Cretin

ellieb

Yes, I mean me.

I've got a truvativ elita crankset. It has a crankbolt inside a self-extracting bolt on the LHS. I've managed to strip the thread on the crank so that the self-extractor just gets pushed out by undoing the crankbolt. Anyone any ideas about how to get the crank off. It's really tight. sigh
:oops:

broachboy

Is that an isis style crank or a square taper :?:

TBH you will find that if the crank bolt is removed and you take it out for a ride the arm will soon free up. That does mean you will have scrapped the arm, as the softer material deforms against the harder spindle, but it sounds like it ain't much use anyway now

ellieb

It's the ISIS one, I'll try taking it for a ride, as long as it doesn't b*gger the spindle

broachboy

...are you planning to replace the crankset or try to reuse it :?:

For a less damaging effect on the spindle, I would be tempted to hacksaw a slit across the top of the arm, down to the spindle diameter and glently prise it open with a large screwdriver whilst glently tapping the arm off with a mallet or hammer

ride_whenever

kettle of boiling water and smack it with a soft faced mallet.

then use the boiling water to make tea

Nuggs

lfoggy

If you have some taps you could select a size a mm or so larger than the stripped hole, cut a new thread and then insert a bolt and pull the crank off in the usual way. You might even be able to save the crank.
Taps are quite cheap on ebay. If your original bolt was 8mm then get a set of M10 taps and an M10 bolt....