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UnspeedySam |
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UnspeedySam World Chat Champion
Joined: 26 Nov 2009 Karma :
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Posted: 21:40 - 18 Aug 2017 Post subject: Does it matter which way up this spring is? |
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As you may have seen in the "What have you done to your bike today?" thread, I started rebuilding my Bros forks last weekend with some CBR600 F3 cartridge internals bought from the boot of a car at Fleet services.
I had to stop last week because I didn't have the right copper washers, but one of the forks is together with no oil and the other is ready to go back together.
My question is whether it matters which way up (it is more tightly wound at one end) the little rebound spring at the bottom is, and if anyone fancies explaining the science behind why or why not?
For bonus points, the same question for the main fork spring!
Thanks!
Here's the page I'm using if anyone is interested: https://www.hawkworks.net/tips/F3forks/F3forks.html
https://www.hawkworks.net/tips/F3forks/F3forks1.jpg ____________________ Riding: Does an Audi estate count?
Fixing: Honda VFR750 RC36 '94 and MZ ETZ 251 '90
Gone: ZZR600 '00, TRX850 '97, RXS100 '93, JS125-6B '07, BMW R1100RS '93, Kawasaki ZX-6R-J2 '01,Honda Bros NT400 NC25 '88 |
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Ste |
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Ste Not Work Safe
Joined: 01 Sep 2002 Karma :
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UnspeedySam |
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UnspeedySam World Chat Champion
Joined: 26 Nov 2009 Karma :
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Suntan Sid |
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Suntan Sid World Chat Champion
Joined: 07 May 2009 Karma :
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UnspeedySam |
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UnspeedySam World Chat Champion
Joined: 26 Nov 2009 Karma :
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Posted: 00:18 - 19 Aug 2017 Post subject: |
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Suntan Sid wrote: | A fork spring with gradually tighter coils is a "progressive" fork spring
Quote: | A Progressive Rate Spring has the advantage of a rising rate resistance to compression. The benefit of this is that the spring can be soft enough at the start of the travel to offer a "plush" ride, yet be firm enough at the end of the travel to soak up the big bumps. |
For the main spring, 17, the tighter coils need to be uppermost, not sure about the rebound spring! |
Balls. I guess I'm getting that fork apart again then and trying not to bugger the bushings.
edit: I might just leave it and do the other one the same...not sure...
edit: Wait I'm an idiot. I don't need to split the fork to take that spring out... ____________________ Riding: Does an Audi estate count?
Fixing: Honda VFR750 RC36 '94 and MZ ETZ 251 '90
Gone: ZZR600 '00, TRX850 '97, RXS100 '93, JS125-6B '07, BMW R1100RS '93, Kawasaki ZX-6R-J2 '01,Honda Bros NT400 NC25 '88 |
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Old Thread Alert!
The last post was made 6 years, 252 days ago. Instead of replying here, would creating a new thread be more useful? |
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