rousseau

Will those oversized BMX pedals with little spikes in them for traction fit on a road crank?

My gettin' around town bike is a 1980s steel frame Bianchi Sport with panniers and early-2000s Campagnolo components. In short: a road bike. When I got it a few years ago I put a set of Jekyll-and-Hyde pedals on it, i.e. one side is a platform and the other side is MTB clipless. Which seemed like a good idea at the time, but I never use my MTB shoes when I want to go to the supermarket, and now I'd like to just put some kind of pedal on with either clips (without using the straps) or maybe those BMX pedals that seem to be popular with the kids.

A while ago I purchased a $10 set of platform pedals from the bike shop, but when I went to mount them I discovered that the axle is too small for the crank. I'd had no idea that that would happen. I've since tried to figure out axle sizes online, but my searches have been fruitless. Would anyone be able to point to some specifications that would indicate what pedals (aside from the standard clipless type we in this forum tend to use) will fit on a Campy road crank?

noodle soup

Yes. Most modern BMX pedals are 9/16" spindles, so they'll work fine.

Cheap children's bikes use 1/2" spindles.

Darth Lefty 

There's two sizes of pedal thread*. Nearly all 3-piece cranks use 9/16 x 20 tpi. One piece cranks and some BMX cranks use 1/2 x 20 tpi. Road pedals basically only come in the one size, but platform pedals are available with either. You just need to get the right one this time.

* there are a few weird exceptions but don't worry about them

Bike Gremlin

I'm using "BMX" style pedals on the road bike for the same reason - shoe convenience. Love it. Very good grip.

These are the ones I use:

https://www.amazon.com/gp/product/B00...l&tag=bikeg-20


Cheap in Europe where I bought them:
BBB MountainHigh BPD-32 Platform Pedal - Bike24


Shimano Saint pedals (very good quality):


Amazon.com : Shimano Pd-Mx80 Platform Pedals : Bike Pedals : Sports & Outdoors

rousseau

Thanks for the replies, this is good to know. I'm a bit surprised that the local bike shop sold me those pedals in the first place, as they know I'm a roadie and they knew what bike they were going on, but then again they're into mountain biking almost exclusively and tend to do things a slap-dash fashion. Oh well.

noodle soup

I'm sure your shop didn't notice the spindles were 1/2". These days only very low end BMX bikes use 1-piece cranks, so it probably didn't occur to them that they were 1/2 spindles.

Jaredn

Not really helpful to the OP... I have a ton of scars on my shins from racing BMX as a kid, those pedals really rip through flesh like a hot knife through butter ....