2DOF - Cheap and compact motion platform for MSFS - WIP

Hi everyone,

It's a work in progress for me as I am building the motion platform slowly (only a few hours during the weekends). I live in a small apartment on the 9th floor, and use only a jigsaw and drill to work - Cuts are not perfect, but everything is working fine so far.

Many thanks to Roman Design, SCK gaming, Flying Doc (A320), DMax, pmvcda and of course Noorbeast, as well as members of the community for your help and inspiration.

1st step is nearly complete - that would be the motion platform.
2nd step would be the seating part.

I'm still thinking on how to fold the chair such that it looks like a small cabinet/ corner table. Will update the thread with progress photos.

ps: my apartment floor is covered with foam mats as we have small children.

Lower the supply voltage from 24V to as low as you can set with the potentiometer in the power supply, IBT 2 bridges are easily damaged when supplied with 24V, SCK gaming wrote about this in their motion sim build thread. In smc3 utils set Fpwm to no more than 25kHz.

Hi Attyla, thanks heaps.
Yes, I haven't fine tuned the system yet - hopefully this weekend, i'll have the top platform and will be able to sit and adjust.
At the moment, i have set the voltage at 18.5v; i'll follow your advice for the 25Hz. Most probably, I'll revert back on this thread (or another) for fine tuning the motion.

At the moment, I'm breaking my head for the seat part as I weigh 95 kgs + need to keep the design light and discrete. I intend to have a pad for the throttle + mouse, and another one for the sidestick.

So all in all, finer adjustments are required (SMC3 + flypt).

I stumbled on Lebois Racing's Flypt tutorial (in french) which is quite instructive - Posting it here for ref.


Thanks again.

For 2DOF to work properly remember to balance the top of the motionsim carefully,.
That is, you construct the top part of the motion sim , mount the seat, joystick throttles , rudder and whatever else is to be mounted there
put something rotating on the floor under the motionsim and sitting in it, you are looking for a point in which you will have more or less balance (it is advisable to assist another person )
Looking at the pictures you posted I don't really understand what size your 2DOF will be or could you post a drawing from simcalc program ?

Dimensions of my 2DOF

The motion platform is 400 x 500 mm,roughly the size of a chair seat. The top part will be the size of a chair with the back at most at a 10 deg incline.My feet will be on the floor, so i've kept the cg mainly around the navel area.

Most probably it'll be trial and error as the distances are short and i won't be having the moment as yours (and also i haven't used simcalc !)

I'll also limit the travel movement as i'll be mainly playing flight sim - only little movement required.

I'll post photos as i go.
It might not be optimally balanced, but it'll work. I don't have much choice as space is a limitation.

https://www.xsimulator.net/communit...seat-for-a320-home-cockpit.17882/#post-238806

Here's what i'm aiming for, but the chair will be at a lower profile