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850g progressive fork spring

  • Thread starter Thread starter mazza
  • Start date Start date
M

mazza

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I recently bought a set of prohressive fork dprings for my 750g/850g the 3 inch spacer is way too long . The information on the spacer length needed was not in the box nor was the the spacers to be cut to size any one know the length of spacer required, i trolled through 50 pages on here and gave up looking
Thanks help
 
mazza said:
I recently bought a set of prohressive fork dprings for my 750g/850g the 3 inch spacer is way too long . The information on the spacer length needed was not in the box nor was the the spacers to be cut to size any one know the length of spacer required, i trolled through 50 pages on here and gave up looking
Thanks help
Click to expand...

You should have came here first asking about fork springs. Sonic straight rate springs are used by a lot of us and we, I recommend them highly. As for your progressive springs, if you don't an get answer here, you need to contact the spring maker for that info. Research front fork sag/setting up your front end.
 
Yes, the spacer can easily be the wrong length. Just how much too long is it? :-k

With the forks fully-extended, the top of the spacer should be about the top of the fork tube, maybe just a bit above. When you install the cap, it will compress the spring about 3/4".

How to tell if that's the right length?
Check for "spring sag". With the bike on the centerstand and the forks fully extended, measure from the top of the dust cap on the lower leg to the bottom of the triple clamp. Take the bike off the stand, put your weight on it as if you were riding. Have a helper measure from the dust cap to the clamp. You are looking for a "sag" of 20-25% of total travel. Most of our forks have about 5" of travel, so you are looking for 1 - 1 1/4" of "sag". If your sag is more or less than that, adjust the length of your spacer accordingly. By the way, it is much easier to cut PVC pipe than those metal spacers. PVC pipe is relatively cheap at your local big box store.

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