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 Question on rear shock set up - static sag - rider sag - spring rates

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jmardy
Montanarolo
Montanarolo
jmardy

Posts : 13
Join date : 2019-05-10
Age : 53

Question on rear shock set up - static sag - rider sag - spring rates Empty
PostSubject: Question on rear shock set up - static sag - rider sag - spring rates   Question on rear shock set up - static sag - rider sag - spring rates Icon_minitime1Mon Jun 10, 2019 8:05 pm

When I first got my new-to-me GRiSO, there was zero free sag and the preload was set pretty close to the middle of the threaded section.
So I back it off until I got about 10mm of free sag and with me on it (165 pounds nekkid) I got about 25mm of rider sag so 35mm total.

Normally I would think this is pretty good but I'm hitting the bump stop a lot.
Is this bike really designed for 140 pound rider or am I missing something?
Maybe I need more comp. damping?
Thoughts?
Thanks
-John
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ghezzi
Fra Cristoforo
Fra Cristoforo
ghezzi

Posts : 2802
Join date : 2014-05-22
Age : 62

Question on rear shock set up - static sag - rider sag - spring rates Empty
PostSubject: Re: Question on rear shock set up - static sag - rider sag - spring rates   Question on rear shock set up - static sag - rider sag - spring rates Icon_minitime1Mon Jun 10, 2019 10:47 pm

Try and aim for 25-30mm total sag, with all your battle gear on first.
Generally speaking, total sag is set for about 30% of total travel, and trust me, Guzzi frequently exaggerate their suspension travel. You can very the percentage, less for racing and more for comfort.

Then measure static sag afterwards.
This number is purely for ascertaining if the spring rate is desirable for your full dress weight.
7-8mm is ideal.
0mm indicates the spring rate is too lite or too low.
10+mm would indicate the spring rate is too heavy or too high.
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Question on rear shock set up - static sag - rider sag - spring rates
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