On Jun 29, 10:45 am, Phil B <phi...@sonic.net> wrote: > I got 2.173 with an unweighted roll-out. JB Green with moderate wear > on a Mavic Open Pro rim.
I use the lookup table that Cateye provides: 700x32C is 2155mm, and 700x35C is 2168mm. Therefore, 700x33.333C must be 2161mm. :) Seriously though, to elucidate on the level of precision we're discussing here, even if I messed up and programmed in the 2086mm figure for a 700x20C tire when I really meant 2161mm for my JBs, the error is only -3.5% (i.e., the meter will read 3.5% lower than actual speed). That means that at an actual speed of 31mph, the meter will read 1 mph slower at 30mph. The figure for 2155mm and 2168mm is even smaller at -0.3% and +0.3% respectively so yes, you'll be off by 0.1mph at an actual speed of 30.0mph. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
