2DOF+Traction Loss Project

Hello from Canada,

First off, I'd like to thank everyone in this community for the wealth of information that has been posted. I have read a lot of threads and FAQs over the past 2 weeks. Without it, I would not have worked up the courage to tackle such a project with no experience. My hope is to make this thread a one stop shop for anyone looking to do this type of project.

I mainly play F1 2017, Dirt Rally and Assetto Corsa and the goal is to re-purpose current seat for motion simulation and eventually VR later this year.

Starting Point

Shopping List:

Arduino clone:
Link

Servos for mock up:
Link

Potentiomenters for mockup:
Link

Want to try something like this to start


Hall Effect Potentiometers for build:
https://www.digikey.com/products/en?keywords=987-1392-ND

BTS7960B (IBT_2):
http://www.ebay.ca/itm/BTS7960B-43A-Double-DC-Stepper-Motor-Driver-H-Bridge-PWM-Arduino-Smart-Car/192001422696?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

Flexible Couplers:
https://www.ebay.ca/itm/5-6-8-10-12mm-Shaft-Coupling-Aluminum-Flexible-Coupler-Motor-Connector-D25L30/322029099152?ssPageName=STRK:MEBIDX:IT&var=510967139268&_trksid=p2060353.m2749.l2649

Transtecno DC 24V 60:1 motors
http://www.transtecno.com/en-en/gearboxes-and-gearmotors/12v-24v/dc-worm-gearmotors-ecm/


U-Joint off eBay:


The last thing to buy are the power supplies and steel tubing for the frame, but lots of time as some of the items I've ordered won't be in for 2 months.

Wiring ()



As for the frame design, I like the DOFReality design and will likely copy that, but I'm also open to suggestions. I also thought about doing a Simukit style 3DOF, but since it's mainly for racing I leaned more toward traction loss. Will have to spend some time in SimCalc once I decide: https://www.xsimulator.net/communit...e-linear-speed-and-forces-of-your-design.270/

Comments, tips, advice are welcome.

Some shopping for the morning, bought a SimTools pro license and another universal joint after reading this post:

I wish I had found this post earlier instead of buying a scrap u-joint! Thanks for the idea and links! @armpit

Can anyone recommend a power supply for 24V 15A 250W motors? I was thinking about getting 3 of these off Amazon: Link

Would be cleaner if I could get just one power supply with enough watts.

After checking out some other 3DOF threads and asking other members, I've ordered the MEAN WELL SE-1000-24 for a power supply:

Amazon Link

Found this tapered bearing for the front pivot point of the traction loss:

https://www.bearingscanada.com/3030...30x72x19-p/30306-nachi-tape-roller-307219.htm

Go to pricess and source a Pillow block bearing, Easy and has a flange to mount with.

Dont bother with an Axel bearing like that.

Thanks for the recommendation @Nick Moxley ! I will have a look around next time I'm at Princess Auto. I picked up a welder from there the other week.

I'm leaning toward the DOFReality design and was going to have it underneath the frame. I read another post that suggested a lazy suzanne bearing and I found this one for $5 that supports 300lbs

https://www.bearingscanada.com/300-...-16-Thick-p/300-lbs-capacity-4-lazy-susan.htm

That site also has decent pricing for heim joints in CAD $ and I will likely order from there:

https://www.bearingscanada.com/4-Female-Rod-End-10mm-PHS10-2-Right-Hand-and-2-p/phs10.htm

I Highly suggest these style over the Open Style heim joint. I personally plan to replace my Lazy susan, it works but its not ideal.

https://www.aliexpress.com/item/Fre...73bb7c8&transAbTest=ae803_4&priceBeautifyAB=0

Thanks @Nick Moxley . I'm going to end up buying 2 solutions to every problem at this rate lol. Oh well, doesn't hurt to experiment.

I unexpectedly got my servos in from Amazon on a Sunday and spent all afternoon building a prototype out of Lego and paper clips.
Went from zero SimTools experience to playing a game really quick, thanks to the contributors in this thread: https://www.xsimulator.net/community/threads/rc-model-for-motion-simulation.4600/page-2
Again, what a great community!

Feel free to make fun of my driving... I meant to go over that sausage curb for dramatic affect.

My Hall Effect Pots already got delivered! Ordered on Friday and arrived on Monday. Didn't know Digikey.ca ships from Winnipeg.

Jigga what ?

Digikey does NOT ship from Winnipeg, Lol

they ship from Thief River Falls Minnesota.

PS where you located ?

I was surprised since I also thought it would come out of Minnesota, but the shipping label said Winnipeg. I'm in Calgary.

Very strange. Id like to see said label if you dont mind, lol Is digikey holding out on me and holding Stock IN Winnipeg i dont know about.....might need to pay said address a visit eh.

Unfortunately I always rip off the label before I toss the box in the recycle bin, otherwise I could have snapped a picture.

Ah well, darn. Next time im chatting to support. Ill inquire on that one.

So they were out of the heim joints and I had to cancel my order. Will go ahead and order the ball joints you suggested @Nick Moxley
https://www.aliexpress.com/item/Fre...&terminal_id=d11232b2f40f4f21b771f4b02bf3bc3a