Gem motor replacement options

GEM Forum
1

Hi All,

I’m on my 3rd ride-4-fun motor, and I keep burning them out on the hilly roads where I live. Does anyone know of any good motors that I can buy instead?

I just don’t know which manufacturers offer quality motors that I can adapt to my 2008 e4.

Thanks!

2

D&D offers torque motors. Grant knows all about them. @grantwest

What year Gem?

3

If you were near @AssyRequired , Cosa Mesa, I think, he may hook you up with an ac 5kw-7.5kw motor.

4

I got a D&D torque motor. It had zero top end

5

And by zero you mean, 25mph?
I know you are in the ac motor column, now.

6

Yes Dave you’re correct. I think 2 things. The Torque motor is great but it must be paired with the right gear raito. I have not tried it but the 9.1 transmission is where I would start or lower if possible if you wanna go faster then 30mph. Cause the one i had was paired with a 12:35 and it took off like crazy but was done going any faster after it got to 25-30 IMO with Brushed DC motors you get speed or Torque. You don’t get both. You gotta go AC if you want that.

1 Like
7

Grant was hinting at something that should not be ignored -

You really need to build a car to your needs and environment.

To offer sound advice, one needs to understand more details about your car.

The known so far:

  • 2008
  • e4 (4 passenger)
  • hilly terrain?
  • R4F blue motor → burning up? What exactly is getting cooked?

Some other things helpful to know:

  • What batteries are in this car? (weak lead acid will need more amps to drive the motor- therefore more heat)
  • What gears are in the gearbox? (guessing 12.44? ← which is good for hills, but not for speed over 30)
  • What speeds are you looking to do?
  • What programming is in the controller?
  • Any speed modifiers? (MMagnet?)
  • What is your skill set? (farmer, welder, rocket scientist?)
  • What is in your toolbox? (hammer, basic tools, full machine shop?)
  • Where are you located?
  • What is your budget?