L&S Powerturn Compound Swivel

Ja_cain · Jul 21, 2021

I posted this a while back, but I have decided I want to just make a new centering pin instead of having this one ground. Few questions though. What material would be best and how much clearance would you leave on the compound side? Thanks in advance for any advice.

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Garwood · Jul 21, 2021

What's wrong with it?

I would make it from 4340PH and leave a couple thou clearance. I wouldn't want it a very tight fit. It needs to turn easily and hopefully retain a bit of oil or grease so it doesn't rust.

Ja_cain · Jul 21, 2021

Garwood said:
What's wrong with it?

I would make it from 4340PH and leave a couple thou clearance. I wouldn't want it a very tight fit. It needs to turn easily and hopefully retain a bit of oil or grease so it doesn't rust.

At some point they replaced the compound base that has a .985 I'd hole. The pin is 1". I found it pressed below the surface when I removed it. My buddy and I were thinking 4340 too. Thanks for the advice.

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4GSR · Jul 21, 2021

You're over killing it!!!! It doesn't have to be any greater in strength than it's mating material. In this case, cast iron.
The pin in the L & S I had was pretty much "butter" when I cut on it. Just use whatever you have on hand. Ken

Ja_cain · Jul 22, 2021

4GSR said:
You're over killing it!!!! It doesn't have to be any greater in strength than it's mating material. In this case, cast iron.
The pin in the L & S I had was pretty much "butter" when I cut on it. Just use whatever you have on hand. Ken

No kill, like overkill. Lol! I found a piece of 416 1.25" stock laying around. I'll make it out of that. Thanks!

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L&S Powerturn Compound Swivel

Ja_cain

Cast Iron

Garwood

Diamond

Ja_cain

Cast Iron

4GSR

Diamond

Ja_cain

Cast Iron

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