|   Proper way to measure rear wheel travel? | ScottW
Mar 17, 2003 9:58 AM | | I'm measuring the rear wheel travel on my new ride which has different travel settings. Is it accurate to simply take the coil off the shock and measure the distance from the ground to the rear wheel drop out (bike in workstand) in both the fully extended and fully compressed positions to get a measurement on travel? I know that the bottom out bumper will compress somewhat and allow a little more travel but I figure that will be a rare occasion if I have the shock set up properly. The bikes is a Foes FXR single pivot, so the rear wheel will travel in an arc. I don't know if that would have any effect on travel measurement. |
| just a thought... | sdbullock
Mar 17, 2003 10:37 AM | | You could try finding out the EXACT ratio of shock stroke/travel to axle travel and simply do the math on paper, rather than trying to measure it physically. This would offer only ideal (as opposed to real) answers, i believe, but it has worked for me in the past on four bars. It might be rather involved to find the ratios exactly, too... Good luck! |
| What you are suggesting is the easiest way... | Tscheezy
Mar 17, 2003 11:01 AM | | and as long as there is absolutely no flex in the stand, etc, it will be pretty accurate. This is better though:
Find a broom handle and tape it to the bike very firmly across the top tube and seat post so it ends about 7 inches above the rear wheel (picture a fender extending horizontally back from the seat post). Mark a point on the handle which is perpendicularly above the rear axle and measure the distance between the axle and the point while the bike is sitting on the floor, spring installed, no weight on it. Now take the spring off the shock, compress the bike firmly (to parially squish the bumper) and measure again. Do this in each setting. Subtract each compressed distance from the resting distance. This measures actual vertical wheel travel like the bike would experience on the trail.
tscheezy |
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