WHAT PEDAL AXLE DIAMETER DOES MY BIKE HAVE?
April 15, 2005
Back to questions
I have a dumb newbie question.
I recently bought a 2004 Raleigh
Sport road bike. This is my first "good" bike
(yes, I know the term "good" is relative).
Anyway, every bike Ive ever
owned has had plain platform pedals. I am conditioning for
a 150-mile ride, and I know these just wont work.
The bike came with 15mm (I believe) pedals with clips, which
I hate. I am considering buying a set of pedals that are
platform/clipless hybrids (platform on one side for casual
rides, clipless on the other for the long rides).
Heres my concern: The pedals
I am looking at are 9/16". Like I said, I believe the
Raleigh bike came with 15 mm standard. Is this an issue?
Pedal axles (also called "spindles")
generally come in either 9/16 or 1/2 inch diameters.
Your misapprehension comes from
hearing about the size of the wrench used to unscrew and
screw in the pedal. For most 9/16 inch pedals you can use
a 15 mm wrench to grab the appropriate part of the pedal,
called the "wrench flats" or simply "flats."
(Looks to me like a hex nut, but what the heck.)
So which pedal diameter does your
Raleigh have9/16 or 1/2? Id bet on 9/16. Why?
Youll often find 1/2 inch pedals on kids bikes,
and not commonly on decent road bikes like yours . . . unless
your bike has a French crankset, in which case forget all
of the above. (Luckily, highly unlikely.)
By the way: When you start learning
on those new clipless pedals, take your first bunch of rides
in quiet areas where you wont have to stop suddenlyuntil
you learn to clip out real quick. You can often tell newbie
clipless bikers by their cuts and bruises.