Lets build a legit 6DOF Motion Rig for less than $800 USD!

Salutations everyone!

Prolog: I have been lurking for a while anonymously dreaming and contemplating about a build. The various options and extensive knowledge required to successfully complete a DIY motion simulator build was beyond my skill set. Watching others here in the forums build their dream rigs gave me the inspiration to at least try to bring my dream rig to reality. Today I begin, I have chosen a pathway forward and made the first significant purchases to get the ball rolling (or the seat moving!). I am hoping I can get a helping hand along the way from the folks that have been around this block a few times to bring this dream into reality!

My goal: Build a 6DOF chair for both flight and racing purposes for a target price of $800.00 USD without compromising on quality and function. (No wood, and no junkyard parts) This build does not include the seat, wheel, stick, pedal, sim buttons, or shifter in the costing. This is strictly the 6DOF parts and assembly requirements. This build does include all required electronics to move the seat and interface with the computer.

Description: At a high level the rig I envision would be described as a 6DOF seat mover using 250W 24V 75RPM motors mounted to a triangular metal frame. I want the seat to be as low as possible so the cockpit may have a cradle type configuration. The design intention is similar to that of the "Roman Designs" 6DOF DIY plans but I aim to make it both more compact with inverted motor placements and a much lower seat placement by means of cradle supports and higher mounting points.

Bill of materials as of 4/24/2025:
1. 250W 24V 75rpm or 120rpm Low Speed Brush Motor, 44mm Longer shaft, Shaft Diameter 17mm Wheel Chair Used DC GearBrushed Motors. - 6x @ $28.41 USD each on Aliexpress
2. BTS7960 43A H-bridge High-power Motor Drivers - 6x @ $3.80 USD on Aliexpress
3. TBA..

Looking Forward to the build.. I am embarking on a 3 DOF with similar components.. Let me know what you do for your Arms... I've found 2 types shared but can only import 1 into blender and its the CNC version that will cost more and be more difficult to source a shop to do only 3. Looking for the Lazer cut flat Version..

Please Post if you figure it out before me!

Thanks!
Jon

I'm really looking forward to your project!!! What is the current stage of the project?

Will the assembly be on arduino r3 uno??