xetaprime

Good Morning! Anyone know what the difference is between the campagnolo strada and pista crankset other than the 1/8 chainring? I know the spider underside is smooth and not ribbed for the second ring. Other than that?

fietsbob

You got an older one (pre 67) from the appearance.. a 151 bcd, vs the later 144, to present..

which has become the current track crank typical bcd..
[42 t and larger,] (151 cant take a 42t)





....

xetaprime

The pictures are from an old auction on ebay. I believe the auction said it was 144 bcd. But the reason I wonder is I bought a track frame with a campy headset/bottom bracket yesterday and it needs a crankset. Are the crank arms the same do you think? Can I use a Nuovo Record with a short BB on a track frame? I've only dealt with NR doubles...

fietsbob

Dura Ace Track Uses a 144 bolt circle too.. and Sugino

you can try it..

you can find people posting PDF copies of old Campag parts catalogs, online, too..

JohnDThompson 

Record road and track crank arms are made from the same forgings; they're just machined differently after they're forged.

You can use a single ring mounted on the outer position on a road arm with a track bottom bracket, provided the mounting plateau for the inner ring clears the chainstay. If it doesn't, either use a longer spindle or file off the inner ring plateau to get the clearance. If you need to mount a second, inner ring, you'll likely need a longer spindle.

xetaprime

Thanks. They looked the same but wasn't sure. I'm not opposed to filing off the ridges. I that wrong of me

Steamer

I that photo I think I see the typical stress riser crack already forming at the junction of the spider and the arm.

Mine had those and I took a chainsaw file to it to remove the crack and enlarge the radius of the junction. Then I polished the area. That was 4 years ago. Cracks haven't come back yet.