Question Better Design? 3DOF Heave – Triangle Layout Question (Motor Placement)

Hello Geniuses!!,

I’m building a full-frame 3DOF motion racing rig. Starting with F1-style driving (ACC initially), but I’d like the platform to be versatile enough to expand into other sims later (possibly flight or marine).

I’m planning a 3-post heave setup ( See pictures Below) in a triangle configuration and wanted to ask the motor placement preference:

Option A:
• 2 motors up front (left/right near pedals)
• 1 motor centered behind the seat

Option B:
• 2 motors in the rear corners behind the seat
• 1 motor centered up front under the pedals


From your experience:

• Which layout feels more realistic for racing?

• Which is more stable under braking and cornering loads?

• Which is easier to tune and set up properly?

• Any center-of-gravity or structural considerations I should prioritize?

Trying to make the smartest long-term design choice before finalizing the chassis layout. Appreciate any insight from those who’ve built both ways.

Thanks!

Have a look at: https://www.xsimulator.net/communit...grading-2dof-to-3dof.18398/page-4#post-247372

Looks very similar