What motors to use?HELP

[Antoniyo1593]

Hi guys! Newbie here. I'm modifying a pedal kart for my kid I want to make it electric, I saw these motor that they use for ride on cars 12v rs570 with gearboxes on them already am I able to use this? How fast will it be? Planning to over volt it aswell

 

[Functional Artist]

Hi guys! Newbie here. I'm modifying a pedal kart for my kid I want to make it electric, I saw these motor that they use for ride on cars 12v rs570 with gearboxes on them already am I able to use this? How fast will it be? Planning to over volt it aswell

Howdy,

You can but, their mostly plastic
…& you have to be able to "match" your wheel "hub" to the motor hub
(overvolting is usually not a good idea)

Most small karts are powered (very well) by 24V 500W motors
…& are easily connected to the wheel via a chain & sprocket

Years ago, I built a kart for my son powered by a motor like this
…& he rode it everywhere

https://www.youtube.com/watch?v=YZ6bcBy1O1M

 

[EpsilonZero]

Those motors and gearboxes are for specific ride-on toys. I went through three replacements on my son's BCP Jeep recently. Teeth shearing off and melting plastic is not fun to have to deal with; especially as you upgrade the power. You would also have to fabricate or otherwise attach existing mounts to the pedal kart. It seems like way to much work to put something that breaks so easily on the kart when you could put a more reliable motor on it and drive the wheels with a chain and sprocket setup (like Functional Artist, above). In fact, if you could get a used Razor chassis (e.g., Dune Buggy, Ground Force Drifter) you'd have an easier time with a more reliable chassis (I have seen crazy power on these chassis) unless you just want the challenge of fabricating something unique.

 

[Antoniyo1593]

Right shredded gears is big no lol.. So what happens if i only use a 24v 100w motor?

 

[Functional Artist]

Right shredded gears is big no lol.. So what happens if i only use a 24v 100w motor?

Um...your kart would not be very powerful

My sons kart in the video above has a 24V 450W motor

Here is a thread on a kart that I built for my daughter
...it may have some info, pertaining to your situation

http://www.diygokarts.com/vb/showthread.php?t=37775

 

[Antoniyo1593]

How underpowered? Like less than 5mph?

 

[landuse]

How underpowered? Like less than 5mph?

Like you might burn the motor out.

 

[Antoniyo1593]

Oh OK.. Is 350w enough? If yes what speed will it have?

 

[Functional Artist]

Oh OK.. Is 350w enough? If yes what speed will it have?

Well, ya gotta do some figurin'

Try the "Ballpark Equation"
...it should put ya "in the ballpark" of what a "given" set up will do

Here is some info http://www.diygokarts.com/vb/showthread.php?t=38785

 

[ol'joe]

In my opinion , when the load gets really light, the speed really slow, the duration of use highly temporary, nothing will provide the motor and gearing required like a cordless drill motor, meaning a cordless drill, complete. Old guys call them drill motors instead of drills because drills are the little twisty things that actually make the holes .

Those drill motors are cheap, powerful, geared real slow, have a "throttle control", can be clamped onto the machine several different ways. The chuck will clasp a rod with a sprocket on it, at least for a while, and when that one starts slipping you can replace it with a "real" chuck that tightens with a key.

The only downsides to using them is not much speed nor power, plus nobody learns much of anything about electricity. If neither of those things bother you much, well, I guess it is off to harbor freight! …..Joe