Need Help with Noisy DIY Sim Racing Steering Wheel!

Hey everyone,

I’m working on a DIY sim racing steering wheel project and having some issues. I started with a belt-driven system, but the belt keeps slipping over the teeth and making a lot of noise. It also limits how fast I can turn the wheel because if I turn it too fast, the belt just jumps over the teeth—super frustrating.

I’m thinking about switching to a direct drive setup for better performance, but I can’t afford a new motor since the only one that fits my needs is too expensive.

The challenge is I have two motors, but they only have a shaft on one side, which makes it tough to connect them directly to the steering shaft. I’ve thought about using gears or chains to link the motors, but I’m not sure if that will fix the noise or improve performance.

Does anyone have suggestions on how I can improve my setup without spending too much? I’d really appreciate any tips!

Thanks!

Don't mind the dirty wood I'm gonna change it to metal in the future

I tried pulling the motor a little bit away to increase the tension , after one crash the belt stretched

I've never seen a timing belt slipping when it's correctly tensioned and the motor flanges and bearings are properly fixed. Your motors are mounted on metal plates and not some flexing 3D-printed plastic parts so it should be fine.
Does the main shaft bend when the belt slips? If this is the case it might help to turn the motors 180° and put the pulleys on the main shaft closer to the bearing.

No the shaft does not bend it is very hard
And as I said in a comment before when I tried to apply more tension on it the belt got stretched

A real timing belt doesn't stretch. It should have glass fibres or steel wires embedded in the rubber for reinforcement. If you over-tension it it rips apart but doesn't stretch.

The one that stretched isn't usable any longer, anyway. If you cut it with scissors do you see any fibres or wires? I guess some chinese manufacturer replaced it by nylon strings to save cost.

Hi
No motor is the same , two the same motors have thiny diffinces they only act as one when you couple them without backlash .
Looking at youre picters there are gearboxes between motor and pulley they give backlash and could give stress on the belt
sorry for the bad english
regards ad

I couldn't see any fibers

Is there a name for the supported ones ?

Yeah the main idea of FFB steering wheel is that it gives you some resistance when you try to spin the wheel but in my case the belt jump over the teeth when you spin it a little bit quickly

Don't wory just keep practicing on your English ( I was at your place one day and still not very good at English)