Setting a Custom Wheel Size
Measure the roll-out (Figure 9).
Roll-out is the distance your bicycle travels in exactly one revolution of the wheel.
If one wheel on your bicycle is bigger, measure the wheel with the magnet.
With the valve stem of the wheel directly over the oor, sit on the
bike.
Have your helper mark the fl oor at the valve stem.
Roll the bike forward one revolution of the wheel, so that the valve
stem is again directly over the oor.
Mark the new location of the valve stem.
Measure the distance between the marks. If needed, convert to
millimeters. The result is your Custom Wheel Size.
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NOTE
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Hold for three seconds to go to Setting mode.
When BIKES appears, press
.
To change bike1 or bike2, press
or .
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(or)
(3 sec)
? mm
Figure 9. Roll-out.