Re: How many teeth should my sprocket have?
With a 20" tire and 44T sprocket, you'll be going ~20MPH @ 6000RPM. 26" tire would be going ~26MPH @ 6000RPM with same sprocket.
You would need a 34T sprocket to have same gearing as 26" with 44T. If you want to go 30 @ 6000RPM, you need a 30T sprocket. Every tooth smaller is worth roughly 1MPH.