Old cranks removal

flickerx

Oh fellow boardsers, please bestow on me your wisdom or a link on how to get these cranks off. No idea what they are or how they work. Its for someone here once I've taken it out, someone up in the 'parts for trade' thread, cant remember who now though. Also any tips/advice on getting the bb out would be welcomed...

Drive side:





And the non-drive side:





Thanks!

Morgan

They're cottered cranks. I've never worked on them, but Sheldon has:

http://www.sheldonbrown.com/cotters.html

Hermy

These links might help with the bottom bracket.

Firstly Sheldon says this: http://www.sheldonbrown.com/tooltips/bbcups.html

And secondly Parktool say this: http://www.parktool.com/repair/readhowto.asp?id=93

I hope this is relates to your bike.

EDIT: I don't know if you've seen the link to bicycletutor.com mentioned in another thread but you might find useful info there too.

stuf

tapered cotter pins need a good whack with a hammer on the narrow side - when I were a lad all bikes were like this

studiorat

stuf wrote: »

tapered cotter pins need a good whack with a hammer on the narrow side - when I were a lad all bikes were like this

+1
none of yer fancy crank extractors here!
A piece of wood between hammer and pin might be wise though!
bottom bracket's going to be ball bearingtastic too...

psycholist

stuf wrote: »

tapered cotter pins need a good whack with a hammer on the narrow side - when I were a lad all bikes were like this

http://www.youtube.com/watch?v=JomHWt7p6-c

thesunwashot

Well I inherited this frame and a good bash with a hammer worked a treat for removing the cranks.

If anyone has a fetish for some old skool cranks let me know and they are yours.

flickerx

I have another one with cottered cranks - might get you to help me with it?

Glad to hear you managed to remove them - that's a decent enough frame.

My head still hurts after Holyhead... there's nothing to do there except get drunk.

thesunwashot

flickerx wrote: »

I have another one with cottered cranks - might get you to help me with it?

Glad to hear you managed to remove them - that's a decent enough frame.

My head still hurts after Holyhead... there's nothing to do there except get drunk.

Sorry I missed this reply. I'll defo help you with the crank removal. Let me know...

I was resurrecting this thread because although the cranks were easy enough to remove I've been having a real battle getting the fixed cup off.

I tried various spanners with absolutely no luck at all before resorting to the advice of the bearded one.

This page had the solution:

http://www.sheldonbrown.com/tooltips/bbcups.html

I built up a tool like the one shown in Fixed Cup Tools section.

The fixed cup was screwed in so insanely tight that the first bolt sheared.

I came back to it tonight with a bigger bolt/nut/spanner and after applying a lot of force to it, it finally came loose.

I guess these cups are so outdated now that we won't have to deal with them very often but if you ever need to shift one follow Sheldon's advice...