New answers tagged cycle-computer
According to the Cateye CC-MC100W site, it supports "Tire size： 100mm～3999mm". The Velo 7 supports 100cm～299cm. 29 inch * 25.4mm/inch * 3.14 = 2313mm. So both computers will be fine. Note that "tire size" in this case means outside circumference rather than diameter. Sheldon Brown has an exhaustive discussion but the easy way to find out is a roll out ...
Every bike computer you'll ever use has some initial setup where you choose the units, set the time and enter either a wheel size or circumference. Cateye's take a circumference and there's a handy chart in both manuals to help you choose one, or you can measure it. Micro Wireless Velo 7
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