Showroom 2DOF motion sim on universal joint with two wiper motor from MB actros

Hi, I'm in the process of designing 2DOF motion platform made out of bosch rexroth profiles. I've already managed to control one motor. If you can please give me some advice how to connect this this type of crank with lever. I want to make a rod that goes through bearing to achieve only torsion force state on the motor shaft. I'm planning to machine a shaft that I will weld to the output shaft of the motor. then it goes through one or two bearings. For now I have problem with connecting shaft with POT and with lever. Can you give me some advice or levers to buy with hole about 14-15mm?
Here's some photo and video:



About motor:

24V ~240W - 37 rev/min(probably- that is the value of fuse in the fusebox of the Mercedes Benz vario that this motor came from) - https://allegro.pl/moje-allegro/zakupy/kupione/78ba1781-7294-11eb-accd-cb66203115e5

About hbridge:

up to 27V and 43A
PWM up to 25kHz

https://allegro.pl/oferta/sterownik...yYzQwMzIxMTQ3NjYyMDZkYWZlMjBmMzdkY2UzYjI4MDI=

Power supply:
PSU - 24V - 25A - https://allegro.pl/moje-allegro/zakupy/kupione/2240daf0-75dd-11eb-b586-e1a28adaa964

POT:
https://www.digikey.pl/product-detail/pl/cts-electrocomponents/026TB32R500B1A1/CT2153-ND/203774

Shaft connector for POT:

https://www.digikey.com/en/products/detail/adafruit-industries-llc/1176/5356856

Stay tuned for more info!

I did not mount the motors. Thank you for reminding me about the isolation problem.

I gathered many ideas to mount crank arm on motor shaft, I hope you'll find something that suits you
https://www.xsimulator.net/community/faq/how-to-attach-lever-crank-arm-to-motor-shaft.182/

Hi, it's was quite a while since I post last update... . But now I've done it till stage I can run it. Here's some brief of my run in Dirt Rally 2.0 New Zeland trail:

It is still quite wobbly because of too small universal joint in the center. One thing from me to new builders of that kind of rigs is to make sure that balljoints are free to move in all range of the rig and not bending the push rods on the edge of movement(especially pitch DOF). In my rig there is only m8 threaded rod and bending it during movement is not good idea (see the attached photo).

I've managed to connect it by second laptop via UDP(it wasn't that easy with windows firewall...)
For now I runinng this on flyPT mover because I want this to be as cheap as possible but on this software there is lack of plugin for Elite Dangeorus and I want to fly with it on VR badly . So maybe you guys can help with getting data from the game to FlyPT Mover software.

If someone have questions about this specific build or connection via UDP let me know and I will try to answer

I also want to thank you guys that helped me directly or not directly with making it real.

@noorbeast thank you for your tips. I've used option "mix sway with roll" and "mix surge with pitch" in the software but with very limited participation of sway and surge accelerations. In Dirt rally it works properly as the movement from tilt position of the car realitve to gravity has a large contribution in this type of race. For assetto Corsa I still need to adjust proportions of sway-roll nad surge-pitch.

I'm planning to put universal joint from drive train of the car but I have very limited access to welder so I'm looking for universal joint with two flanges(see pic below) more than with flange and a shaft on the other side

congrats with your motion rig! but wow, that's so dangerous. I use a M10 threaded about 6inch long, its quite strong, no bend since then.
and I use two flange joint too just like your idea for the center pivot, its very rigit and the wobbly feel is very minimal. so its a good choose I think.
and from the video, I think the snap motion from changing gear is not present. it's personal preference, but if you want to, you can change the setting in simtools's tuning center, with a little number on surge effect. max < min.
cheers!

You mean to set the snap motion to gear change without longitudal acceleration that directly conneted with chaning the gear? How to do that? I would like to feel the kick from changing the gear but I dont want much of movement form sway and surge accelerations. I wonder if it's possible to set that kick when software gets information about changing gear from lower to higher only. Or maybe I can adjust filters to feel the kick but not to fly away from the seat after crashing the car . About M8 push rod I've already bought a turnbuckle with internal m8 threads. Sadly I cannot fit any bigger threaded balljoints due to geometric restrictions close to the lever.

Yes, in simtools look for tunning center.. First maybe you should simtools to automatically grab your game input, and save it on your settings. And do some a fine tune in tunning center. For me I input very little number on surge, its 0.8 for Max and - 1 for Min. It's really snappy, and doesn't really give a harsh on the motion overall. If you find its too hard, you can always decrease the slider to the left on your game management >profile.

Thank you, but for now I'm using FlyPT mover.

Hi guys, I just want to say that since 2020 I went thorugh some progress and I've made a second, more robust, version of the 2DOF rig, and finally I've even managed to sell that. So now some young guy from the middle of Poland is making good use of the construction. So thank you all for all of your support and good words. Here's a promo movie for selling purposes:


And some photos from making 2.0 version:


Now I'm in the process of desining 3DOF rig so see you later in the new showroom thread chaps!