My setup: 59cm Soma Rush (58mm BB drop), 170mm Sugino 75 cranks, SPD-Rs

I know my pedal strike angle is over 43, because that's the angle of the banks on my track. A quick back of the envelope calculation puts me around 50deg, with the q-factor of my cranks, 700x23 radius, and pedal length.

i agree. i've never understood people with a mind that thinks that this sort of information translates to real life.

but whatever. i'd rather ride than analyze riding. maybe i'm demented.

43 is the angle of your track, but presumably it's not flat and then all of the sudden angled, like this: _/
Nor are you riding on said shape near the bottom of the abrupt transition from 43 to 0. The angled part of the track is flat when you're on it.

yonder, you're not riding perpendicular to the ground when you're on the track.

I used, given :
Radius of wheel : R
BB drop : d
Crank length : l
Q-factor : Q
Pedal length: p

Height of pedal at lowest point : d = R - d - l
End of pedal : e = (Q / 2) + p [ this is a little fudged, because it's not quite accurate ]

So with a right triangle, we're going to solve for the angle D.

That should be pretty close, unless I've forgotten my math.

it beats working. if i could ride around the office, i would...

that said - i'm definitely a nerd. math is way cool.

you're assuming your pedals have zero thickness.

when i ride through a turn on a local velodrome i hit the asphalt with my right pedal on every revolution. It goes : boom...boom....booom....boom...boom....until the straight. :D

Sorry, I didn't realize this was a dick-waving thread. Thanks for correcting my rough approximation.

ha ha ha ha ha, it was a dick waving thread as soon as the third post complained that the original formula didn't account for tire compression. :bday:

I'm too lazy to find a measuring tape, let alone measure my bikes and do math. I'm going to guesstimate a 60 degree lean for each.