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Re: [ST] Suspension upgrade (was: Sprint ABS)



>From: Matthew Heyer
>Progressively wound springs do not act with damping effect. Where the
>similarity might arise is that when riding hard. A progressively wound
>spring just changes the actual spring rate as it is compressed. Softer
>initially, and then stiffer the more the spring is compressed. Damping
>is completely different in that it works to impede either the compression
>or rebound of the spring.

Well, I know that they are different things. But does the change in spring
rate on its own not provide a retarding / impeding effect on the compression,
just like an oil orifice does for a constant wound spring? The higher the
force on the spring (speed of approaching / departing terrain), the higher
the resistance of the spring or oil density. Right? I mean the oil determines
with what speed the compression changes, but a change in spring rate also
changes that speed in a similar fasion... doesn't it? 

A similar thing I read here about multi-leaf springs, which also progressively
change spring rate with compression:
http://transport.tuthill.com/Reyco_Granning/reyco_granning-susp-basics.htm
"The multi-leaf spring has a rudimentary ability to increase damping with load,
due to an increase in inter-leaf friction."

Emile
www.piloot.com

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