On hard compression....
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Forum Name: BMW ///M Power
Forum Discription: Ask your BMW M Power Technical Questions here (M1, M2 hybrids, M3, M5 & M6)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=8663
Printed Date: 27-April-2024 at 07:50
Topic: On hard compression....
Posted By: encomium
Subject: On hard compression....
Date Posted: 25-June-2004 at 17:08
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on a hard compression, a progressive suspension becomes?
harder shorter longer softer just a quiz question i got.... ------------- 94 E36 M3 Coupe 
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Replies:
Posted By: dave 328
Date Posted: 25-June-2004 at 17:16
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Harder - but also shorter as the spring compresses. ------------- 
328 Coupe Sport, Digital climate, full leather, OBD computer, De-restricted with M50 manifold, big bore throttle, chippeduk remap, custom cold cone intake and X-brace |
Posted By: encomium
Date Posted: 25-June-2004 at 17:19
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hmmm....that's what i thought....but there is only one answer
oh well...i'm going with harder ------------- 94 E36 M3 Coupe
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Posted By: PikeyM3
Date Posted: 25-June-2004 at 20:59
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i.e there is less suspension travel available as the spring becomes compressed. And yes harder. But that is a very vague question that has all sorts of complicated answers. I don't think you can just say one or the other as it needs an explination to answer. Pikey ------------- Old enough to know better, too young to care! |
Posted By: Brucey
Date Posted: 26-June-2004 at 08:27
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-if you have a rising rate or 'progressive' spring, the springs get stiffer (more lbs/in) as it gets shorter. Problem is, the damper remains the same rate, so its likely to be overdamped or underdamped somewhere in the stroke. I agree with Pikey- what is 'best' isn't simple by any means... -On motorcycles, the rear suspension often has a single rate spring with a rising rate linkage. This is smart, as the damper remains better matched to the spring through the stroke. Surprisingly I have not seen this used on a road car suspension which is a pity- I think it would work really well. cheers
------------- ~~~~~~~ Brucey ~~~~~~ |