Suspension bench testing
I was wondering if there's a method everyone's using for bench testing when you don't have a track to quickly test out on.
- like dropping at a certain height and checking for bottoming out or rebound.
- maybe front and back drop test to compare
- or pre-load height measurement (manual says 2/3 shock travel position)
Maybe I'm just over thinking but this would probably isolate whether you need oil, spring rate or preload adjustments alot quicker. thanks
Great question. I hope someone has answers... I'm not an authority, but here's what I think I've figured out:
I think ride height (aka preload) should be set roughly to axles level. That gets the progressive suspension to the right part of the curve, frees up the axle joints, keeps a reasonably low CG yet still gives a decent amount of bump travel. You may want to experiment going up or down with the front or rear a mm or two and see if it affects handling balance.
If your compression damping is sufficient, you probably will have plenty of rebound damping. Try pushing down on the truck 'til its bottomed out and release quickly... does it spring off the ground, or just smoothly come up to ride height? I would be surprised if it seems bouncy at all. Compression damping, much more than spring rate, will determine your drop height without bottoming. Keep in mind that its OK to bottom out as long as it's not causing you to lose control.
Keep in mind that the chassis and tires are springs too...not always a good thing.
Never though of setting it so low but makes sense. Although, I think it depends on what spring rate and wt you're running. Currently I've got black in front with green in rear with 60 wt. Just under car weight, set at axle height, on mine any compression settles the shocks below axle height, so I set it slightly above so just dropping the front or back 2 or 3 inches brings the height back to the axle.
Seems to absorb alot with the bench test, but will probably have heavy bottoming on big jumps, which I'll have to try out.
Does anyone know of any drop test, like dropping from typical jump height for the revo and measuring an exceptable rebound.
Any info would be great.
Reason I ask is I don't get out to the track at all and most likely won't be bothering to do track trial and error.
I found that with reasonable levels of damping mine will bottom out if I drop it from about 8-12" (with one lipo installed). On the current configuration of the local track, the highest drops are up to about 2-3 feet if you don't overdrive the jumps too much. So, my merv bottoms out... no big deal. It usually doesn't get much if any rebound and when it does, I think its due to chassis flex/ spring. If I go much higher with damping, the merv is too stiff across pot holes and small irregularities and doesn't stick to the track in corners. Good luck!
bench testing well good idear, but as any battle plan it will not go as planned. there are no way to simulate the forces you encounder on the track.
find what ever works for u setup wise. dont copy setups from others find yourown basic setup and go from there trail and err is the thing with this hobby