crank length vs. wheel diameter??

rpt50,
Welcome to the forums.

The gear ratio (crank length/wheel diameter) is hugely important. Unicyclists can talk for hours about this. This might not be the most fascinating conversation you’ve ever witnessed, but everyone has their opinions. In fact, there are several threads devoted to this.

Here’s one: New concept: Total Gear Ratio

Saskatchewanian came up with this beautiful chart of all the different conceivable configurations of available crank lengths and wheel sizes and their resulting gear ratios. He even included the effective wheel diameters of geared 24", 26", 29" and 36" wheels. (Eric, I can’t help but mention that now you need to include the 32" wheel. Geared and ungeared, of course. :D)

Happy reading.

Geoff