Question about Sigma Bc 906 Computer
You can measure your wheel by placing your bike on a flat surface with
the valve stem on the wheel in the bottom most position or 6 o clock
position. mark the floor where the valve stem is. now roll the bike
forward so that the wheels gets one full revolution and the valve stem
comes back to the 6 o clock position and mark the floor at the valve
stem. now get a tape measure and measure the distance between your two
marks. Convert this measurement to usually centimeters. that will be
the number that put into your computer.
the manual can be downloaded here
Bicycle Parts and Accessories
Posted on Jul 10, 2009
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Posted on Jan 02, 2017
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