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how to determine suspension travel?

disasterarea

Monkey
Jan 26, 2003
137
0
How do I know if I'm getting full travel in my front fork? I have a MX pro ETA which is suppose to be 105mm (~4"), but try as I might, I cannot push it pass around 75mm (~3"). Do I need a 5'+ drop to test it out or should I be able to just push down on the handlebar and get full travel?
If I am not getting the full range what can I do to remedy the situation? Thanks
 

Phatswalla

Chimp
Jun 14, 2002
62
0
Seattle, WA
Did you get the fork used?

An easy but not very accurate way would be to put a thin zip tie around one of the stanchions and go for a hard ride. You can see how much travel you use up...but of course if you don't do anything to bottom the fork, you won't get 4" out of it.

Generally if a fork is setup correctly you should be able to come close to using up all of the travel if you bounce on it really hard or at least you should be able to feel that it's not at the end of it's travel when you get close to bottoming it.

If you really want to find out, take the fork apart. You could have too much oil in it or the travel might have been reduced.
 

D_D

Monkey
Dec 16, 2001
392
0
UK
You also might want to unscrew the topcaps and see how far into the lowers the stanctions will go, often the claimed travel is very optimistic or stops further down the stanction than you think.

If I have to take a fork appart I allways put a rubber o-ring on one stanction.
 

Sir_Crackien

Turbo Monkey
Feb 7, 2004
2,051
0
alex. va. usa.
to get the correct travel as the above person said let some air out. but at the same time you should use about 95% of the forks travel on your normal ride. other wise way have a longer travel fork