Torch Hardening an old Sprocket

[Minimichael]

I'm no metalsmith, but I asked online if anybody hardens their chain drive sprockets and Google said hell yeah and I figure I can make fire, so here we go.

This used Honda style sprocket has the right hole configuration for my build, and while the teeth weren't too broken up, their troughs and edges appeared really warped and smooshed like it had seen a lot of riding and chain contact.

I'm thinking the metal may be soft, too, as it's been quite easy to reshape and file. So I've continued to prep and smooth it for hardening, and tempering, and it's future life on my Arctic Cat mini.

Here's a few pics of where I'm at right now. I'll be sharing more as things heat up

 

[f4radar]

As Doug says "It will Keal"

 

[sparkwizard]

Buddy, if you found one that fits, order a new one.
Don't harden a worn out one.

 

[Charles S]

Get another sprocket, keep that one as a throwing weapon.

 

[Minimichael]

Who said anything about worn out?

 

[Minimichael]

Buddy, if you found one that fits, order a new one.
Don't harden a worn out one.

Nah, I think this one's just a sleeper. Besides, I have a bin of old Honda parts and there's a handful of other sprockets I could still triage. Call me cheap

 

[mchadsey1]

Nah, I think this one's just a sleeper. Besides, I have a bin of old Honda parts and there's a handful of other sprockets I could still triage. Call me conservative

I get it this is for testing purposes only. A sacrifice for science.

 

[Minimichael]

I get it this is for testing purposes only. A sacrifice for science.

Plus I want to find out if this tooth count is going to be good for the build.

 

[Minimichael]

Buddy, if you found one that fits, order a new one.
Don't harden a worn out one.

I do see what you mean now, @sparkwizard. The teeth are worn. For the life of me, I never knew why some sprockets had that wavy look! I'll be looking at new sprockets for my new build. But I'll still harden the bad one, for science! And maybe even the new one, too.

**** Intermission ****

 

[Bird Brain]

Be right on if you had an induction heater head in the profile of that tree top in that starry night image you posted. Thad "get err done" proper. 2.5 sec. to critical Temp, flood it 4 sec. followed by about 1 sec. reheat and flood again. Dinner is served!

 

[Minimichael]

Be right on if you had an induction heater head in the profile of that tree top in that starry night image you posted. Thad "get err done" proper. 2.5 sec. to critical Temp, flood it 4 sec. followed by about 1 sec. reheat and flood again. Dinner is served!

Lol. You kids and your modern technologies... Speaking of dinner, I was thinking a propane torch until orange, if possible, followed by a stint on the Weber. Maybe quench it in a nice lemon butter.