Tommys simulator powered by wipermotors

Here are my gear ratio calculations:

My wiper motors gear ratio is 55:1 which means the motor turns 55 revolutions when the wiper arm turns 1 revolution.

Therefore I want my motor to turn 55/2= 27,5 revolutions when the potentiometer turns 10 revolutions. Which means the arm will turn a half revolution.

To get 10 revolutions out of 27,5 revolutions I use a smaller gear with 8 cogs and a bigger with 24 cogs, which gives me the ratio 8/24=1/3.

27,5 x 1/3= 9,16 -> the potentiometer will turn 9,16 revolutions when the wiper arm turns a half revolution.

This means that the wiper motor arm will turn a bit more than a half revolution when you move it in x-sim. You can however correct this by reducing the movement in the program.

I hope this will help you with the calculating.

Thanks you Tommy!!!!

Hi, one more question.
What kind of power supply are working on your simulator?

I´m using 12v 38 A power supply
Thanks

I'm using a 12V car battery.

I measured the voltage now and with 11,9V as input I got ~11,0V out on one motor and ~10,0V on the other. This is when the motors are attached to the chair. I noticed that the output voltage rose to ~11,9V when i helped the motors turning. I guess that means everything is OK with my H-Bridge and maybe yours too if your simulator is heavy to move?
I also noticed that the output sank to ~5V if I stopped the motors from turning.

I'm actually not sure that my simulator works as it should because the ideal would be always 12V at full speed, even if the motors are stopped from turning. Maybe someone that reads this knows better?

maybe I have a Hot issue with the coolers.!
Thanks