can go with 128ah?

[@neptronix]

+Cody196's Gaming Center There is no such thing as a 9800mah 18650. I hope you haven't made your purchase yet. That's a scam. The most dense 18650 currently has 3.4ah. If 9800mah 18650s did exist, you'd have a 6kw-hr pack... right now, the most capacity you could ever stuff into a bike triangle is around 2-2.5kw-hrs. I don't recommend doing things as cheaply as possible. Do your research and get involved in an electric bike building community. Watch what other people are doing. Don't make these people selling fake batteries etc richer, it only encourages them..

[@Cody196]

its from china and it was purchased yesterday shit, it was shipped already though. Word to the chinese, Bunch of cheap scamming bastards

[@gadnukbreakerofworlds436]

so how'd it go?

[@stevealdebaran626]

Did you have to change any hall sensor wires or phase wires to the infenion controller? Was it a plug n play?

[@neptronix]

It was straight plug and play on the infineon clones i own, which were purchased from kinaye motorsports and em3ev. em3ev may have changed their wiring these days though.. this motor comes with the usual cheapo china connectors, which a lot of vendors have abandoned in favor for nicer looking, but proprietary connectors. If i was buying a controller today, i'd probably go with a powervelocity controller ( look them up on endless-sphere; not sure if they have a web shop yet )

[@anunakizz]

You think that with a smaller wheel you get better torque ?, because that is my hypothesis, also tell me if it is more expensive an electric bicycle than a motorcycle scooter gasoline? Why do you buy electric bikes? Because the most expensive is the battery and this lithium battery lasts maximum 3 years with moderate use and less than 2 with a constant use.

[@neptronix]

Yes, using a smaller wheel and increasing the voltage is very much like increasing the RPM on a gas motor and then gearing it down. Except you don't have to redo the valves, cams, intake, exhaust, and deal with lower power at lower rpm. Just respoke the wheel and change the battery to a higher voltage. Gas bikes are cheaper but i'd never bother building one. I don't want the extra maintenance, smell, vibration, and low power. The torque band is awful and you have no ability to be stealth.. i would rather pedal everywhere without a motor before i put a gas motor on.. :P A correctly specced lithium battery will last a decade. Most people do not spec their batteries out correctly, even large companies. I still get good life out of a battery i built in 2010. If you know what you are doing, a lithium battery might be expensive but it also can live a long time.

[@javierchaparro4769]

@@neptronix 2 years later, but probably the best comment i ever seen

[@YeahTheOzzy]

+neptronix I just ordered this 48v 1500w leafbike kit and I was wondering if you know if it's compatible with the Cycle Analyst V3? If so what connections will I need? Any other advice will be greatly appreciated. Thank you. m.leafbike.com/mobile/products_detail.php?ProId=1068

[@neptronix]

Probably not. You'll want the standalone cycle analyst and solder up whatever connections you want.

[@lysolpanther1]

I noticed your display was reading 72 volts. I thought you had a 48 volt 1500 watt setup- Im confused as always.....

[@neptronix]

+lysolpanther1 I was running a 76v nominal battery for this run.

[@monsieur3d985]

Hi Neptronix. Thank you very much for your video and advices. Now the LEAF 5T is on ebike.ca simulator (effectively 7% slower than MXUS4503). But there something I don't understand : I only get 47.2 mph (with 76V / 26"/ MTP TUCK) while your counter shows 58 mph... Are you sure it was calibrated ? Did you tested your max speed with GPS ? If your speed is correct, that would involve that the simulator doesn't work well... What do you think about it ?

[@neptronix]

I have the default winding.. the 4T. Which is also the same reason you see much higher amp draw. :) The cycle analyst was calibrated and checked against a standalone unit, which is very well calibrated out the gate. Because i was skeptical the motor was efficient as it says it was on the dyno sheet. The dyno sheet didn't lie. This is the most efficient motor in it's size class.

[@monsieur3d985]

@@neptronix OK, I understand you have a 4T and not a 5T, so the max speed is higher. BUT when I test on the simulator an MXUS4503 with your parameters (76V 85A 26" MTB TUCK), I get only 52.6 mph, NOT 59 mph like you. Or you told your motor was 7% slower than the MXUS4503... So I dont understand what is wrong. Are you sure the MXUS4503 is the nearest equivalent of your LEAF4T ? On the other hand, I intend to by this LEAF 1500W : www.leafbike.com/products/e-bike-hub-motor/gearless-20-24-26-700c-28-29-inch/48v-1500w-rear-spoke-hub-motor-electric-bike-motor-spline-cassette-1110.html How can I know that's a 4T or 5T model ? There are curves but I don't see the relation between the tension and RPM. I need it for dimensioning the battery in order to get 50 mph in 5 seconds.

[@neptronix]

I ran a MXUS 4503 in this exact bike with the same controller settings. The 4T leaf is a bit faster per volt. Watch out for the casette version of the motor if you want to run high power. It has thinner axles and this will be a failure point. Big design mistake on leaf's part. Hitting 50mph in 5 seconds on this motor will require A LOT of power during acceleration. I would recommend the MXUS for this. You'll also want a bike with a long swingarm. Wheelies limited my rate of acceleration in this bike.

[@monsieur3d985]

@@neptronix Thank you for the information about the thinner axle for cassette version. So I will take the classical 600 RPM @ 48V www.leafbike.com/products/e-bike-hub-motor/gearless-20-24-26-700c-28-29-inch/newest-48v-1500w-rear-spoke-hub-motor-electric-bike-motor-998.html On the other hand, I confused km/h and mph. I intend to hit 50 km/h in 5 sec for a total weight of 125 kg. So I need 4 860 W on the wheel. So with a 90% yield, I need 5 400 W. Normally 72V @ 75 A would normally be ok. What do you think about ?

[@lawyerengineer]

@@monsieur3d985 ...try pedaling off the line...😂

[@d-dogjackson7933]

hey- If I throw the stock leaflike 1500w rear hub kit on a stock carbon mountain bike frame with NO torque arms. will it snap it? What about if I throw the leaf hub and a 80-100a controller?

[@neptronix]

..you're kidding right?

[@d-dogjackson7933]

haha. I mean wasn't sure a 1500w would crack it but your setup, I mean of course. I'm going to be safe and go ahead and splurge on some torque arms lol.

[@neptronix]

I wouldn't convert a carbon bike at all. They are not meant to handle those forces.. torque arms or not. Carbon bikes break under human power often enough. There's cheaper ways to die, trust me!

[@d-dogjackson7933]

I hear you, I've seen people put the mid drive motors on carbon bikes but not a lot of high power hub motors

[@kevinschminkey36]

I have the same 1500 w motor and my controller went out and had to buy another but need the controller settings....could you, by any chance, send my your settings?

[@neptronix]

I am sorry but i do not have my settings on file anymore, but they are relative to an 18FET 4110 infineon clone controller with a customized shunt resistance so they would not apply to your controller exactly. An infineon clone controller should match up color to color with the phase and hall wires. What you set for battery amps and phase amps is a matter of your personal taste. I was running around 70 or 80A battery here, and 2.5x that for phase amps.

[@robertbacke5015]

Hi-- neptronix-----I just ordered a leaf 1500 watt for myself to replace my generic 9c clone--I have a nice 48 v-20ah triangle battery -(38 Ah continuous)--- I ordered the 4t wind on a 26" rim--what do you think my top end will be---how about torque compared to my 9c clone ?? just wondering--can't wait until next week to get it---thanks--Rob

[@neptronix]

+Robert Backe I can't tell you anything without knowing the IR of your battery, the voltage of your battery, the amps your controller is set at, your wheel size etc. But this motor is easily capable of twice the continuous power as a 9C clone.

[@robertbacke5015]

Hi --I got my leaf 4t--tops out at 44mph @ 2400 watts---glad I read your reviews on this hub motor--I'm more than happy with it--thanks--probably upgrading to 3,000+ watts soon......just can't help it !!!!

[@sundvisson]

Hi, I am going to buy a bike and convert it to an e-bike. Here is the info of what I want and some questions I have about it. 29” wheels Rear hub motor 1000w (or more) single speed (just one cassette on the hub) is that possible to change yourself? Just remove and replace with a single Casette? High torch rather than speed , of possible? Where does it say about those numbers? Mtb or Downhill ? Second hand 500-1500 dollars Rim: XL if possible (I am 197cm tall) What are your guys thoughts? Any input is great so that I don't make silly mistakes:)

[@neptronix]

You got a lot of questions.. i would start reading the endless-sphere forum :)

[@sisterjames4110]

neptronix Could you use 2 wheels to go even FASTER Please respond

[@blacklight4460]

Yo Nep, I know you're doing vids on other subjects, but have you seen the new leaf hub motor? Wondering how it would run at 72v 45a. I recall you gave yours a lot of amps with great results.

[@neptronix]

Wow i missed this one.. I have not seen them produce anything really new.. tried to encourage them to improve their products further.. nope. Sadly still one of the best hub motors on the market today though.

[@Louis-lu5wh]

@@neptronix do you the voilamart kit on eBay is similar because I’m wondering what I could push through it?

[@hahajustfunny2945]

hello I have a motor on a fat ebike I want to put the same controller were can i get it or the lcd wath is it or something similar

[@neptronix]

The screen is a cycle analyst.

[@Carlit0Tit0]

That looks way dangerous to be going that fast on a bicycle. I wonder if it's possible to convert my already electric Stromer into this though xD

[@neptronix]

It is, and i only set the bike up to go this fast for a demonstration of what the motor was capable of. I usually ride at 30-40mph because handling gets squirrely on a light vehicle with this much power. I would sell the stromer and build something from scratch if i were you.

[@Carlit0Tit0]

neptronix​​​ No I mean I wonder if it's possible to replace the wheel and hub motor with this one and put it on the stromer frame. Because the stromer frame is heavier and sturdier and somehow figure out how to connect the better motor to the built in stromer battery within the frame.

[@neptronix]

That is a waste of a bike with a high resale value, in my opinion. And the battery on the stromer is not rated to output much higher power than the stromer motor. Your better bet is to sell it. For the cost of one new stromer, you could build 3-5 bikes identical to what i am riding.. and there is nothing particularly special about the stromer frame. I am peaking to 60mph on a $250 20 year old frame from eBay here..

[@jljebikesebikes7388]

Do you use the controller provided with the motor or did you have to change it.

[@neptronix]

See the video description.

[@sanesaint8725]

Fast enough I guess

[@markem2335]

pretty cool, but find a wind screen for your microphone.

[@neptronix]

+fred johnson I'm taking donations.. :)

[@Clearanceman2]

You have any trouble wearing out bearings and brakes prematurely? Just wondering since neither is designed for regular 50mph road use.

[@neptronix]

I usually ride this bike between 30-45mph.. the regen does most of the braking, and so i haven't needs to replace the front pads so far. The speed show in this video was just for demonstration purposes.

[@Clearanceman2]

Thanks, that makes sense!

[@standjel5469]

Jaky ma tento motor kroutící moment N.m ?

[@Trumppower]

Title is misleading it showed 5000 watt... That's triple the power.

[@neptronix]

Leafmotor '1500 watt' is the model name of the motor. I peaked at almost 6000 watts.

[@Trumppower]

neptronix lol.. way too confusing.But with 48V output is around 1500 watt ?

[@neptronix]

If you're only running 31.25 amps... but i'm feeding it a lot more power than that, and it's putting at least 70% of that to the ground due to efficiency loss from pushing it so hard. Normally you can expect it to be 88-90% efficient at stock power levels.. it's one of the most efficient hub motors on the market.. and capable of being pushed much further beyond it's rating :)

[@THEfromkentucky]

Watts = Volts x Amps. 48V x 20A = 960W 48V x 25A = 1200W 60V x 30A = 1800W 72V x 60A = 4320w You set the wattage and amperage with the Motor Controller and use a battery built for the voltage you want. More Amps = more Heat, which will melt components that can't handle it. More Volts = more "force" pushing the Amps through the circuitry, which can cause shorts and battery failures when limits are exceeded. He's running 85A @ 76V, which produces 6460W.

[@jcreedy20]

From what I understand of most high power hubs they tend to rate them at there continuous power handling. For example my cromotor is rated to continuously handle 3000w and that's what the manufacturer says it will handle safely continuously. You can run it all day on 3000w and it won't burn out or get hot. However you can push 14000w into it and accelerate hard on it up to say 60 mph but you will only be able to hold that speed for a very short period before you have to slow down to say 30mph or else the motor burns out. So his motor is probably rated to 1500w continuous usage but will handle lots more wattage for short periods, hence when he got to 60 mph ish it was heated after that short blast. These china ebike kits you buy that say 1500w are actually continuously rated to about 250 - 300 watts. Its the same as speakers RMS watts and Peak watts.

[@luckylou6614]

I have the 1500 w leaf , same as yours, same bike setup, running a 72 volt battery and a 72 volt controller. All I can get is 45 mph. Will a Sabvoton get me more? Better yet how to I get it so it is as fast as yours?

[@neptronix]

That's odd. Are you running 85 amps on a low resistance battery ( mine is rated to output 175A so 85A is no stretch ) like i am?

[@luckylou6614]

I HAVE NO IDEA. controller is rated 60 amps and LT lcd 3 has a top end limit of 72 km or 45mph. cant get around it. any suggestions?

[@neptronix]

Well i'm using a programmable controller here and a cycle analyst for a realtime display of the watts/amps/voltage/speed/etc.. With no display of that information and no ability to program what ya want.. i'd say that configuration you have is a dead end. >45mph is a bit much anyway.

[@luckylou6614]

I just found the controller you are using, purchased it with the CA thanks, 45mph too much? too slow! why would you suggest that?

[@user-cz4ci8bz5e]

классно! тоже такое мотор колесо хочу прикупить

[@dieglhix]

is this the best commuter vehicle ever? how much does the battery set cost? I found the kit except battery for $470 on aliexpress

[@neptronix]

+Diego V If you are serious about building one of these.. do mind that the stock controller is really a piece of crap and you are going to need a high discharge, high capacity battery, and a well-tuned 12-18fet controller that is programmable. I run a 15C 20AH 46V battery here and my range at 45mph is a meager 10-15 miles. If you don't understand what i mean, get acquainted with the endless sphere forum.. endless-sphere.com/forums/viewtopic.php?f=6&t=62939

[@dieglhix]

neptronix so the integrated controller wastes too much power ?

[@neptronix]

+Diego V Well, i'd imagine that it doesn't have the best FETs in it, so it probably wastes power. You also cannot program it. Which means you can't bump up the power beyond the wimpy stock level it comes programmed at. You also can't tune the battery amp to phase amp ratio, and you really want the ability to do that. It determines the torque curve of the motor.. You want to tune your torque curve so that the bike takes off like a rocket and just barely avoids power wheelie-ing. I would buy an infineon clone controller.

[@dieglhix]

neptronix haven't you installed one already?.. and what about if you use the motor on the front wheel? traction would be much lower? I wonder how dangerous is the silence itself, pedestrians getting on the way trusting just their ears...

[@stevey500]

Looks like Sandy Utah or American fork Maybe

[@blackbirdxx928]

lol i was thinking the same thing. Lived in Utard 25 years, worked at Bills Boneyard 8. Moved to lake havasu in 07. I spotted the mountains in the background right away. Another vid i was watching...guy ridding a bike, made a right turn...way off in the distance...is that? yep, that hill that runs along beck street.....the vid was way out on the west side...did they build more highway out there? Ya know ebikes are faster in utah than 500ft above sea level where i live....got that air density thing going on. Its the other way for street bikes, ny blackbird is 8 mph faster here

[@Wolfenion]

Can you kindly explain how your video title is listing this motor as 1500W, but on your watt meter it is exceeding 5000W? I'm confused..

[@neptronix]

Rc With Foxy It's rated for 1500W, but the controller is putting a peak of 6000W into it.

[@Wolfenion]

neptronix Thanks for the reply :) A motor that's rated at a certain Wattage will not take in more current because a higher current handling controller is being used. Therefor, a motor which is allegedly rated at 1500W will still operate at the rated power level, or less. The only thing that makes sense to me at this point, is that you are using a higher power controller on a motor which is rated at 1500W ONLY if a 1500W controller is used (power limiter at the same time). The motor in this case might be rated at "1500W" only to prevent it from overheating, but in reality it can take much more as long as it doesn't cook. A little strange in the electronics world.

[@neptronix]

Rc With Foxy The motor is conservatively rated for 1500W continuous, but by proper thermal measurements and looking at the formal dyno / efficiency graph for this motor, it's continuous rating is actually more along the lines of 2000W continuous. My controller, in this video, is programmed to pump 80 amps peak at 76 volts. The motor, being a very high speed winding, will use all that power and could even make use of more if it is available. I am close to the saturation point of this motor in the video, but not quite there. Proper wattage for a motor is entirely based on thermal factors. Motors are rated on continuous power based on maintaining a continuous thermal stasis. So, you can multiply that continuous thermal stasis wattage for quite a long time, but not forever. :)

[@Wolfenion]

Interesting. Thank you very much for taking your time to explain this in such detail. I am looking to make my first e-bike and am doing quite a bit of research at the moment. :)

[@monsieur3d985]

Hi Neptronix ! Thanks to your comments, I finally bought the 4T default windings with standard freewheel, indicated "731 RPM @48V", which is in really around "630 RPM @48V" (because there is an error on their website of LEAF). I finished to understand this by reading your interesting thread on on Endless Sphere endless-sphere.com/forums/viewtopic.php?f=30&t=66489 I'd like to say that Peter from LEAF is listening our needs.

[@neptronix]

Thanks for the note. Is the 630rpm figure a loaded figure? I forgot what RPM i measured on 49v. It's been quite a while since i built this. I sent some motor improvement suggestions to Peter a week ago and it sounded like he took me seriously. Will update the thread if he comes through. Seems like a pretty good and underrated company to me. Their direct drive motors are still my favorite.

[@monsieur3d985]

Hi @@neptronix You wrote "I measured my no load at 645rpm at 49 volts ( 13.16 kv )". I did not any measure until now. The error of RPM is still on their website (they give the RPM of the 1000 W motor instead the 1500 W).

[@rlewismail]

Thank you for your detailed information on this motor both on KZbin and the forums. I am very interested in this motor 6t but I am concerned that with a "normal" battery (52v 17ah 30a continuous). I will not see the torque efficiency that you are. I'm happy with 30-35 top speed and live in the foothills of NC. I am also curious about the Mac 6t. Given my 30 amp battery bottleneck does one look like a clear winner. Controller is 60a programmable and not willing to change battery.

[@neptronix]

Sorry for the late reply. A 6T winding leaf would be an amp sipper and require >72v to hit 40mph in a 26" wheel. A 6T winding MAC would be an amp chugger and probably do 40mph on your 52v but would likely require continuous amperage beyond what your battery pack is capable of. I mean, do the math.. 30a x 52v = 1560 continuous watts. About 1000W is needed to travel 30mph. A 10T MAC may be more suitable for your battery. This is why i use RC Lipo for stuff like this...

[@gabrielluizsalomao6441]

Hello mate, what is the range you get without pedal assist?

[@neptronix]

Depends a lot on the speed. If we use the industry standard measurement, my range is 121 miles while pedaling the bike at 20mph. You can adjust the simulation to suit your tastes here.. ( this simulator is very close to real world results ) www.ebikes.ca/tools/simulator.html?bopen=false&motor=Leaf%205T&batt=cust_60_0.02_20&frame=road&hp=100&axis=mph&blue=Lbs&cont=cust_80_180_0.03_V&throt=46&k=1

[@horror780]

I need one of those frame bags .

[@zoneprism7353]

pushing 5000w to a 1500w motor?

[@neptronix]

Yes. The beauty of electric motors is that you can overdrive them for a time. A more appropriate rating for the motor is close to 2000w. The factory underrated it.

[@motocross90]

Hi. Is there a 3000W o 5000W Kit? Or the Max is 1500W? Thanks.

[@5n4k3m3]

max is 8500w, i have that

[@neptronix]

Go on leafbike's page and see! I have a 1500w rated motor here.. it is vastly underrated..

[@madcroc23]

Can you please tell me what kit this is you are using? I'm very impressed with what you have done to your bike!

[@hhy2k]

That's 6Kw man....

[@a-aron2276]

6kw!! what controller are you using?

[@neptronix]

Infineon clone with 18FETs. Lyen.com still has them for sale. There are many better controllers out there, but these infineon clone type controllers are trusty and reliable units. I still use them.

[@ianmangham4570]

@@neptronix She's a BEAST

[@davidstorton910]

Brother I have 1500w mid drive and the fastest I've been on it is 35, It has plenty more(another 4 gears) but I don't

[@neptronix]

Yeah, this was just a test to try to see what the motor's absolute maximum was. Turns out i didn't even find the limit here.

[@infonator1]

What's the voltage?

[@Louis-lu5wh]

Description box 76

[@NapthecreeperrNTC]

Can you add pedal assist to one of these kits?

[@neptronix]

I wouldn't recommend pedal assist with this much power if you could.

[@NapthecreeperrNTC]

@@neptronix i understand but im trying to combine this 1500watt motor with a 72v 60 to 100 ah battery to get over 300km range with it just cruising at around 15 to 20 mph on it or 200km with cruise speeds and peak speeds even 100km would be satisfying and if I can achieve pedal assist with it then it could go way longer. My whole idea is to be able to start a summer day morning , travel some 15 20 km do whatever and then keep traveling all day to get an 8hr day with around 220km going all over my city as it is very very very bike friendly and you can essenitally go to cities 150km + away on a bike path, which is what my intentions are with such a huge battery and pedal assist plus i used to bike a lot 20km a day in my prime so i figured pedal assist and a 72v 100ah battery with a 1500 watt pas sensored motor with a 150-300 amp controller would do this for me. Please reply your opinion im trying to get ideas together for a bike. Also have you seen those custom torque arms on forums? Apparently theyre recomended for a strong motor as a avg bike /mtb's torque arms are not strong enough to withstand it. Please let me know on all this!!!! Thank you so much

[@neptronix]

@@NapthecreeperrNTC I'm noy sure where you're going to find a frame to host that big of a battery. 150 amps is also major overkill for this motor and if you only need to do 20mph, this motor is way larger than you need. Sounds like you've got a lot to learn. I reccomend checking out the endless sphere forum.

[@NapthecreeperrNTC]

@@neptronix so your saying i need a cromotor. Is that what your saying

[@neptronix]

@@NapthecreeperrNTC no, more like a bafang g310 or 27mm wide DD if you want good efficiency at those low speeds...

[@eastvalleycomputer]

fast

[@itstheoliver]

Hello. if i were to buy this kit but in 27.5 bike size it would come with a throttle and i would be able to use it like a motorcycle throttle? Also if i have disc brakes on my bike i have right now, I am still able to use the back brake as i would like i normally do. Here is the link. www.leafbike.com/products/diy-bike-conversion-kit/275-inch-electric-hub-motor-kit/275-inch-48v-1500w-rear-hub-motor-650b-bike-conversion-kit-1068.html Lastly, you got those speeds without pedaling? And here is the battery. www.leafbike.com/products/lithium-battery/48v-li-battery/48v-20ah-rack-lithium-ion-battery-958.html

[@Metal-Possum]

How long is that stem?!

[@neptronix]

Very! i'm running an extender, and usually run an extender on most of my bikes because i have a weird body type ( long limb, short torso ).

[@Volgeirea]

How are you controlling the speed?

[@Louis-lu5wh]

Throttle like a motorbike

[@Volgeirea]

@@Louis-lu5wh sweet this is just the information I needed in 2018 now that it’s 2021

[@Louis-lu5wh]

@@Volgeirea lol sorry