Originally Posted by
Scrodzilla
What crank will you be using?
Odyssey Black Widow Euro Lites. I found this page
http://www.recumbents.com/wisil/qfactor/qfactor.htm
and derived the following info from it along with some measurements:
BB=Bottom Bracket Spindle Length
BWQ= Black Widow Q-factor (ie distance between pedals)
BWQ/2=Black Widow Q-factor divided by 2
CR2P(out/in)= Measured distance from chainring to pedal (outer position/inner position)= 23mm/27mm
CL(out/in)= Chainline (outer position/inner position)
BB: 118mm, 107mm, 96mm, 61mm, 53mm
BWQ: 141mm, 130mm, 119mm, 84mm, 76mm
BWQ/2: 70.5mm, 65mm, 59.5mm, 42mm, 38mm
CL(out/in): 47.5mm/43.5mm, 42mm/38mm, 36.5mm/32.5mm, 19mm/15mm, 15mm/11mm
Formulas:
CL(out/in)= (BB+23)/2-23 or (BB+23)/2-27
BB(out/in)= 2CL+23 or 2CL+31