Motor torque needed

[antoine2055]

Hi,
I plan on making a 2 DOF simulator. I would use 2 motors to rotate the chair about 2 axis, and I would use some light metal for the frame. How much torque or power would I need for the motors? I suppose one would use more because the second axis must rotate something heavier, but then I doesn't rotate about the same axis so maybe it actually needs less?

Thank you for your answer

[sirnoname]

It is not a question about rotating or mass. You need some power for acceleration of mass else your simulator will have unrealistic delays.
For flight sims, for simulating a big plane flight, acceleration is not needed.
So the answer could be: as much power you can get.
Most fun for racing is for sure the standard moving racing seat with low power actuators, so it is your decision where you go.

[antoine2055]

Well torque is needed for acceleration. The more power there is, the more torque there is at a given rpm. I need a rotation of 180° for complete movement (1g accelerating to 1g decelerating) and I think I could do that in half a second (60 rpm) so it doesn't lag. Now if I could get an indication of how much torque I would need, I could figure the power I need. I plan on putting the axis straight through the center of gravity of lets say a typical cockpit made a light metal.

Do you think half a seconde is too long? Maybe a quarter of a second, meaning I have to get twice the power no mather the torque?