Timeline for Why are bicycle pedal threads' handedness left on the left and right on the right?
Current License: CC BY-SA 2.5
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| Feb 19 at 16:07 | review | Suggested edits | |||
| Feb 19 at 21:41 | |||||
| Jan 17, 2014 at 11:06 | comment | added | Krista K | Also the bearing cups for the crank can have right and left threads. | |
| Mar 8, 2011 at 0:15 | comment | added | lantius | Wikipedia here is correct. The assumption that the bearing friction across the entire surface of the spindle is equal is incorrect. The friction is highest at the top of the spindle, where the rider's force is pushing down on the pedal. If you look at this point of highest friction, it moves opposite around the spindle to the direction the pedal is moving - as the pedal rotates clockwise around the spindle, this point moves counterclockwise. Regardless of which way the pedals are threaded, they won't loosen if they are being spun either direction without this downward force. | |
| Mar 7, 2011 at 20:15 | history | answered | Ted Bunn | CC BY-SA 2.5 |