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      02-09-2018, 03:00 PM   #233
vtl
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Drives: 2008 BMW 135i MT
Join Date: Apr 2015
Location: Melbourne, Australia

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Quote:
Originally Posted by Traf View Post
Why did you ditch the helper springs ?
Helper springs look cool but are really only needed on racing setups where the spring rates are very high and/or the ride height is very low. With these high rate springs they don't compress much from full droop from the cars body weight. If you move the spring perch to give enough preload on the spring to stop it from being loose at full droop, your ride height will probably be too high. So the helper spring is useful in allowing you to run the desired ride height while keeping the spring in place at full droop.

On this setup I am only using a 5kg spring, unless I ran a really low ride height I don't need them. I have no interest in stancing out my car, with the ride height I will run, the helpers would be compressed at full droop. Removing the helpers just reduces the complexity of the system and helps prevents creaks and rattles.
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