Crank thread repair.....

[Lightning Performance]

Shooting from the hip here. Always wanted to try splitting common nuts and hardening them like a split die.

Wwas able to cut crank threads with a jewelers tri-file many years ago. The black tool steel thread files of then would not cut. A well used hacksaw blade can work in larger threads. Smooth action and a shallow bite. Try finding a small coping saw blade for steel or a tiny key hole blade. Our best fix then was a split die flame hardened in Acetylene carbon and quenched like spring steel in hot oil. Them babies cut.

 

[Lone Wolf]

M10x1........right.....?

Put on a pair of reading glasses and look at it closely with a file or gauge on it or run a tap through the nut gently finger tight only only.

 

[Lone Wolf]

Shooting from the hip here. Always wanted to try splitting common nuts and hardening them like a split die.

Wwas able to cut crank threads with a jewelers tri-file many years ago. The black tool steel thread files of then would not cut. A well used hacksaw blade can work in larger threads. Smooth action and a shallow bite. Try finding a small coping saw blade for steel or a tiny key hole blade. Our best fix then was a split die flame hardened in Acetylene carbon and quenched like spring steel in hot oil. Them babies cut.

I bet it is all mushroomed and bent over a little.

 

[Adirondackstihl]

Only shroomed in one spot.
A small spot

 

[Lightning Performance]

So what the problem? My crank has a mushroom on the end to. I fail to see the problem and will continue to do so.

he said Shroomed...

I bet it is all mushroomed and bent over a little.

I'm not touching that wif a ten foot pole.

 

[Lone Wolf]

Only shroomed in one spot.
A small spot

Well if you can fix that then you can get a regular die on there

 

[Adirondackstihl]

Well if you can fix that then you can get a regular die on there

Sure
If I had a regular die.

 

[Lone Wolf]

Sure
If I had a regular die.

Whats size? M10x1.00?

 

[Adirondackstihl]

Whats size? M10x1.00?

Yessir

 

[Al Smith]

 

[Adirondackstihl]

View attachment 85833

I know I know I know.......

 

[huskyboy]

I need to get a plastic hammer as well. My brass hammer Fd up my threads even more that were already screwed on a 394 crank just recently , coincidence huh?

 

[Lightning Performance]

Have you guys ever heard of a block of wood? just askin' . . .

 

[Adirondackstihl]

Have you guys ever heard of a block of wood? just askin' . . .

GFY

 

[angelo c]

View attachment 85833

Al, please don't take this the wrong way.....BUUUUUUT

that looks like a Harbor Freight hammer....are you kidding me....that's a cheap Chinese knockoff of a real hammer.
you gotta know better then to use a cheap hammer on an expensive tool....


yup....just bustin balls....

 

[paragonbuilder]

I use a heavy tapered pin in the dimple for this reason, can't bugger the threads


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[Canadian farm boy]

Soooooo, who wants to see my hammer?

 

[Adirondackstihl]

Soooooo, who wants to see my hammer?

You've seen one, you've seen em all

 

[Adirondackstihl]

I use a heavy tapered pin in the dimple for this reason, can't bugger the threads


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Good idea Dan

 

[Al Smith]

Oh Lawdy I've got big hammers,little hammers,rawhide hammers,lead hammers ,brass hammers , hammers ,hammers hammers .----I've also got flywheel pullers