Captain Stupido
Senior Retro Guru
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Midway through doing some upgrades on this Lana'i I've got stuck.
The crank puller stripped the threads out. I bravely/stupidly tried it a second time which has thoroughly knackered them.
So far I've tried hot air gun on cranks and whacking repeatedly from rear with hammer...no dice. Used a punch/breaker bar and also hit it directly. It's going straight in the scrap pile if I manage to get it off.
It's hard to be precise with the hot air gun, especially as the cranks are partly plastic (& steel). Square tapers and cranks themselves are alloy so I'm hopeful that heat will be the solution. Thinking try a blow torch next so I can direct the flame straight at the middle of the cranks.
Other possible issue is bike stand wobbling when I hit it and absorbing impact. Thinking next move (other than the blowtorch) is to support the bike more rigidly. Not sure what the best way is to do that.
Plan B I suppose is cutting the cranks but this isn't straightforward due to the steel parts. What about drilling around the edge of the square taper?
Given up for today as I've hurt myself.
The crank puller stripped the threads out. I bravely/stupidly tried it a second time which has thoroughly knackered them.
So far I've tried hot air gun on cranks and whacking repeatedly from rear with hammer...no dice. Used a punch/breaker bar and also hit it directly. It's going straight in the scrap pile if I manage to get it off.
It's hard to be precise with the hot air gun, especially as the cranks are partly plastic (& steel). Square tapers and cranks themselves are alloy so I'm hopeful that heat will be the solution. Thinking try a blow torch next so I can direct the flame straight at the middle of the cranks.
Other possible issue is bike stand wobbling when I hit it and absorbing impact. Thinking next move (other than the blowtorch) is to support the bike more rigidly. Not sure what the best way is to do that.
Plan B I suppose is cutting the cranks but this isn't straightforward due to the steel parts. What about drilling around the edge of the square taper?
Given up for today as I've hurt myself.
