What gearing is best?

[mnetherc79]

My fastest ever sprint was 63km/h after a leadout (dead flat no wind), with my biggest gear being a 52/13 (Shimano Tiagra running gear), my legs were spinning pretty fast from memory.<br /><br />Is there a way I can calculate my cadence in RPM in this gearing at that speed?

 

[maarten]

mnetherc79

52/13*2.136*60*cadence =63000

63000/52*13/2.136/60=cadence

so 123 rpm is the answer
I used 2.136 as reference this is the mesure for a 28inch wheel(standard orad racing wheel) with a 23mm tire if you have another wheelsize you have to substitute 2.136 with the correct mesurment for your wheel