Cranks extraction when thread f*cked

[Hilts]

Right, I can't get one of the cranks off a bike as the thread in the crank has gone so I can't use the usual crank extractor tool..

So, how do I get it off ?? Hammer ??

 

[PHeller]

If the threads are trashed its probably better to junk the crank itself. Cut it off.

 

[JeRkY]

something along the lines of:

A pully/fly wheel puller.
Ive known a few bike shops to use similar on sticky cranks.

 

[andy.l]

ride it with the bolts out,soon come loose

 

[Bikeshopowner]

We use a tool called a BALL JOINT SEPERATOR to get cranks off, does a quick easy job - every time. Just don't put them back on or you'll have to do it again! :shock:

 

[orange71]

cut it off with hacksaw. takes a little while (only soft alloy) but does the trick.

 

[cchris2lou]

hacksaw or ride it .

 

[haggis]

Cranks

ride it with the bolts out,soon come loose

Sound advice

 

[jango]

If you don't want to keep any of the bits....angle grinder through the BB axle :twisted: I've done this on a couple of quality ebay purchases that 'included' a BB and crankset :roll: it's the fastest solution.

 

[ridevintagemtb]

If its the driveside crank that wont come, take off the chainrings and see whether you can get a wrench on the BB cup. Unscrew the BB cup from the frame with the crank attached.