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      03-02-2015, 11:21 PM   #93
fe1rx
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Drives: 135i, 328i, Cayman S
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Location: Canada

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Quote:
Originally Posted by Bullitt View Post
I have the same Swifts in the front and they also show signs of coil bind. There's more missing powdercoat on the coil installed on the damper with more preload. I have Vorshlag plates which hopefully do not have that angle you speak of. The 400 lb/in spring might be in our future.
Here is a look at the Swift 7" x 400 lb/in (178 mm x 70 N/mm) spring with 3 mm preload on my strut. The problem is that the published usable stroke is only 93 mm. That means that the spring will be compressed beyond its published usable limit whenever the bump stop is engaged. It won't coil bind, but it will be over-stressed. You would have to go with an 8" spring, and that would raise other problems (i.e. tire clearance).

Name:  Front Strut with 70 N:mm Spring.jpg
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