Here is my very annotated microsoft excell gearinch, speed and rpm conversion caluclator.
Rightclick save as here
This helps you calculate gear inches, development from your gear ratio and wheel size, and then helps you calculate your cadence given a certain speed and gear ratio and viceversa.
This is a learning tool!
This is annotated to the point that you should be able to learn from it and make the calculations by hand
If you want this explained a bit more, I wrote an explanation of how to get from speed to cadence here:
3 page pdf, right click save as here
The "paper" is a work in progress, but I hope it helps elucidate the process. Let me know if you have any comments.
This is essentially freeware, if you like it alot and feel the need to pay for it, you can paypal me at the rocketmail.com address on the first page. modify it, distribute it whatever, just retain credit to me. If for some unknown reason you feel the need to use this to make a profit, speak to me first.
If you have any comments, please let me know.
my bike page. Tarik Saleh homepage.
tsaleh "AT" rocketmail "Dot" com