MX650 mods? - Page 84 - Pocket Bike Forum - Mini Bikes
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if your pack has a balance port you can charg throw that port just get a RC charger and set it on 1S

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Re: MX650 mods?

Hello, could you tell me how many miles the Razor Mx 650 goes on 48v.......Thanks.
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Well, stock is not 48volts. On the stock 36v with good batteries, 40min or so. 8-10miles with the 12v 12ah batteries. Also depends on how long you are on full throttle etc.
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Re: MX650 mods?

I got around to lifting the bike about 2". I used a pit bike shock extender. I still need to work on the wiring and battery location.

@MrKitty , Do you know of a cheap rc charger I can use to balance out the battery? It's Lithium Ion and has 13 bms cables that go into the bms board on the battery. I wanted to see if i could discharge a single cell group by wiring up a small light bulb. The 5th cell group is about .4 volts higher than other cell groups and measures about 16.2 volts.
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you can use a imax B6 set it on li-ion and charg eatch group one at a time by the bms 16 plug no need to discharge li ion on top of it not being safe without a low voltage cut off circuit

.4 volts is a lot and i bet the bms board is stoping the charg once the high group is full

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Last edited by MrKitty; 04-03-2019 at 11:40 PM.
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Remember we talked about that turbo switch? Would something like that be really hard? Has someone here done one before and could you walk me through the steps and tell me what to buy? I was thinking about doing dual motors, but that would use way too much power right?
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Re: MX650 mods?

I just ordered a rear shock for my soon to be mx650- 2000w brushless conversion. Has anyone successfully upgraded the front suspension?
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i have seen people put down hill mt bike forks on them but be warned good ones are going to cost more than what the bike was new... you need the thru-axle type

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Re: MX650 mods?

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Originally Posted by MrKitty View Post
i have seen people put down hill mt bike forks on them but be warned good ones are going to cost more than what the bike was new... you need the thru-axle type

Any pictures or how to guides?


That is more then I will spend but curious.
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It wouldn't take much to adaptor a Fork setup like this to an MX650 all you have to do is remove the head tube and make some adapters
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Last edited by MrKitty; 05-15-2019 at 09:15 PM.
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Re: MX650 mods?

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It wouldn't take much to adaptor a Fork setup like this to an MX650 all you have to do is remove the head tube and make some adapters

Thanks, I will see how it goes after I get it back together. I purchased a better rear shock already.
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Re: MX650 mods?

I bought a 2000w brushless motor, the sprocket it came with is smaller then I want for the rear. It is a 25H chain sprocket.

Would this sprocket work on the mx650 hub?

https://www.amazon.com/XLJOY-Pocket-...ateway&sr=8-38
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its a start...

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Re: MX650 mods?

Hey - I upgraded my mx650 to 48v and was a bit underwhelmed at the gains. I was looking for a bit more torque.

I bought my controller, throttle, and charger from overvoltedscooters on eBay.

If I'm going for a bigger motor what should I look for? What is the difference between the 36v 800w and the 48v 1000w? They are similarly priced on ebay. I am a bit confused. Thanks!
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the more watts the higher the torque its simple

those ebay motors are CCA motors ( copper coated aluminum) and dirt cheap to manufacture the price difference to make a 800w 36v motor and a 48 volt thousand watt motor is only pennies...

any time you over volt or swap motors you should change the gearing...

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Last edited by MrKitty; 06-10-2019 at 07:19 PM.
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Re: MX650 mods?

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Originally Posted by MrKitty View Post
the more watts the higher the torque its simple

those ebay motors are CCA motors ( copper coated aluminum) and dirt cheap to manufacture the price difference to make a 800w 36v motor and a 48 volt thousand watt motor is only pennies...

any time you over volt or swap motors you should change the gearing...
Thanks for the input concerning the gearing - I was thinking about going with a 9t front sprocket.

What motor would pair well with my controller? I do not have much info on it.

Thanks!
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Try that 9 tooth motor sprocket first. You will lose a little top speed but you will be surprised at how much better the low-end is. Then you can decide if you want to get a bigger motor.
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it might gain top end becuse over volting gives more RPM

if you get a new motor get the bigest one your speed controller can handle then upgrade all of the batterys and motor wiring with car audio amplifier wire.

then if you still want more dig into lipo.

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Re: MX650 mods?

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Originally Posted by silverbullitt7 View Post
Try that 9 tooth motor sprocket first. You will lose a little top speed but you will be surprised at how much better the low-end is. Then you can decide if you want to get a bigger motor.
I'll have to give the front sprocket a go - This one? .... 9 Tooth 10mm Double D-Bore Sprocket for #25 Chain (SPR-2509C)

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it might gain top end becuse over volting gives more RPM

if you get a new motor get the bigest one your speed controller can handle then upgrade all of the batterys and motor wiring with car audio amplifier wire.

then if you still want more dig into lipo.
That is just the thing, I do not know what size motor my controller can handle. What would you suggest?

Thanks y'all!
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I would contact the manufacturer or whoever you bought it from and find out what it's rated for before considering a motor upgrade

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