He doesn't sound too bright. 24mph in an Iron Man? He is going to blow up and never finish the marathon. He definately needs to pace himself.
Nope, there are no 15 tooth freewheels available. There actually have been rumors of one, but no one has actualy seen it (rather like bigfoot IMHO). There really isn't enough room for the free wheel assembly inside of 15 teeth.
I try to ride at 100rpm and sprint around 130 (and top out around 180 downhill)
42x16 @ 100rpm = 21.1mph
46x16 @ 100rpm = 23.0mph
so you have in effect added an easy 2mph to your cruising speed, and 3mph to your top speed with that gearing (assuming you have the strength to turn the cranks at that speed). That is why 24mph is a lot more attainable for you.
:-)
Originally Posted by
Deademeat
I really don't think my idiot is that bright. Quite fast though. I suppose both of those attributes probably go with the territory. I couldn't find a 15T freewheel that would fit - one probably exists somewhere, but it was easier (though not cheaper) to just suck it up and get the chainring.
Dave