Razor E300 Gets a Big Motor Upgrade - Scooter Episode 5 

80 year old man going through his second childhood here. Haven't watched thousands of these how to RU-vids, 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

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.

Thank you for sharing the great video. Good stuff

TK, really am enjoying these videos on the E300 scooter. Just want to say Thank you for taking the time to make them. I have an E300 scooter, going to attempt to do some of these upgrades you have shared. Thanks again. V/r JR.

Another great Episode! Enjoyed! Well done TK!

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

Great job, I love motorized foot scooters! I'm definitely going to check out your other videos.

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

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

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. 🎄🎄🎄🤖🌐🇺🇸

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

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

TK Glad to see you back on the scooter again

OMG when you said the heat shrink part and perfect solder... I felt that

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

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

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

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 😀

What sprocket did you end up putting on the motor?

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.

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

TK how do you modify the E225

Where did you get your motor

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

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

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

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

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?

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

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.

Thanks TK!!!!I upgraded my e325 Razor to the same 500 watt motor,Variable Speed Controllers,36v upgrade kit.I run 15T/38T T8F gears...29mph!!! Thanks Dude! I luv my razor now!

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

hi, what sort of batteries are those? are the lithium? thanks.

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

Sir I have a question so I'm trying to put 24v 350w motor in my razor e300s do i need to change the speed controller. Please help

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

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!

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

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

So how many watts is the new motor you put on .?

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?

Hi there question did you increase the range or just the speed, I've got a e300 ,I want to double its range and run time at least,how would I go about doing that ?

Please send me a link from where to buy that rear sprocket, thanks

Also managed to get a disc brake fitted to it too

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

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!

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 :)

awesome nice work

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

So interesting I subscribed lol .I too love escooters.

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!

3:41. Actuating the brake, not activating it. It was already activated (operative).

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

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

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

What kind of chain do you use. What size?

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

Nice video mate learned a lots.can you tell me where you got the chain and sprocket? It's all I am missing to start my project ?

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

Worries so much about safety throughout the whole video to then proceed in testing it without a helmet. Good job.

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

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.

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

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

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 $$$$

I'm having a clunk noise coming from my 500 w motor when I go from slow to faster on my scooter, any help on this??????? seem I turn to go faster and it starts.

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.

what's the rpm per volt of each of the motor. The new motor probably doesn't rev as high but has more torque. get a smaller sprocket to increase top end. It may heat up the controller more.

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???

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

Tubeless tyres?

Hey tk, is there any more scooter videos coming?

Would it be possible to put a potentiometer on the wires connecting the motor to the speed controller to limit the current going through to control the speed?

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!

watching you work on this scooter made me cringe several times. But you sure enough got it to work! So I commend you for that. I want to build a fast scooter for commuting but I was considering using two of the small brushless motors that people are using on Electric skateboards. Love to see the RU-vid community is always posting inspiration for future projects

Hey TK, do you think you could give me the link to the motor, mate?

can you make a video of how you replased the motor cuz mine is makeing a clicking sound every time i ride it and i want to replace it.

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.

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.

T. K. I've been watching your videos for a while and got a couple of tips from your knowledge that, along with my own concepts have allowed me to modify a Schwinn Stealth scooter that went all of 10mph new to achieve 40mph, and I've built an eTrike from scratch that is faster than you would ever want to go. I have an issue now that is causing me headaches and I thought maybe you would have some advice. It's an invacare power wheelchair that takes 24 volts. The issue is that it will not accept more than around 29v and even after reprogramming it and removing most of the safety restrictions is nowhere near s fast as I want it and the motors are barely trying. If I could pump 36v or more into these motors I'm sure I could get a good 15-20mph out of them without worrying about stressing the motors but the joystick/controller will not allow it. Any suggestions? Thanks, and I love your humor and out of the box thinking.

Hey. Tk do you know about trade marks

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-->

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.

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.

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

I have to run to Walmart. I have to run to Home Depot. I have to pick up a part for the cr, for the pickup, etc etc. I'm 48 years old and I want one for an errand getter. 15mph is plenty fast but electric instant torque should have that thing power wheelying through 15 mph. Settle back to a sedate 12-13mph for the cruise. Some decent brakes. I'll run errands on one of them little electric razor scooters just like you're building. I'll have to continue checking it out. Power wheelies through 15mph. Just right..

So why did u change the sprocket

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

where did you get the sprocket? and please tell me it 44t t8h sprocket fits easily on the #25 chain

Cost?

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

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

I think you're loosing speed to the heat generated by the motor. I like how you bolted everything together, but there comes a point where welding could possibly offer a quicker, better, and easier solution. Especially in the area of constructing a motor mount. I.e. you need to "level up" your building skills. Nonetheless, there is a lot of hard work here. Good job.

YESS!!!! fianlly xD

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

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

28t rear sprocket would get you nice top end

A kill switch on handle bar would be better than the string pull fuse method

Removing the fuse is a good way to lock your bike

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