Any of you fellows know how to calculate spring rates? - Page 3 - Custom Fighters - Custom Streetfighter Motorcycle Forum

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Old Streetfighter Motorcycle Forum Post 05-10-2020, 08:53 AM   #21
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Default Re: Any of you fellows know how to calculate spring rates?

Yeah that did click last night while I was sitting in bed thinking about stuff instead of sleeping...spring is about 8mm longer than the CBR spring...which at 17.3kg/mm is about 300lbs of additional force.
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Old Streetfighter Motorcycle Forum Post 05-10-2020, 02:50 PM   #22
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Default Re: Any of you fellows know how to calculate spring rates?

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Originally Posted by a_morti View Post
Maybe the amount of preload on the spring makes the difference?

Idk... Just take the win!
The amount of preload makes a HUGE difference to sag, but an overly soft spring will still bottom out with even with no sag. That's really ALL preload does, is reduce sag.
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