Analysis of shock force vs. velocity graph ?

[TrackRat]

This is a force vs. velocity graph for a performance OE front shock with only 10K miles on it so I do not believe it is worn our, but it does have unusual damping IMO. Testing was conducted by an experienced tech at Koni's facility. Any thoughts on why the relatively high bump at low velocity and the great lack there of damping for rebound?

Thanks for any input as I've not seen this profile before and the rear shock also has an odd profile.

 

[NCRick]

Is it not more common to have close to twice the extension force than bump force? The Koni struts we have a;sp have much higher bump force.

With out the Absolute graph, it seems hard to tell if the low speed part of the force curve is influenced by bleed or residual pressure?

 

[GregLocock]

bump to rebound ratio can vary by a factor of 4 for cars in the same class presumably competing for roughly the same ride attribute. John Miles discusses this in VDI, some time in the last three years.



Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?