2dof Jazzy Mini [noob]

Progress continues. Weight is still a worry for me, I mean the 10 pound hand brake we shall see... I do see some bars I could probably remove cut the fat from the plate on bottom, I would love a fiberglass seat. Everything is square straight and balanced so far.

I noticed while trying to figure out rod mount locations and angles that going above the ujoint makes a kind of twist feeling like its fighting itself. I have been checking simcalc for options. Would grately appreciate some elder knowledge here, what is the optimal place to mount. Here are 2 ideas, any advice would rock

I also just finished my levers, minus holes. I cut it to use 3 to 2 inches for tuning. Repurposed the wheelchair hubs for obvious reasons.

Thanks for the reply you the man! I meant at shoulder height when I hold one side still and try to pivot the other side it feels like it wants to rotate rather than roll, but when I do the same slightly below the level of the u joint it rolls much easier.

Would this 5 degree resting angle on the flange be a bad practice?

Its really interesting learning this portion and more complex than I originally expected. I learned the Z axis was allowing much more roll than pitch when mounting at say 13in and the closer to zero the more equal

For me I am less worried about aesthetic and space saving and want an optimal build that wont over work itself and perform well for racing, touge, drifting, and rally mostly. I feel your philosophy for response and snap. Im just confused a bit considering the unknowns

Almost blew it trying to stick weld a 6mm cut bolt to the motor shaft for the position sensor, luckily no harm done. Decided to weld a nut to the "replaceable motor shaft nut instead and it worked well enough. This is the geometry setup I have so far and the Simcalc numbers for guidance. I also ground down some m12 nuts to make spacers for the heim joints. I read around here 90 degrees is a happy spot for arm articulation avoiding losing leverage. I have just enough space all around.

Great tip! I used an extension cord and a 2 pole 60amp breaker in a box cut and attached the the PSU power cord. I am building the electronics box today and hopefully testing the movement! I am nervous about starting it and it slams into the plates, but will take it slow.

First SMC3 test and..... SUCCESS!!! The box, wiring and mounting all the electronics was a win very happy. Now I need to go to learn smc3 better, paint, and mount everything up properly.
https://youtube.com/shorts/bBHwQBn5SAA?si=i3kuO3Z9og-iQX4M

Happy to say the wiring went well.
-reused the motor connectors for the box
-made the electromagnetic brakes function when powered off
-running 2 sets of 2 6OHM clamp resistors in parallel to make 3OHM 200w on each p1 and p2 then attached to battery + of the Sabertooth to deal with regenerative current, hopefully sufficient.
-made heat sinks for the resistors
-Push / Pull fan setup 4 24v
- 2 poll 40amp breaker from PSU to 120v wall extension cord for a switch to be mounted on frame
- I bought a pack of 4 10g 40amp inline fuses decided to use all 4 on the motors pos. and neg. [not necessary]
-reused the 50amp [perfect btw] mini breaker that was on the wheelchair in between the PSU and all other parts
-use Ethernet wire for all the circuit board wiring

100% credit to BlazinH for the tutorial, sketch, and everything needed to setup Sabertooth 2x32 and 2x64 helped immensely
https://www.xsimulator.net/communit...ial-pid-motor-driver-sketch-w-softstart.9277/
Aswell as DrADHD his guides deserve more views imo. SMC3 setup guide

I am very close to having it work i tested live for speed but my motors have excessive play, I have read all over to unbalance and put load in one direction or use gas struts, or shorten the pivot on the lever arms any luck with this approach? It is unusable in this state constant correcting creates banging violently especially with no driver seated... I will try and use some bungie cords to see if the counter weight idea works. I also have noticed that these motors are running very strong with proportional at only 150 any pwrmax at 100, is this due to them being 24v I wonder, pwrmin above zero starts the rattle attack.