Some may find this interesting.
i got these bumpstops with a 1198 SPGC koni front shocks
I tested this on a valve spring tester with load cell and digital vernier scale.
The data shows the load vs displacement, as well the 2nd graph shows the spring rate vs displacement (note the units)
The GC bump stop are very progressive initially adding circa 100 lb/in for the first 0.5" travel and then slowly ramping up and getting quite stiff at 1.5" travel
Obviously the bumpstop is in parallel with the coil spring so you can add the two stiffness value directly.

Hopefully people find this useful for tuning suspension to a progressive system. It goes against the riding on bumps tops as it isn't like a solid rubber/nylon block which would entail much much less travel .
i got these bumpstops with a 1198 SPGC koni front shocks
I tested this on a valve spring tester with load cell and digital vernier scale.
The data shows the load vs displacement, as well the 2nd graph shows the spring rate vs displacement (note the units)
The GC bump stop are very progressive initially adding circa 100 lb/in for the first 0.5" travel and then slowly ramping up and getting quite stiff at 1.5" travel
Obviously the bumpstop is in parallel with the coil spring so you can add the two stiffness value directly.

Hopefully people find this useful for tuning suspension to a progressive system. It goes against the riding on bumps tops as it isn't like a solid rubber/nylon block which would entail much much less travel .


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