Recent content by flycast

Thanks. What limits the pressure differentials?

I posted a question at another forum about "choked flow" where a fluid (in this case air) if flowing through a very small orifice. Apparently when the pressure difference on each side of a orifice is about 2:1 and above then the speed of the air passing through the orifice is limited to the...

OK... Sounds like gear teeth have very little to do with it once I change both front and back gears. It sounds like the following make the most impact: Length of the rod the pedal is attached to (crank) Front gear diameter rear gear diameter rear wheel diameter I am guessing that...

I am a cyclist and am starting to think about gear ratios. I have counted teeth on my bike gears (touring) and calculated ratios and the results do not make sense to me. I am left with the beliefe that ratio is not all at work here. It seems that it also has to do with the diameter of the gear...