Building a Sleeper 72v Razor Scooter (8x Power)

[@Calthecool]

Cost Breakdown: Scooter - $50 Motor - $110 TF8 sprocket and chain - $22 Throttle - $13 Three Speed Switch - $9 Controller - $85 Cells - $70 BMS - $20 Other Battery Stuff - $25 Total: $404 (A new E300 scooter is $324, so that's kinda crazy.)

[@bradthebiker]

What voltage was the motor? And what was the voltage on your battery? I want to mod mine like this 👍🏻👍🏻

[@Calthecool]

@@bradthebiker both 72v

[@bradthebiker]

@@Calthecool im asuming 72v controller aswell, i take it your not over volting the brushless motor, looks wicked fast and lots of tourq i want to build one to this kinda spec but is gunna cost about 6-700 in uk to do, (i need to learn how to build battery’s to save money)

[@Calthecool]

@@bradthebiker I am technically over-volting the motor since it’s only rated for 36v 1000w, but it doesn’t really matter. The limiting factor is the heat and the RPM that makes the rotor fling apart, and I’m probably nowhere near that speed yet. You could probably run this motor at 3000w 96v as long as you don’t overheat it.

[@bradthebiker]

@@Calthecool im doing a small build to start with on mine, 24v 350w motor with a 36v 500w controller, ill just have to be careful not to burn out the motor to quick 😂 then who know maybe weld a big boy motor on

[@Iangaming4396]

Keep posting bro you're gonna be big

[@samuel123478]

My neighbor found an E300S at the dump and brought it to me because it looked totally fine. Ordered a charger for it. Had to replace the batteries with some lithium ones with the same output and anyway that thing will go 11 miles on flat ground at 14mph. I zoom around on it at track days and stuff. Your battery mod is insane! I wish mine went that fast. The weight joke was 10/10

[@Calthecool]

I didn't really mean it as a joke, but I guess it is kinda funny seeing the weight on there.

[@ezmatt]

@@Calthecool "I could immediately tell the wait difference" you said whilst panning to a weight on top of the scooter pretty good unintentional joke

[@gradyvogel9043]

Lol that's exactly what happened to me

[@DeanKalsevicius-sf8gl]

Really cool video. Iv had one of these for a while and I will eventually get all the parts and hopefully have a cool scooter. Lots of good information and knowledge you have. Thanks for the cool vid 👍

[@Justaregularguy46]

Man keep up the great work, and stay motivated. You make banger videos, and just makes my day better everytime i watch them❤

[@haywirerc]

Another nice build! Keep thinking and surviving whatever you dare to ride😂

[@henryg9216]

nice build! seeing this video inspired me to build my own 2000w upgraded E300

[@Calthecool]

Do it dude it's fun.

[@Kyle-wo4vd]

Awesome build! I've been shopping at Battery hookup as well.

[@Calthecool]

@@Kyle-wo4vd yeah they got some good deals on there. For my next build I’m thinking about getting the BMS that can burst 200A and the 3Ah 35A discharge 21700 cells and building a 72v 200A discharge 18Ah battery for $350. Literally impossible anywhere else.

[@navusernamebleg]

Great vid, i'd love to see you make a really powerfull front wheel motor scooter, so u dont get that crazy kickback 👍

[@Calthecool]

@@navusernamebleg the motor would just spin a lot and probably be more dangerous than a rear wheel motor scooter. I might make a two wheel drive scooter though, as someone near me is selling their crashed scooter for cheap.

[@ovxrtex]

If you could do this type of build but with a bike, that would be awesome! I love the videos, keep up the great work! P.S. yes I know about the old bike video you did, the difference with this one that I'm talking about is that it's on a budget.

[@Calthecool]

@@ovxrtex The problem with budget builds of anything electric is the battery. You can either build it yourself to save money, or buy a cheap battery. If you build the battery wrong or buy an unsafe battery they will both explode, so I really don’t recommend people doing either of those (unless you have years of electronics experience) So if you keep that in mind, the cheapest you could convert an existing bike to a 1000w ebike would be around $350 ($150 motor kit, $200 battery) However I wouldn’t consider that a fast ebike, to get a fast one that’s 3000w it would be around $950 ($450 motor kit, $500 battery) So this scooter being $400 is really a special situation from me building the battery and buying the scooter for $50.

[@ovxrtex]

​@@Calthecoolcould you do a battery video? or do you think I should take an actual class on electronics if I want to learn more?

[@Calthecool]

@@ovxrtex there’s really no need to take classes anymore unless you are getting a degree/certificate, there are a bunch of KZbin videos that show how to do it. I’ll probably do a battery video next time I build a battery, but I have no idea when that will be.

[@iksay9646]

good job bro, sub gained !

[@yusuke_rides12]

wheelies in crocs g

[@Aidenlovsskyy]

Love the video keep it up

[@STANI420]

Awesome!!!

[@Aidenlovsskyy]

You should build a super 73 style e bike those are super cool in my opinion

[@Calthecool]

@@Aidenlovsskyy I plan to, should be 7000w and cost about $1800.

[@xKimiii]

Thatss an amazing build!! i just wanted to ask, about how long does the battery last?

[@Calthecool]

The battery is about 4x the capacity of the stock one, so it would last 4x as long if you were riding the same speed. Of course this one goes way faster than a stock scooter, so it won’t last that long normally. I’ve never even used the full battery on one ride, it would easily last over an hour riding like I was in this video.

[@xKimiii]

@@Calthecool okay thanks !!

[@matthewnorman9803]

Have you ever thought of building a hybrid bike

[@Calthecool]

@@matthewnorman9803 yes, but I’ve built three motorized bikes in the past and the engines just aren’t that high quality and having to mix the gas and bump start them is annoying. I do think that if I could find a good frame and I could somehow have the hub motor in the rear wheel and have the chain drive from the engine it would be a interesting build but it would take a while and I don’t really want to mess with all that right now.

[@dendys04]

i think u can put some handlebars from freestyle scooter they are much taller and wider

[@Calthecool]

@@dendys04 the handlebars are welded on, I was thinking about cutting and extending them higher but it’s not a big issue.

[@Jabba-b7i]

Possible to just use a big rc brushless motor?

[@Calthecool]

@@Jabba-b7i yes you could, but those are pretty expensive. This motor would probably be the best one for a build like this.

[@oswaldosanchez5256]

Love the vids, I like the narration, just add a little more enthusiasm bud!

[@mviivs]

Hey man, how much would it cost to make a 72v battery or a 84v battery? would I be able to reuse my old battery packs? I have a 52v 30ah battery and a 48v 20ah battery.

[@Calthecool]

@@mviivs assuming the batteries aren’t that old and worn out, your first step would be to take them apart and salvage the cells. Just make sure to not pull the nickel off of the negative end of the cells, because it can pull a hole in the cell and make it unusable. Also don’t grind the ends of the cells, because the cells are steel with a thin layer of nickel on the outside, and if you remove the nickel it will be impossible to spot weld to. After that you can arrange the cells in a 20 series configuration and find out how many you can use in each parallel group. Look up the cell, and see what the max discharge current is. Multiply that number by the number of cells in parallel, then buy a BMS that’s equal to or less than that amount of current. Also buy a spot welder, some wire, some nickel strip, shrink wrap, and some cell spacers. Then you can assemble it like I did in the video, or look at other videos on how to assemble batteries. I’m probably going to make a how-to video eventually, but it might be a while.

[@justaskelly]

Cool

[@mrWantsMx650Parts]

Yo do you have any other e300s or any broken e-scooters so I can start my own project because I can’t find any

[@Calthecool]

@@mrWantsMx650Parts yeah I have one but I doubt you live near me. I’m in eastern KS.

[@mrWantsMx650Parts]

@@Calthecool I live in Perth so yeah 😬

[@astr0yt344]

@@mrWantsMx650PartsI’m in Melbourne but razors are soo impossible to find but I do have a mx350 that I got for free

[@JermJerm-lz6lg]

Could you make me a 72v 20ah battery? it would probably need 80a discharge.

[@Calthecool]

I definitely could, where are you located?

[@JermJerm-lz6lg]

@@Calthecool Atlanta

[@Calthecool]

@@JermJerm-lz6lg There's probably a battery builder in Atlanta that can make you one, it really only makes since for me to make one if you are local.

[@JermJerm-lz6lg]

@@Calthecool I just thought you really knew what you were doing that’s all…

[@Calthecool]

@@JermJerm-lz6lg I’m still learning, plus I’m super busy right now.

[@madvaes6526]

get a wheelie bar

[@teddy_123.]

Yooooo

[@Zzachmatt]

you should send me one of your projects

[@Calthecool]

@@Zzachmatt I will if you send me money first.

[@oswaldosanchez5256]

Love the vids, I like the narration, just add a little more enthusiasm bud!