What tool for this bottom bracket?

Now all sorted thanks to mechanical_vandal - I unscrewed to top bit of my crank extractor and that did the trick

All,

I'm fixing up an old school Motobecane bike for a workmate and I've got a BB/crank arm question.

The bottom bracket has threads coming out of the spindle, very much like the one pictured below.

Since the threads poke out through the crank arms, you can't really fit a standard crank extractor tool in.

The question is... Is there a specific tool or should I just hammer the shit out of the old chainset to take it out?

Cheers

Vince

Now all sorted thanks to mechanical_vandal - I unscrewed to top bit of my crank extractor and that did the trick

Since the threads poke out through the crank arms, you can't really fit a standard BB extractor tool in.

If you mean crank extractor, yes you can, just unscrew it a bit further.

If you mean bb tool, a big adjustable spanner should fit both sides or there's a specific tool for at least one side - Park HCW4 for instance.

If you mean crank extractor, yes you can, just unscrew it a bit further.

If you mean bb tool, a big adjustable spanner should fit both sides or there's a specific tool for at least one side - Park HCW4 for instance.

I did mean crank extractor - I have one of these Ice Tools with a silly bit at the end of them.
I'll take it off and see how I go, I think i'm not going to have enough 'thread' that makes any sense.
Pictures will come too!

Now all sorted thanks to mechanical_vandal - I unscrewed to top bit of my crank extractor and that did the trick.

This type of BB was common amongst early cheap square taper chainsets. Rather than bolts to hold the cranks on, it used nuts. I had a bike with a SR chainset like that in the 70's. As said above, I just used a standard crank extractor screwed out a bit further.

if you're game just ride around for a bit and the cranks will fall off :)