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Re: How do shocks affect ride height?
Posted by steve (more from steve) on Wed, 4 Feb 2009 21:54:28
In Reply to: Re: How do shocks affect ride height?, john b, Wed, 4 Feb 2009 21:24:33
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The 9-5 rear uses coilovers. Perhaps if it didn't we could use airbags as a simple solution.
This damper ride height issue has been debated for quite some time. It seems that some feel that the stiffer Bilstein/Konis add a little bit of additional support. The physics is F = Fspring + Fdamping = − k x − b v . Dampers do nothing without a velocity component. What might happen in actuality is the car might settle at a slightly higher position because of the damping force as the car returns to its neutral position. As an example say the range of motion is 0 to 1, 1 being the top of the motion. With the old tired OEM dampers the car might settle at 0.55 versus 0.6 when new. With new aftermarket dampers the car might settle at >0.55 or even greater than 0.6 depending on the strength of the damping force relative to the spring force at small displacements around the static height.
I think the overall damper impact on the ride height issue is still trivial since for larger dynamic motions the spring forces will govern the ride height. Even spring perches will not change the dynamic ride height. Stiffer springs would change the dynamic ride height.
I would be interested to see long term data on stock versus say stock with Bilstein dampers. Then we would know for sure that this is not a damper issue.
I'm exhausted so hopefully I've got that all straight.
posted by 69.112.185...
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