Short stroke suspension
08-25-2012, 11:41 PM
Post: #2
How short is a piece of string ??
The question of how much stroke you require is directly related to how
much energy dissipation you need. And energy dissipation is dictated by
how big the bump is, and how fast you are going when you hit it Huh

My car is around 40mm down with 3kg/mm springs and AGX shocks. The
front struts had 40mm removed above the perch, and I am using full size
lowering springs. Bump stops are shortened one lump Smile

This works fine around town and faster driving on good roads. Where it
falls short is faster driving on poor roads with lots of dips and bumps. The
faster the car is travelling, the harder you hit the bump, and the greater
the energy the spring/shock combination has to dissipate. Note for the
technically inclined; I may not be explaining this in the correct scientific
terms, but you will get the gist of what I am trying to say Smile

When you have limited travel, the result of hitting a decent bump at speed
is "bottoming out" and a sudden upward acceleration of the vehicle as the
spring rate of the bumpstop approaches infinity. So yeah, if its just for a
daily driver, you can go low without rock-hard springs. But for a race car,
the less travel you have, the harder the spring you need.

Cheers... jondee86
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Messages In This Thread
Short stroke suspension - totta Crolla - 08-25-2012, 06:35 PM
How short is a piece of string ?? - jondee86 - 08-25-2012 11:41 PM
[] - totta Crolla - 08-26-2012, 07:46 PM
[] - jondee86 - 08-27-2012, 03:04 AM
[] - NoHachi - 08-27-2012, 08:21 AM
[] - totta Crolla - 08-27-2012, 11:15 AM
[] - jondee86 - 08-28-2012, 02:58 AM
[] - Lajoosh - 10-11-2012, 08:56 AM
[] - NoHachi - 10-11-2012, 11:45 AM
[] - fax0815 - 10-13-2012, 06:09 PM

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