I’m not sure if suspension that leads to a wheel turning as a result of the impact is a good idea. Also at low angles the suspension would do nothing but introduce a weak-link in trucks that are already prone to bending if not made well.
It’s a cool idea though, and I would love to see someone make one and test it
So wheel doesn’t add more camber when suspension travels and turning radius of the truck shouldn’t change?
Or because of angled hanger / kingpin the wheel moving up might induce instability?
So what about a triangular link where you can set the suspension accordingly to your KP angle? So wheel geometry remains fixed except for shock absorption
I feel like that spring setup, the way you have them sketched, would work against the pivot pin. I’m thinking your springs would need to be oriented 90 degrees from where you have them sketched for use with a pivot pin and cup.
I remember seeing a suspension on a RKP baseplate. It looked CNCED in raw aluminum and It might have been on taobao. Anyone knows what I’m talking about?!
It looks interesting but also looks really prone to wobbles to me.
Picture it with the board leaned at like 5° and stuck there somehow, unable to change. Now you could theoretically turn the wheels back straight, compressing the suspension. Also if they were polyurethane wheels, it’d reduce the contact patch at the same time.
So this to me makes me feel like it’s going to be super wobble-prone, especially if used on rear trucks with any angle too much higher than 0°.
You’d need a double linkage parallelogram thing so that turning isn’t affected.
Single pivot suspension is I think just a no go.
With the double linkage, I think it would be pretty easy to set up to compress urethane rather than a spring. If you were to aim for like, even 4mm of suspension travel, with like 1.5mm of sag that’s actually a lot for any sort of skate truck.
Would probably easier to do a proof of concept design as a channel truck, since they’re so much easier to mess with. I mean, you can make a channel truck using only square tubing, angle bar, and welded on nuts for a thread in axle.
If you can get two sized of square tubing, one that fits snug inside the other, that’s probably a really good way to make the linkages.
I think I might have a solution to keep the suspensions mount always 0° even if truck / KP angle is regular 40-50° but I don’t have enough input yet on how to keep the wheel axles parallel to ground yet to complete a schematic.
Trying to learn on this to avoid the “camber effect” which would reduce wheel patch under compression.
@b264 if we keep the wheel contact patch the same as regular truck without angle or position deviation, this would be good then?
I don’t think its all that important to address honestly, especially for the front truck as forces are coming in at an angle anyway. The biggest thing is it means your linkages will need greater travel than your suspension travel, and they’ll need to be a bit more robust torsionally.