Thread: Calibrating Computer - I Hate Math
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Old 11-19-07 | 07:18 AM
  #12  
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eubi
No Rocket Surgeon
 
Joined: Jan 2005
Posts: 1,648
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From: Corona and S. El Monte, CA

Bikes: Cannondale D600, Dahon Speed T7

I agree with rm-rf, the rollout method is the only way to go.

Pump up your tires. Put a tape measure on the ground. Get on the bike. You may need a "spotter" for that step. Ride your bike so the front wheel goes one full revolution (I'm assuming your pickup is on the front fork). Your valve stem is a good indicator. Just measure how far your bike travels in one wheel revolution. Convert to mm (25.4 mm/inch), and enter this value into your computer.

If you are really anal (as I am) you will do this a few times and average the results.

I use this converter a lot:

http://www.convertit.com/Go/ConvertI.../Converter.ASP

Simple!

Have fun.
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Last edited by eubi; 11-19-07 at 08:13 AM.
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