looks like it should work. i remember seeing someone else designing something similar here before, not sure they ever built one. my main concern would be that there could be some kind of twist in the parallel bars, im not sure how you would eliminate that.
my advice would be to try it out. most of what you have here should be easy to build with little more than hand tools.
Thanks! You got me with the oversight on the parallel bar twist. I think it could be eliminated/minimized by very tight tolerance between the rods and the axle components.
Would absolutely love to try it out. Can fabricate most of the components but a quality heim joint and custom bushings are out of my reach.
Nice! Love the simplicity and adjustabillity of your design. Nice pictures mentioning the design steps too. Wouldnt be too hard to make, you can start with simple hardware store parts with lower tolerances just to make a proof of concept. Can even 3D print the axle hub in nylon or so just to proof out the movement when you are standing on the board. That will already help you get a feel for things pretty quickly.
I’ve played with a similar quick concept but without the simple adjustablity. I am very new to truck design, no idea if this would work. The concept still needs work though like preload the bushings etc, I might machine something to test in the future though.
This is what @MoeStooge eluded to when looking at my napkads
My general solution to his thoughts was a preload on whatever is constraining the movement. This isn’t really apparent in the Stooge 3-links it’s setup in a way that does not need this due to great leverage against misalignment. You would need to bend both of the 1/4-20 cap screws that attach the small links to the axle in order to see steering misalignment. That would require some ridiculous forces and the truck to not absorb the shock… idk
Question on truck geometry: the original concept has the truck angle set at the same point as it pivots from side to side, which is unusual. On the concepts since then, the truck angle is offset to a point above the truck (which is common).
What difference does that degree of offset make?
I’m guessing it effectively shortens the wheelbase (and makes it more carvy) as the angles decrease. Is that right? Does it have any other effect?
