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??

https://en.wikipedia.org/wiki/Internet_forum

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.

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

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