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Help Sigma 600
I'm 1200 miles from home for the summer, and forgot to bring the instructions for my Sigma 600 bicycle computer. I had to change the battery and now I don't have the 4 digit wheel size number. Anyone know the number for a 27x23 road bike? Thanks cause I'm screwed without the wheel chart. ...jerry |
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#2
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Help Sigma 600
On 2006-05-28, Alibi10 Jerry wrote:
I'm 1200 miles from home for the summer, and forgot to bring the instructions for my Sigma 600 bicycle computer. I had to change the battery and now I don't have the 4 digit wheel size number. Anyone know the number for a 27x23 road bike? Thanks cause I'm screwed without the wheel chart. ...jerry If you mean 700x23, try 1325. |
#3
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Help Sigma 600
This page appears to have what you need:-
http://www.branfordbike.com/computer/comp13.html Lewis. ***** |
#4
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Help Sigma 600
The Sigma booklet says 2133 (mm) but it's far more accurate to sit on
the bike and measure out what the actual distance is the wheel goes with your particular tires and weight. |
#5
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Help Sigma 600Thanks!
Thanks guys, got it going. ....jerry |
#6
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Help Sigma 600
I would second the rollout method as the best way to get a more
accurate odometer reading on a bike computer. The Sigma units don't do any built in unit conversion for mile based readouts. If you want metric then just enter the circumference in mm. For miles, divide the circumference in mm by 1.61 (i.e. # km/mi) to adjust the scale. |
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