Traction loss - a different idea I have in my head.

Most people I have seen use wheels for traction loss. I have this idea in my head to use linear bearings instead and would use rods to slide on instead of a plate. The rods on the side would need to move and the centering would need a bearing to center on and that would set on a flange bearing. Ideally I think i'm looking for about 3" of travel in each direction so I would need the horizontal bar to extend 3 inches out each side, the linear bars running forward would need to extend the same I THINK?,.,Next step will probably be to use sketchup and then print some parts for a test.

Shoot holes in my idea?

I have also found these...with theses you could have a track on teh base that wouldnt need to extend past the ends of your sim base potentially.

With the front bearing you have circular motion.
The traction loss ballscrew is linear.

which is why i have linear bearings running in both x and y directions.....traction loss to the left.....slides left on the rod rod going across goes foward on the left, back on the right. Pivoting linear bearings on the sides.

if I can place my front center pivot and then measure backwards to where I want my bar that will run horizontally where my linear bearing will sit I believe i can calculate the curvature of the circle so i can order a track for the space tht I need. I then can place bearing rollers on each edge of my rig to allow further stabilization for a much simpler solution. I want to avoid slop in the motion.

Okay I get that but how do you plan to connect a motor to it?

stationary plate that is on the base that the rig sits on. a secondary bar connected solid to each side

Ahh sorry,
was thinking ballscrew for surge and traction not linear bearings.
It would work but still a lot of work, is the purpose to reduce friction or noise?
Anyways intresting implementation.

reduce noise, slop and save on space as well as work for my current configuration

It should move smoothly I would think. Have you allowed for the joints in the red circles to move off of 90 degree angles though?

correct, these would need to pivot

Okay I think it should work fine then although it may be more complicated and costly then some other methods.

I think it might be overlky complex as well but I really want it to be smooth

Whats not smooth about a standard setup ?

I worry about the wheels developing flat spots as well as the need to extend the sides of the rig like a triangle.

You could power the front and have sway with your traction loss.

thats an idea but not sure my rig is setup for that

I used bearings running directly on an L shape steel path for the 3dof motors ... and used a ball screw wit asteel cage fist for driving the center flange bearing .

when I was planning my rear traction loss I though about a lot of ideas like yours at the end I ended up using roll bearing sliding on flat peace of steel . I use a 4x4 inch lady suzan in front.
thwo peace of plywood where those ball bearing are screwed in two the plywood . 3 rows of bearing (mix of metals and plastic ones). Metalic to help the slide and resilience. Plastic for the grab on to the sheets of metal.
I used 3 sheet of steel lubed with thick grease (bicycle grease).

If I had some cash I d remove the top plywood and use all the way 8020 . If more cash I d use only 8020 alu. that is for another project maybe

All i did was to get the curvature, although i had wheels was to put the pivot point in and put some string from that with a pen at the distance to where the wheels are and draw a line. i then welded the wheel brackets 90° from that line. you could just measure that arc line accurately instead of calculating, although if you have cad software it is easy with a known measurement.
I would happily draw the track section for you if your stuck