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Rear shock 'race sag'

Suspension Q&A with Jeremy Wilkey
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Old 07-01-2009, 11:05 PM
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Dirty Dave Dirty Dave is offline
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Question Rear shock 'race sag'

When we set 'sag' to the proper hieght for the rider's weight what fork angle are we actually trying to attain. I have access to a digital inclinometer and could measure directly in the fork tube. It would be easier than the tape measure from rear axle to fender trick (I think)


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Old 07-02-2009, 07:28 AM
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Jeremy Wilkey Jeremy Wilkey is offline
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Interesting question, but sag is about having "lose" travel in the rear more than fork angle, althought as you know the 2 are related.

Jer
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Old 07-02-2009, 07:45 AM
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whenfoxforks-ruled whenfoxforks-ruled is offline
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Tape measure? Sag tool yes!


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Old 07-02-2009, 10:07 AM
helio lucas helio lucas is offline
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some service manual say what is the correct angle for the steering headstock. donīt know if itīs valid to attain the correct sag.
but itīs very easy to get the correct sag with a measuring tape...


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Old 07-02-2009, 11:15 AM
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Dirty Dave Dirty Dave is offline
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Quote:
Originally Posted by Jeremy Wilkey
Interesting question, but sag is about having "lose" travel in the rear more than fork angle, althought as you know the 2 are related.

Jer

Hmmm... So... 'sag' is directed more at shock spring tension than attaining/maintaining a particular fork angle for best handling during the ride?
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Old 07-02-2009, 08:45 PM
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Once sag is set you can adjust the fork angle but moving the legs in the clamp.
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Old 07-02-2009, 10:31 PM
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whenfoxforks-ruled whenfoxforks-ruled is offline
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Generally, the sag is set, the front is happy. Fork height only makes a difference in turning and the dreaded head shake when you have them up too high.
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Old 07-04-2009, 12:33 AM
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well thanks all. I just thought that of the various dimensions given from the factory,i.e. rake... trail... steering head angle... one was the object of setting rear shock sag. And i do have a handle on the ol' tape measure but i thought throwing in a little digital technology would be cool and cheaper than the 'sag tool'. Any Hooo... I'm good... Thanks. Over and out...
D. Dave
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