Razor E300 Gets a Big Motor Upgrade - Scooter Episode 5

Parts link in description if you want a MY1020 motor for yourself! Though this is brushed, and brushless is the future...
I finally get the scooter all laced up with its new 36V 500W motor. Does it all go to plan? No. Are we going to nail this? Yes. The speed will come. I guarantee it.
It just takes work - don't let yourself give up easy!
Parts List:
Razor E300 - ebay.to/2nklaOO
MY1020 Motor w/ESC - ebay.us/8iXomZ
Batteries - ebay.us/9FJOyz
BMS - ebay.us/ruUtdx
Dremel - ebay.us/jzd8zB
Cordless Drill - ebay.us/guPpJe
Chain - ebay.us/MhstkK
Sprocket Front - ebay.us/uST9db
Sprocket Rear - ebay.us/OCDQpK

[@jamesmonroe2808]

80 year old man going through his second childhood here. Haven't watched thousands of these how to KZbins, this is the best. Finally, someone leaves off the irritating music, used to study close up and steady video, shows logical steps of what didn't work and what to do to correct them. Kudos to you, Sir

[@WhatUpTKHere]

Sounds like you're having a blast! Glad you enjoyed it :D I do have some new work coming up that definitely has some irritating music in it, but hopefully you get a chuckle out of it all the same. Thanks for the kind words!

[@iankscorpio69]

You're chances of breaking a hip on one of these is pretty high.

[@thebrownamerican4408]

V ugh hg 7. you try 7 cu Gucci g7 ucg7 v h. G 7c 7 g7 g7 7u g7 g7 cg 7g7. ggv u

[@chrishayes5755]

saw an 80 year old man zipping around on a scooter a few days ago, that guy was loving life lol!

[@LRO1986]

@@iankscorpio69your

[@Psycandy]

busy modding stock e300. first to go were kickstand and brakes then moved the switch to the floor. No cables! Coupled the shunt in the controller and it cooks, unless the road is very slightly uphill. I'm gonna stick to 24V, the stock motor is very capable but the SLA batteries aren't up for much range. Still, its an EV

[@WhatUpTKHere]

True! Kickstand removal really is a game changer haha.

[@jatokilla]

I cringe every time I see you install the chain tensioner WRONG!!!

[@Inyauz]

jatokilla I was talking to the video saying the same thing! If the tensioner and chain were installed properly he wouldn’t of had issues with it being too tight or jumping off in that manner!

[@brandonborkowski8312]

@@Inyauz I'm cringing Too. Ahhh!!!!

[@1ring2rule3pigs]

WTF?? I clicked thinking it was Conan! damn thumbnail.

[@izzzzzz6]

Good idea to reduce the sprocket tooth count, you can get initial acceleration with the traditional scooter technique.

[@WhatUpTKHere]

Smart!

[@bryduhbikeguy]

Awesome build.Thanks for all the great tips and info. Justa FYI though..the Chain Tensioner should be under the chain towards the wheel as the torque from pulling the chain onto the motor automatically straightens it. Happy riding.Can't wait for vid #6

[@WhatUpTKHere]

Ahahah would you believe people still tell me this on a monthly basis lately!

[@Jack-fd8cx]

You're tensioner is on backwards, but overall great build love your videos!!!!

[@WhatUpTKHere]

Thanks! Yeah, definitely had that tensioner backwards, lol

[@kermiirani3809]

Good work mate! Can't wait till you get some other gears and a variable throttle.

[@WhatUpTKHere]

Me neither :D Thanks for watching!

[@EnvyPvpGaming]

@@WhatUpTKHere Aa

[@ashleyandrews47]

i wish i had someone who can mod my razor 300 for me because im afraid ill skrew up

[@WhatUpTKHere]

I was lucky that I wasn't afraid to mess up but it's tough when you're starting out and you don't wanna ruin your ride

[@Nolz10]

great info as i'm looking to do the same thing, only thing wrong is the chain tensioner should be tensioning the bottom portion of chain not the top as it takes care of slack in the chain, the chain between rear sprocket and motor will always be tight under throttle so just need to care of the slack after the motor

[@WhatUpTKHere]

Haha good point

[@nicholas.hassett9860]

my friendly neighbourhood machinest lives next door so im watrching all this with eyes wide open

[@glenmgreene1]

Got about 25mph from it til i broke both my arms.

[@WhatUpTKHere]

Oh no, ouch!

[@jimjordan9716]

Thank you for sharing the great video. Good stuff

[@jlrinc1420]

Have you had any problems with the motor getting clipped on bumpy roads? . One pothole and you and the motor could land 15 feet from the scooter. Not that it cant be avoided but miss just one hole and 30 km is no joke. You will fly over the handlebars and wreck your body and the scooter. That possibility would cause me to mount on top. As a general rule when you make something faster its a bad idea to make it more dangerous at the same time and that seems to be what you've done. I like the extra speed too but I've gone down at 5 mph and its no fun. That said I probably wouldnt listen to me either if I were you, Just something to think about and have fun!

[@WhatUpTKHere]

It scrapes a little sometimes. Generally though I ride on fairly flat surfaces because of this.

[@Louie9000]

Would it not have been cheaper just to buy a better scooter?

[@wc8582]

Probably. Lol

[@jonnyred89]

Don’t get me wrong. I love your videos and your effort. It’s helped me a lot.

[@stevemcgowan1237]

Controller Wires Interface Definition: Battery :Thick black (power negative) /Thick red (power positive) Motor :Thick yellow (motor negative) /Thick blue (motor positive) Ignition Switch :Thin red(VCC)/Thin blue Indicator : Thin red (Indicator power output) /thin black (indicator negative) Brake :thin yellow (brake signal)/thin black(negative power) Speed governor :Thin blue(speed handlebar signal input) /Thin black (negtive power) /thin red(5V positive power) Charge Port : Thin red (charge input power positive) /thin black (power negative) Brake Light: Thin red (power Positive) /thin black (power negative) Sport: Thin yellow /thin green(speed limit, connected the wires together

[@Rc-Adventurers]

I have an EZip/ Currie scooter. Don’t know how similar the motors but have you ever tried installing a motor freewheel sprocket? If so which one did you use?

[@WhatUpTKHere]

I have not tried such a thing; if you give it a go, be sure to let me know how it goes!

[@andyh4307]

You look like a young Conan O'Brian.

[@WhatUpTKHere]

Ha!

[@skyym3629]

I'm not sure where you live, but in the U.S. you can go to pretty much any of the auto stores around and rent any tool they sell for free. You pay a deposit of what the tool is worth and when your done using it, you return it and they give you the complete deposit back. They have those chain presses, sockets of any size and just about any tool you can imagine. Thanks for the videos and info I subscribed cuz you really impressed me with you skills. Thanks and God Bless

[@rockercater]

*WHY NOT *CHANGE THE TIRE VALVE* *IF YA AINT GOT THAT TOOL IT CAN BE A ISSUE* *CATER*

[@rockercater]

*Hey Fred,Ya Bill,We forgot to line the Valve up.Well darn it again,Drill a darn hole through it bill and we will make a extender and make more money.Uhhh,Ok* *CATER*

[@rockercater]

*But it still is a Hooky set up* *It looks like a child designed & built it*NO WONDER IT BROKE AND NEVER MADE IT A FULL MILE* *CATER*

[@WhatUpTKHere]

You are quite angry!

[@rockercater]

@@WhatUpTKHere *WHAT* *How is that Angry*?????IF U OWNED ONE U WOULD NO WHAT IM TALKING ABOUT*

[@cainetastic]

Thanks for sharing. I need your advice please. I own a Weped GT50 scooter. The battery output is only 14.7A max @ 60V for short periods, and only 9.8A continuously. The dual motors are rated for 1800 watts continuous each, which is pretty damn good. HOWEVER, watts = amps x volts. The battery can only deliver a peak output of 60 x 14.7 = 882 watts. That's only 25% of the power the motors require. I think the manufacturer is using 'saggy' cells for the batteries to keep production costs low. What if I upgrade the battery with better cells, controller and BMS to 3600 watts / 60 v = 60 amps? I think that's the output the battery should be able to deliver to take full advantage of the motors. Thoughts?

[@WhatUpTKHere]

Could be good! I’m not familiar enough with the scooter to know exactly what you’re dealing with, but if your battery is hitting its current limits and you’re getting weak performance, an upgrade could be worthwhile.

[@cainetastic]

@@WhatUpTKHere Awesome thanks

[@ebikerich]

Hey bro why not change the controller and throttle and then run that motor at 48V. Reckon that'd move! The motor's already got some decent vent holes in long as you keep an eye on the temp it should be good to slightly over volt!

[@WhatUpTKHere]

Not a bad idea! Could be a goer though I've somewhat lost my taste for overvolting motors after the smell from the last one ;) See what happens down the road...

[@DarrenGoodman]

I got a my1020 off Amazon and a variable throttle. I stuck with the #25 sprocket setup with a 13/52 gear ratio. The MY1020 came with a controller that combined with 4 12volt 10 amp hour SLA batteries spins the MY1020 at 3960 rpms (not sure the c-Rate). Top speed so far is 27 mph. Still going through versions. Fun stuff!!!! Thanks for your post.

[@tjacksondolph4026]

The motor hits the ground any bump with this mod, I did the same thing but 52v my1020 monster motor. It eventually bent the frame. You can take the tensioner off and just get the chain really tight, makes it much quieter/smoother.

[@WhatUpTKHere]

You're very much correct. Does make riding around the city a pain

[@poohbearvlogs6455]

When you stand on it . The chain gets tighter. Just check it.

[@Lowegy]

Nice job with the motor swap! U definitely need a variable speed throttle. Might as well get on with new 48v speed controller rated for 1000w. It will put out the amp needed to maximize power of the new motor. The original modified one is not going to put out the amperage even tho it's putting out the high voltage.

[@WhatUpTKHere]

Lowegy take a look at the easier mods and the latest episode as well ;D

[@Lowegy]

TK awesome! Just watched. Check this new video out. kzbin.info/www/bejne/gmqneYCdi9apjsU He overvolt the original motor with 48v speed control and throttle kit capable of delivering 1000w to the motor. He is getting about 27mph. Crazy fast. I wonder how long his motor will last before it burns out. At least you have new motor that can handle the amps. Love your videos and mods!

[@RimjobHimself]

Hey, an old guy came the other day and asked me if i was interested in an old electric scooter for free. I said of course yes, and it was looking like your scooter but yellow plastic instead of the blue. Same wheels. Looked inside and same setup as yours with 2 old 12v 12ah lead batteries i am trying to revive now. Anyway, i am tempted to get a new lithium battery and i am also curious how this scooter with same hardware would react if i installed a 36v battery instead? And i also actually have a 48v battery for my electric bike wich i have bought a 60v battery for instead. HOW and what do i need to do to have this on a 36v battery and also if i am gonna try a 48v battery wich i already own? Is there some stepdown stuff i can use? I am curious about 36v straight to this scooter plug straight in, im sure you have tried it huh? How did it perform? Any tips are great welcome. Of course the cheapest tips on 36g and especially on 48v as i have that already.

[@WhatUpTKHere]

Flick through my other scooter videos! You can hack the stock speed controller to run the stock motor on 36V, but it'll blow up eventually. I also explore alternatives. Good luck and happy hacking!

[@berkonal]

really good work . Do you also cover e-bike . I wish you cover some e-bikes.

[@SIMULATION621_]

Removing the fuse is a good way to lock your bike

[@WhatUpTKHere]

Exactly!

[@thepubliceye]

FYI the slack adjuster on a chain should be on the slack side of the chain, tht is the side opposite the pulling/load side.

[@WhatUpTKHere]

Yeah, I get people telling me this every few weeks. I shall never forget now haha!

[@Chris-bn1bn]

Really, you didn't think of using a longer bolt with spacers to offset the angle. 5 seconds, it took me.

[@WhatUpTKHere]

Offset the angle? Hm?

[@davek2690]

I'm just going to handle that the best way i know how, a hammer

[@WhatUpTKHere]

*bang bang*

[@68pishta68]

Why is the tensioner on the drive side of the chain and not the slack side? I have a 500W 4800 RPM 24V motor out of a electric lawn mower,,,too bad is 10" long. Maybe I can route the brake cable under the motor

[@WhatUpTKHere]

That sounds like a sweet motor! Give it a go!

[@richierich.1982]

100A fuse jeez. Input current to controller only several amps, whole point of Mosfets. Electrical theory all wrong fella

[@WhatUpTKHere]

I'm sorry, what? I'd love to know what you're getting at but I'm not following. If you watch the video, the fuse isn't there to be a fuse. It's there as an easy-to-pull safety disconnect, hence the pullcord.

[@nilankasilva2283]

Like your video I’m waking in dubai I need your hellp if you can I need E300 control module my one 1000uf 35v cap blast can you help me please

[@WhatUpTKHere]

Have a look on eBay, set to worldwide!

[@robertclark2714]

I have been working on hooking a scooter to a wheelchair. I have to go about 300 feet from the house to the chicken coop twice a day. My issue is not speed but I have to go up a steep hill on my return and I am not a small person. I have two worn out E150s. I have thought about putting the the two scooters together with only one front wheel. I would love a high wattage motor but $$$$

[@WhatUpTKHere]

Sounds like a useful tool you're building!

[@DennisHicks78749]

Dude, the chain break tool can also drive the pin back in when you want to reunite the chain ends! No need to hammer. (Makes sense, cuz you don’t see many cyclists with a big ole claw hammer hanging out of the pocket of their slick lycra team jersey!

[@DennisHicks78749]

Whoah. Don’t mean to sound critical becuz this is a freakin awesome project you are doing and so fun to watch! Just a little tip about the chain from a cyclist.

[@DennisHicks78749]

Whoah. Don’t mean to sound critical becuz this is a freakin awesome project you are doing and so fun to watch! Just a little tip about the chain from a cyclist.

[@Fastaschit]

Tensioner cannot be top mounted or should I say the upper half of the chain, period. The chain tightens on its own on the top half..the slack part of the chain will be the bottom. The natural slack side of the chain is where tensioners go. To show you, put the rear on a block so wheel can spin freely, hit the throttle and she that the top of the chain is pulling tight and all the loose chain is on the bottom. The bottom is the only place a tensioner can go or you will have nothing but problems. That's on any chain driven vehicle or device. Tensioners can only go where the slack part of a chain or belt drive. It will always be the side where the driver motor is returning the chain to the wheel. If you ran your scooter in reverse well then mount it on the top.

[@WhatUpTKHere]

Yup, got it backwards haha

[@amazeme4503]

Would it be a good idea to run dual speed controlers if lm wanting to go faster an my moter's could handle the voltes.or why have speed controler does it really help if l don't use brakes any hew.pl help

[@WhatUpTKHere]

Speed controller is great, it helps you rode slow where necessary :)

[@chiefengineer5652]

he has fucked the rigidity of the frame by flattening it with a hammer, if it doesn't fold and bend when you first stand on it, it will when you go over the first bump...

[@WhatUpTKHere]

There's actually plenty of rigidity left. Yes, it's compromised somewhat, but it's held up fine all year.

[@tylersantiago3810]

Bro if they’re tying up a string to one of the fucking fuses to yank it out CANNOT be safe😂😂🤣🤣☠️

[@WhatUpTKHere]

Thankfully never had to use it ;D

[@LiviuDragon]

This is the crappyest scooter comparing to the scooter i will buy

[@WhatUpTKHere]

Proud of you!

[@Abdul_-ct6pn]

Love your videos, I have a question if you had to choose, would you choose an upgrade motor (350w motor) or an upgraded sprocket

[@WhatUpTKHere]

Upgraded motor first! Sprocket can only change the torque/speed trade off, can’t give you more base level performance

[@WhatUpTKHere]

I changed the sprocket because I had way too much torque but not enough speed

[@Abdul_-ct6pn]

What Up TK Here That’s good to know I’m new to modding and finding ways to improve my scooter and it’s always good to have videos like these that give good explanations and in-depth detail about the item

[@anthonyarredondo6433]

Noo, I'm not one to reinvent the wheel

[@efoxxi]

Why don't you put motor wheel on it? ;) motorboard.ru/forum/index.php?showtopic=1372

[@WhatUpTKHere]

That's a really cool solution! I can't read Russian - where did they get that wheel?

[@zrix9053]

How many miles would you get out of this setup

[@WhatUpTKHere]

3-8? Depends on battery!

[@dawnofthetowels2265]

can you repost the motor and two sprockets again the link is broken for me.

[@WhatUpTKHere]

Done on a bun!

[@LiviuDragon]

install a disc brake that will be good

[@WhatUpTKHere]

I do have some parts...

[@LiviuDragon]

@@WhatUpTKHere subscribe to my channel

[@MichaelKHobbs]

You know I've done the exact same thing Razor scooters are my thing. What I do is in emanate the back brake it's a drum brake and just get yourself a front disc brake that'll do the job it'll stop you because it works just like a car all the momentum has shifted up forward as long as you don't squeeze too hard on the handle you won't flip over but you'll get used to that I'm never flipped over on accident LOL the typically you can get that same motor the 800 or the thousand watt brushed motor in there also if you beef up the tail with double strapping of that metal Alexis to a welder weld it on or if you don't have access to a welder you can add screw holes and get a quarter 20 tap and die and add some short quarter inch bolts with nuts on the end with an extension plate on the back so that the motor can fit on there you're going to have to make a little teal peace like a drag car and a small wheel so you don't flip over when you take off.lose 800 watt motors can handle a lot of power I run him straight through sometimes without a controller I run with the scooter as fast as I can jump on it and flip the on switch using double-dip number 10 wire and a hundred amp breaker no problem wears out your batteries faster but eight if you want to go for speed there's your things to do it's good for the quarter Sprint LOL good luck Mike

[@ambroseabellair5306]

Why not just put it back where it was originally and modify the cover. Your exposing the motor any way, so not just cut out the cover where the shield went over the motor in the rear. Then at least you don't have to worry about getting all sorts of trash on the sprocket and damaging the motor from ground debris. Secondly and most importantly, what idiot goes 50 miles an hour standing up on a little scooter with no protection, hit the first pot hole and your toast, on the bright side you don't have to worry about any brain damage, cause anyone who would do that in the first place, is already brain dead. Have fun but be smart and stay SAFE, remember there are younger kids watching what your doing.

[@olivervale3614]

Real car motor real car battery Or is that literally a car

[@WhatUpTKHere]

Nah, these are all parts off eBay. Nothing to do with cars.

[@petrifiedhero9610]

Want to race? Gotta install same motor on mine soon lol

[@WhatUpTKHere]

Ahaha mine is in bits right now! Update soon

[@dannydietz2435]

Can you give me a list off all the parts you got for this project please? I plan on doing this with my scooter. Thanks

[@amk1108]

ive bin searching around for someone with a similar problem. I think i messed the motor up this one time and it became like extremely hot along with the speed control. now, the motor doesn't supply enough and the speed control tries to fight the motors inner resistance and just gets extremely hot. However, when fully charged, my electric bike works perectly but after after a few miles, the voltage plummets and the motor goes very slow. does this sound like your problem? please reply. thanks

[@BuildProne]

I hate to tell ya you put the chain on the tensioner wrong like really wrong.

[@WhatUpTKHere]

Yeah it happens

[@stevemcgowan1237]

Hi Tk just bought banggood 36v controller an throttle for my e300but having trouble connecting ignition lock wire red/blue thin wire and throttle 3 wires it’s variable with led display I think the razor power switch will be bypassed but as the new lock ignition are thin wires where will they connect to ? I’m ok with the main battery an motor wires as have 3 lead acid in series .will be using 18650 kit soon 😬 thanks from steve in chester .great videos of yours zany like me 😀

[@nickdarling5557]

Well, My 500W motor is installed. Not as smooth as your operation. I ground a bit off the motor in the hope i would not have to hammer the frame much. It still required a few wacks. I used an anvil but still managed to totally warp the frame. Anyone attempting this take care because it has taken hours to get rite. I'm having a break, :)

[@WhatUpTKHere]

Ahaha, it's a big job. Hope it's going well for ya!

[@nickdarling5557]

@@WhatUpTKHere Yer it's taking shape thanks mate. Not looking forward to the brakes. Also the 36v 1000w controller i bought, does not really have the beans. The hacked standard one felt like it had more power. There is no shunt in it though, possibly a resistor instead? i think i need to replace it or either add fets like you did. Thanks Dood.

[@michaelanderson9792]

I would go more teeth sprocket for better hill climbing

[@WhatUpTKHere]

Smart! I'm a speedy Boi

[@tonymunn]

You probably figured out by now that the tensioner goes to the bottom of the non drive side of the chain pushing it up and keeping the slack out of the drive side???

[@SamusWorth]

YESS!!!! fianlly xD

[@WhatUpTKHere]

Ahahah, glad to be of service!

[@LiviuDragon]

try zero scooters has disc brackes lights suspensions and a hub motor not chain

[@WhatUpTKHere]

They sound cool!

[@LiviuDragon]

@@WhatUpTKHere you dont need to modify them like razor

[@martinbarnes6853]

The tensioner goes under the slack side of the chain, not under the tension, or top side. So, looking at the scooter from the right side, the tensioner should be under the lower section of the chain, as the top is under tension to drive the scooter forward.

[@WhatUpTKHere]

You know I get more comments on this than any other XD

[@martinbarnes6853]

@@WhatUpTKHere Seriously, it goes under the bottom of the chain, also has better tension, and the freewheeling clutch allows for proper chain tension. I have 2 of these, one E325 and an E300 with an 80 tooth rear sprocket for more torque, less speed. I use the 300 as a scooter around downtown of the city I work in as I can't walk far due to over a dozen surgeries on my legs to keep me together. I choose the Razors for easy parts availability and the balloon style air filled tires for a smoother ride. My next project is going to be taking the older models I use and upgrading to lithium ion batteries when my lead cells give out. I only go a mile or two a week, so it is light use, a few blocks here and there.

[@Jab_2023]

my son bike has the my1016-hd 24v 250watt motor. can this motor handle 36v? I havent taken it apart but its an old bike from k-mart

[@WhatUpTKHere]

Hard to say! Could give it a go, but you might ruin the motor in the process.

[@Jab_2023]

@@WhatUpTKHere Thanks a alot. Guess i'll keep it at 24v and gear it up..its on a 9t and 55t gear

[@SALMANDER33]

28t rear sprocket would get you nice top end

[@WhatUpTKHere]

Good call

[@hdm6897]

So interesting I subscribed lol .I too love escooters.

[@WhatUpTKHere]

They're fun!

[@MrThomasrider]

Can you do an Idiot guide for brake handle assembly please pal...

[@SnookieTyron]

My 300 scooter won't work how can I test motor to check

[@WhatUpTKHere]

Hm! Try finding a local makerspace that could help!

[@CelebrityCyborg]

Thx for posting this Razor Scooter project. I have a used Scooter and suffering expenditures for upgrading it. It will not pull me up a hill effectively. Nice job! Lots of info. Happy Holidays from the World's First US Military Cybernetic Host in history. 🎄🎄🎄🤖🌐🇺🇸

[@wilbersonaltidor7798]

So does it mean you’re a hacker?! 🤣🤣🧿

[@WhatUpTKHere]

Perhaps! Thanks for watching!

[@malomalito6048]

Your chain stabilizador is over it needs to be under

[@WhatUpTKHere]

Good call, I did assemble it wrong

[@pancudowny]

Is there a listed for the sprockets that ships to the United States? Because the one for the wheel sprocket don't/won't.

[@WhatUpTKHere]

Hm, try searching eBay and alibaba

[@WhatUpTKHere]

Or make your own! I have a video on that too :)

[@edwinarcenal5770]

24v motor 48v battery 48v 2000w motor controler

[@WhatUpTKHere]

Good recipe

[@jeremyoshea7941]

Your tensioner is on the wrong side of chain

[@WhatUpTKHere]

Very true!

[@glenmgreene1]

Also managed to get a disc brake fitted to it too

[@WhatUpTKHere]

Did you like the disc brake? I honestly thought it was the best upgrade I did to the whole scooter, hahaha

[@donaldlee9376]

How to make my mx650 bike go forward

[@WhatUpTKHere]

Might need a repair

[@garyjones122]

Good effort but my god you need to watch your fingers with that grinder.

[@Simplix01]

TK just brought an E225 and I really want to boast it to at least 20mph, any ideas?

[@glenmgreene1]

I done this to a e300 but i used a 1400w motor and some 18v batteries, it was a HELL MACHINE!!!!!!

[@WhatUpTKHere]

Very fun!

[@nicholas.hassett9860]

HAHAHAHA classic fkn heat shrinks

[@WhatUpTKHere]

Ahahah you know it

[@tealover01]

About 4 years ago I bought this cheap little folding scooter bike it was 24v chain drive with a plastic cover over the controller and batteries that served as a foot rest, it came with a little basket, turn indicators, headlight, taillight, brake light it was basically an ebike without the pedals. When I got it the delivery guy dropped it on the back wheel I rode it twice and I was able to hit 35 kph then I ordered a e300 back wheel which was about the same size but I forgot to change the sprocket and as a result I was able to hit around 45 kph.. it was pretty much a 200 dollar disposable jobby but it was fun before I sold it for double!

[@WhatUpTKHere]

Sounds fast as all get out!

[@iankscorpio69]

Thought it wouldn't be slow.

[@WhatUpTKHere]

Haha, me too. Don't worry, we correct this in later episodes

[@dhenschel4]

It's probably been said - but you basically shortened the chain so far that the chain tensioner does not function. You likely did that because you have the tensioner on the taught part of the chain (the part pulling on the sprocket of the wheel or top part of the chain) when it needs to be on the slack part of the chain (the portion returning from the motor to the wheel or bottom part of the chain). Correct that, straighten the motor, and I think it should be fixed.

[@WhatUpTKHere]

Yeah I get comments about this every week, have done for the last five years haha! One small mistake...

[@jaaasgoed]

What you need is a new speed controller. These controllers are current limited, meaning they will only supply a fixed amount of maximum current (and therefor power) to the motor. You can add a 1000W motor, but as long as you keep powering it from the old speed controller, it will not make much of a difference.

[@WhatUpTKHere]

If you watch the full series, you see I fully explore disabling the current and voltage limits on these controllers. The controller is a key piece of the puzzle.

[@kckc4258]

I just ordered one of these 24 volt 500 watt motor for my diy electric bike. The motor can barely move the bicycle itself, very low torque. I even bypassed the electronic speed controller and no torque increase.

[@WhatUpTKHere]

That’s disappointing, perhaps something is wrong? 500 W is a good amount of power, perhaps you need different gearing...

[@shmaxo]

I cringed when I saw you whacking your adjustable wrench with a hammer! Get a short section of pipe that will fit over the wrench handle to increase the leverage/torque, and you're far less likely to damage the wrench and yourself.

[@WhatUpTKHere]

Yeah I do go pretty ham on the tools sometimes. Since then I’ve started to invest in better gear, thankfully

[@Abdul_-ct6pn]

Sorry for asking a lot of questions but, I recently replaced my 2 12v 7ah lead acid batteries with 2 12v 9ah lead acids, only problem is after an hour or two of charge, the charger would show that the battery is full but on full throttle it would last less than a mile

[@WhatUpTKHere]

Sound like dud batteries

[@djashyknuckls]

Your chain tension is not on right

[@WhatUpTKHere]

Haha, yeah. I still get told about that every few days

[@whyyousmilingwhenyournexth4047]

Should have just put on a front break

[@wulfclaw4921]

Oh sh!z ! So the motor fried on that last deal. Well, that sucks..it looked like it hauled ass too ! Well, let's see how this job goes ! On the motor mount issue- Could you go with a pair of "U" bolts and a pair of plates welded to the frame to hook them to ? >>>-Wulf-->

[@WhatUpTKHere]

That would also be a good solution! More upgrades to come, too :)

[@MrTurdfergusen]

You made almost no difference in gearing with the sprocket change, the tooth number changes with pitch, your stock 56 tooth #25 chain sprocket had a diameter of 113 mm and your 44 tooth T8F chain sprocket has a diameter of 110 mm. Apply the same principal to V-belt Pulleys, its really the overall diameter that matters.

[@WhatUpTKHere]

MrTurdfergusen yeah, plus the person who sold the motor lied, it came with a 9T cog. episode 6 goes into this more, as does the Hackaday.io page. :D

[@giovannisocci8793]

My kid has an E300 and I thought about modifying the scooter to increase it s speed or buying him a moped,moped it is. This is just too much work.

[@WhatUpTKHere]

Giovanni Socci yeah, performance at this level can be hard. I'm looking at doing a simpler high-performance build soon.

[@CuriousEarthMan]

loved the video! so the stock throttle is not variable speed? seems odd to me, but I'm new at these! Instead of the fuse, maybe find a switch (I've seen them) then fuse holder isn't open to the weather that way, and you can push in to stop, and mount it up the riser the holds the handle bars maybe, or hit it with your knee for fast power cut. thanks for posting! on to pt 6 now :)

[@WhatUpTKHere]

Yeah, stock throttle is just a switch! Bit scary at higher power levels. ;) Good call on the switch, that's what I did on an old pre-KZbin build. Video to come on that soon! Thanks for watching :D

[@BigAlWillis]

my nephew has an e300 I'm looking to get it going. I tested batteries they're good. I found he had been riding it with the rear brake on/locked up the whole time so I free'd the brake & the wheel spins but once someones on it , it will not pull weight. I'm guessing the motor got too hot being it is getting power but not strong. do you think this is the issue? thx

[@WhatUpTKHere]

Could be dead batteries that, while they show voltage, can’t deliver the current. Measure the voltage under load and see what’s going on. The brakes are terrible stock, you might like my latest video which shows how to do a disc brake upgrade :)

[@Abdul_-ct6pn]

What’s up TK here, is there a big difference between a 300 w motor and 350 w motor

[@WhatUpTKHere]

Nope, not a big difference if that’s the only thing! ~ 17% more power

[@Thecamp12345]

Hey i put a 36v 500watt 2700 rpm motor on mine how fast will it go i got the sprocket upgrade to

[@WhatUpTKHere]

Should be a fair bit quicker, test it and find out!

[@moheezali2222]

Hi I am doing this same project, could you please give me a link to which chain splitter you used for the 25h chain Many thanks

[@WhatUpTKHere]

Shakeel Hussain eBay "chain tool" or "chain splitter" :P

[@takster050974]

Haha I love the videos. You are presenting it really funny. And I do learn for diy at home. Thanks dude.

[@WhatUpTKHere]

Thanks for watching!

[@markbiacsi4313]

Hi love the channel. I've just upgraded my motor and controller speed box and variable throttle on my razor e300. Its a 500w motor and batteries were also upgraded to 9ah from 7ah the problem I have is the scooter keeps cutting out after about a minute. The scooter has the original reset button in. The motor has a current load of 26.6 amp do you have any ideas. Thanks in advance

[@WhatUpTKHere]

Reset button shouldn’t be wired up to your new controller. Sounds like something wrong with the controller or batteries if it’s cutting out after a minute

[@timothycervantesyowell6262]

The control module probably isn't sending enough juice to the motor . I would look into it

[@WhatUpTKHere]

Yeah, something I had to investigate in later episodes!