STACK vs BUMP !!!!!

[fastford]

At what point does a bump stop become a rubber spring?

at the point when the shock body touches the slider on top of the bump stop, re suspension has all the data on there web site that shows the psi of there bump stops at different heights

[MasterSbilt_Racer]

at the point when the shock body touches the slider on top of the bump stop, re suspension has all the data on there web site that shows the psi of there bump stops at different heights

I was just being a smartazz. What dirt guys are now calling bumpstops, I would just call a spring. To me, a bumpstop stops the suspension travel. More or less, the height remains fairly constant no matter how much force is applied to it. That was what the original bumpstops used in various forms of motorsport were.

[F22 RAPTOR]

I was just being a smartazz. What dirt guys are now calling bumpstops, I would just call a spring. To me, a bumpstop stops the suspension travel. More or less, the height remains fairly constant no matter how much force is applied to it. That was what the original bumpstops used in various forms of motorsport were.

I was wondering what happened to you, LOL. I guess technically whats being run isn't a bump stop, but dang if I know what to call it except what you said, "a rubber spring". A true bump stop is something low riders drive around on, thats why you see them stuck on speed bumps.

[racin29]

yes they should be called suspension bushings that is what they are, anyways something else to keep in mind when running a suspension bushing like the one mentioned before, its 1400psi at 1 3/4 that divids out to a 800lbs spring but then you have to add your actual spring on top of that so say you have a 375 on the rf once you reach the suspension bushing your spring rate goes up to 1175, something to keep in mind for the ones wanting to try this out

[fastford]

theirs one more point i wanted to make about the bump stop setup, or rubber bushing spring or what ever you want to call it, it acts more like a progressive spring,the stacked setup is still linear after it hits the primary spring ,i think this is the stacked setups main advantage on a rough heavy track. both these setups are good once you understand them, but they are not for the beginner, here is an example, a guy at our local track that just moved up to limited late model this year and had been running top ten all year, decided to try the bump stop, his car would not turn left in a 40 acre field on throttle,he got lapped by the top 3 cars, who were all on bump stops, it scared him so bad he said he was taking it back off,he was to inexperienced to understand what was happening.