Reports of the demise of this Web site are greatly exaggerated! We at sheldonbrown.com thank Harris Cyclery for its support over the years. Harris Cyclery has closed, but we keep going. Keep visiting the site for new and updated articles, and news about possible new affilations.
Here's a neat thing. CPSC used to require (probably still does) that you be able to lean a bike 25 degrees (90 minus 25 is 65) before smacking a pedal. We're working on some bikes-in-boxes, which have to comply, so I need to know the right side Q (aka tread), the pedal width, crank length, tire things.
Andrew Drummond and Bhima Sheridan created this to help me design bikes.
The pedals in the list are the mks pedals we sell--you know them all. I think with clipless, the advantage is even greater.
T is actual tire width
R is wheel radius
QR is right-side Q
C is crank length
P1 is crank where pedal enters it, to the part of the dustcap that'll hit first
P2 is radius of pedal dustcap (13 is typical, no need to fret about this one)
L is complement of minimum allowable lean angle (25 deg)
D is bb drop.
To download, control-click, select "Save this link as..."; Select "Source" from the Format menu.
(If you're using a Windows PC, right click the link and choose "Save Target As...",)
(In Safari on my Mac in 2013, a click downloads the file to the downloads folder, ready to use. -- Harriet)
Reports of the demise of this Web site are greatly exaggerated! We at sheldonbrown.com thank Harris Cyclery for its support over the years. Harris Cyclery has closed, but we keep going. Keep visiting the site for new and updated articles, and news about possible new affilations.
