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Originally Posted by Hotseat
^ No, I have had this same arguement 1000 times in my career. Un-spring mass effect refers to the "un dampened" mass...
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We're not at odds here, just pointing out that most geometry changes don't change unsprung weight (and, yes, even "bike guys" realize that this is a misnomer and we're really talking about "unsprung mass" and the issue is inertia). As far as this mass being damped, well, yes, it
should be but it isn't
always - unless you count the internal friction of the suspension material (spring, gas, rubber, whatever), so I'm not sure I'd want to call it "undamped mass".
Oh - a compressible
fluid. Makes sense given what you're doing. You realize that I would regard this as a kind of
spring?
Back to your regularly scheduled pump discussion....