Originally Posted by
cshell
I think It makes sense now...
As long as the correct "tire size" was put into the cateye, it doesn't matter where on the spoke the magnent is (In closer toward the hub or out toward the rubber tire).
Correct?
Correct! In reality the cateye only receives time of arrival data (and then does calcs), but conceptually we can think of the magnet as a tool to measure just RPM. RPM and radius give us distance!
The possibility of misreads can change things, but from a mathematical standpoint there is no impact.