Removing stripped cranks

[john_p]

Suntour cranks, threads are totally stripped.

No idea how, the crank puller was tightened up as humanly possible before moving the inner! I wonder if the inner was not the right size to fit through the gap.


How do I remove them?

[custardkid]

suntour cranks are renound for being soft...

Option 1:

heat with hot hairdryer or paint stripping gun. use hammer on the back of the crank. if you are careful the crank will not be damaged too much.

Option 2:
get a claw like tool from machinemart... i think its used to remove oil filters on cars??
this hooks onto the spider / chain rings and the puller pushed on the axel.
the crank will be mullered!

custard

[neilski]

Providing you can find one the right size to fit behind your cranks, this type of ball joint splitter should do the trick.



If not, a hacksaw & new BB axle may be your only option then use a hammer & the right swearword to extract the end of the BB axle from the crank at your leisure.

[darkyoung1000]

I had something similar happen to me (but not with Suntour cranks). I ended up using a hacksaw blade to cut a v shaped notch in the section of the crank around the bottom bracket spindle and then used a large screwdriver as a pry to make the small remaining section fail....

Good luck!

Cheers,
Tom

[magpie215]

2 leg or 3 leg puller