how do i....
 

how would i remove cranks like these?

Ya need a crank puller. Tell them you want the "old school" one.

thank you sooooooo0 much

So, being a crank n00b, is that a one-piece?

No, that looks like a regular three piece crank, old style with a nut that holds the crank onto the taper, instead of a bolt that threads into the taper. I'll even bet that it was a 14mm nut, and that its an SR crank.

I've got the Nashbar crank puller, which is nice, it pulls all the major types of three piece cranks, and even includes a dust cap remover, and a 14/15mm socket. Handy dandy.

One piece cranks require no puller, you just use a big wrench to unscrew the lockrings on either side, unscrew the cones, and then just ease the baddie out. Its part of what I like about working on my crappy bikes and mutant bikes (which are usually made from crappy bikes), you don't need anything more than screwdrivers and a big ole crescent wrench to work on them. Hammers are useful too. :)

peace,
sam

I like 1-piece cranks for all the same reasons. They're simple and rugged.

If I built frames only for myself, they'd all use 1-piece cranks.

Yeah, I was talking to Mike Flanigan awhile back and he said he'd moved to Ashtibulas on his heavy cargo bikes for durability after doing the first generation with three-piecers.

OK, thanks for the clarification.

Ya gots to remove the pedal(s) first, though.

You don't need to remove the pedals before you start, just before you finish. ;) Yes, I've had one piece cranks half off before I realized I had forgotten to remove the necessary pedal. Oh well.

peace,
sam

I guess I wasn't clear enough.

Ya gots to remove the pedal(s) before the crank comes out, though.

Hey man, I bared my soul before you, and admitted my faults. Then you smack me down like the dog I am, instead of extending a hand to lift my pitiful soul to the land of the living.

I cry now.

peace,
sam

Uh. Ok.

what is this??

zing! score to ryan_c (who better get his uncollective ass out to the velo again this weekend)

Its a terrible, seedy place, look away, look away.

Oh, and remember that I actually DID answer the OP, and even a secondary question, unlike the naysayers who know only criticism. ;)

peace,
sam

phidauex, fear not the critics -- they know not what to do. that's why they're critics. talk's cheap.
you give good answers, dude.

I am not understanding why you would need to remove a pedal(s) to remove old style cranks. But then again, the frst time I tried to remove a BB (before I even knew they were called BB's) I used the good ol' fashioned steel mallet on the BB and obviously smashed it to the point of non-functional.

Could one of you explain why you need to remove the pedals?

With one piece cranks both crank arms and the axle are the same piece of metal.

http://www.goldstarind.com/gs13.jpg

The pedals are too big to fit through the bb shell.