wireless cycle computer help

[darkfibre72]

I've bought a Raleigh 16 Function wireless cycle computer for it.
My problem is that the tyres on my bike (700x35C) are not listed in the instructions with a code to put in the computer...
What is listed is:
26.6" (700x25C) ------ 2124
26.8" (700x28C) ------ 2136
27" (700x32C) ------ 2155
28" (700B) ------ 2237


Does anybody else have this computer with my size of wheel ? what code did you use

 

[SimonRoberts0204]

It took me a while to realise this - '2237' for example refers to the circumference of the wheel in mm.

Either do as Lee said above, or measure the wheel diameter and multiply by pi. (3.14 or 22/7 are pretty good approximations though)

 

[HJ]

Find a bit of floor which is flat and you can put marks on, get someone to hold your bike, put a mark on the tyre where it is touching the floor and a mark on the floor. Roll the bike forward in a dead strait line and then the mark on the tyre reaches the floor again, put another mark on the floor, measure the distance in mm between the two marks on the floor, and enter that into your computer...

 

[darkfibre72]

Guys, thanks for all of your replies.. I'll try later