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Old 01-08-2012, 03:52 PM   #11
Thomas Dylan
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Default A question about springs

Tmod
Thank you for the info. When I first started this I thought changing the shock and fork's valving and oil would be first but after looking into it, it seems as if springs come first then shock damping.

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Old 01-08-2012, 04:05 PM   #12
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Tmod
Thank you for the info. When I first started this I thought changing the shock and fork's valving and oil would be first but after looking into it, it seems as if springs come first then shock damping.

Regards
Yep it is a little hard to set the valving when you have no idea what spring you are going to use. The rebound valving is there to control the spring and going from a 600 lb/in spring to a 900 lb/in spring is a wee bit different.

Tmod
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Old 01-09-2012, 06:14 PM   #13
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Default A question about springs

Tmod,
Just out of interest, would you know, or guess at, if the Racetech spring rate calculators uses shock leverage in their recommendations?
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Old 01-09-2012, 06:20 PM   #14
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Tmod,
Just out of interest, would you know, or guess at, if the Racetech spring rate calculators uses shock leverage in their recommendations?
Let me answer it this way, When a bike goes into Racetech they will take a leverage ratio reading and use that info to match the proper spring and valving for the rider. Also taken into consideration is what the free sag vs rider sag is, For instance in my case after my testing I took a 1000 lb/in spring and with preload at 8mm I was getting 32mm rider sag and about 4mm free sag. The leverage ratio is not built into a calculation on the Racetech website for spring selection as that info was used to arrive at what spring works for what weight rider. Adding or changing weight of the bike as in Race vs Street will give you different results as well.

Did I answer your question?

Tmod

Last edited by Tmod; 01-09-2012 at 06:24 PM..
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Old 01-09-2012, 08:00 PM   #15
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Tmod,
Yes, from your answer it seems as if Racetech sticks to their recommended free and rider sag numbers and spring rate recommendations are based on getting these numbers.
Thanks again.
Regards
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