Need help finding a motor control for my daughters small electric go cart

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Can someone please help me find a motor control for my daughters go cart. The one in the picture is fried and I am lost trying to find a replacement. It has two hobby type motors with throttle and brake going to controller.I am making a litium ion battery with bms 21v-22v 6s 18650 batteries(I think that's how it's writen) I would really appreciate any help, cause summer is half over and she hasn't even driven it this year. Thank you

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Thanks, Jviz

Last Edited: Tue. Aug 1, 2017 - 11:38 AM
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The quality of the pictures is horrible.

It may be advisable to just replace some fets on the pcb, depending on what is damaged.

 

But with Ali's prices it's hardly worth warming up your soldering iron.

 

https://www.aliexpress.com/whole...

https://www.aliexpress.com/item/...

https://www.aliexpress.com/item/...

https://www.aliexpress.com/item/...

 

And when your daughter is a few years older, build her a better go-cart / trike.

You can get some pretty reasonable hub motors for about USD100 each

https://www.aliexpress.com/whole...

Paul van der Hoeven.
Bunch of old projects with AVR's:
http://www.hoevendesign.com

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I would like to advise you to the service center if available. Or try to contact the store to get new board.
It looks like pwm speed controller if you said there's a throttle.
Unless you are an electronics experienced I won't advise to do the repair yourself. 22volts will burn your FET's in no time.
.
MG

I don't know why I'm still doing this hobby

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What is the brand/model of the car?

 

Jim

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user

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You probably won't like this suggestion, but have you thought of this instead?

https://www.amazon.com/dp/B005FL...

 

Much more fun!

 

Jim

 

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ki0bk wrote:
Much more fun!

I guess you don't have kids.....  PEDAL?  Seriously?

 

Kids today are what I call "Energizers"  Unless it has a battery, they just keep ignoring....

 

JIm

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user

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jgmdesign wrote:

ki0bk wrote:
Much more fun!

I guess you don't have kids.....  PEDAL?  Seriously?

 

Kids today are what I call "Energizers"  Unless it has a battery, they just keep ignoring....

 

JIm

Grandkids, yes Seriously!  Pedal cars, tricycles, bicycles...... flying turtles! 

All kid powered, run for hours without a recharge.....

speaking of recharge, that is nap time smiley, great for granddads too!

 

Jim

 

 

 

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Thanks for the suggestion but she already has bikes scooters, one of those turtles and tons of thingz that keep her active. This is something I got special for her, and put in lots of tlc to make it hers. So it's important for her to have it running again

Thanks, Jviz

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I'll ask again....Who makes it?

 

JIm

If you want a career with a known path - become an undertaker. Dead people don't sue! - Kartman

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB user

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Sorry JI'm. I honestly don't know it doesn't have any info on it or logos. U bought it used

Thanks, Jviz

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I will take better pics after work tomorrow. One thing I did notice is the chip says "soft start, fwd, Rev, brk " but it didn't have a reverse switch in the cart.

Thanks, Jviz

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http://m.ebay.com/itm/Scooter-24V-350W-Motor-Brushed-Speed-Controller-Throttle-Twist-Grip-E-Bike-Razor-/302280056685

There's a whole heap of info on modding razor and similar electric cars on the internet - forums dedicated to such things. One thing you'll find out is these motors are cost engineered so you put bigger batteries etc, the motors will overheat. Then there's the dangers of li ion batteries, so you'd want to be careful lest you toast your child - i'm not kidding.
By the looks of it, your motors are battery drill type motors.

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There is a class of battery power racers called "Electrathon". If you look up that name, you will find hardware. These things are small, with an aerodynamic shell and (I think) a single motor that runs from one or more 12V SLA batteries. The races are really battery limited. If you run too fast, you won't finish and if you run too slow, others will beat you. Great to watch. Typically run in parking lots. They are often built in high school shop classes so the drivers tend to be pretty young (plus the low driver weight gives them more range).

 

<edit> The Electrathon" racers are three wheel. Rear chain drive from a formula motor (eg, everyone uses same motor). Two front, which are steered. Chassis has formula limits (max/min dimensions, I think). Aero shell seems to be free form as they come in many, many, shapes. </edit>

 

Jim

 

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

Last Edited: Thu. Aug 3, 2017 - 04:01 PM