[drastic.]

curious as to the mechanics of why this happened.

i have an '11 boxxer rc. soft spring, rebound set to 10 in for smoother/faster places i ride. i left that in there for a while.

went to a different spot more fr oriented w/ bigger jumps, and dropped the firm spring in. figuring that the firm spring for my weight (160lb, the spring is rated for 180-200lb) would cause the rebound to speed up, i slowed the rebound down 2 clicks, ending up at 12 in.

i do my first run for the day, and the first double i hit, i got almost hucked over the bars and nose dived. ended up speeding up my rebound resulting at 5 in from fully out.


was my original thinking of a heavier rated spring, springing back to its uncompressed form faster than a lighter-rated spring, thus causing a sped up rebound, incorrect?

obviously it is if the results are the opposite of what i thought, but im curious why?

 

[William42]

sounds to me like you had two springs mixed up.

 

[92SE-R]

yellow is light, red is medium, blue is heavy.

 

[4130biker]

Im pretty sure your initial setup ideas were correct. As long as you verify the springs are what you think they are...
Is it possible you created an imbalanced situation of slow rebound up front with faster out back? That could cause some bucking. Too slow rebound shouldn't impact jumping, but too fast, or imbalanced tuning front-->rear could.

 

[drastic.]

sounds to me like you had two springs mixed up.

na, hence why im confused.
i swapped the yellow soft spring out (30% sag) for the firm blue spring (about 17-20%).

 

[was?]

did you get bucked on take off or on landing?
it may be the cause that you didn't slow down the rebound enough, or you may have missed to adjust your body position further to the back. if you ride on your forks much this may well happen.

 

[norbar]

As someone mentioned - slower rebound on the front than on the rear would be my guess.

 

[Steve M]

That really shouldn't happen. Did you alter ANY other settings at all? Including compression at either end?

 

[EVIL JN]

Does the increased spring rate on fork springs really warrant that much of a difference in rebound speed. They shouldnt differ as much as rear springs and therefore maybe you slowed it down to much.

 

[motomike]

Could have something to do with the "stinkbug" effect of having a stiffer front end than the rear. If the fork is riding up higher in it's travel than normal and you didn't make any adjustments to the rear suspension to balance it out, I could see having some issues.