Help, making new pedel shafts for trans O-1 drill rod

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Model T Ford Forum: Forum 2014: Help, making new pedel shafts for trans O-1 drill rod
Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Tuesday, October 21, 2014 - 12:09 pm:

Very novice turner here. I have the turned the shaft down and threaded the shaft for the nut. The first one I did looks like heck, the threads look ruff. I used an adjustable die expanded all the way out for the first cut with fluid. Is the O-1 too hard and if so what other material should I use that will take threads better and still have a good surface?
Thanks


Top of pagePrevious messageNext messageBottom of page Link to this message  By G.R.Cheshire on Tuesday, October 21, 2014 - 12:18 pm:

When I cut thread in a hard alloy I do it the old fashioned way using the threading ability of my lathe then I can take smaller "bites" takes longer but the end product is worth the effort.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Richard Gould on Tuesday, October 21, 2014 - 02:45 pm:

Try using Ultra-Machinable 12L14 Carbon Steel available from McMaster Carr. I used some for brackets on an aftermarker pan support and glad I did. Still hard to turn a die but possible and the threads looked good.


Top of pagePrevious messageNext messageBottom of page Link to this message  By John Gelfer, Milwaukee WI on Tuesday, October 21, 2014 - 03:32 pm:

These look like early style rear spring shackles. I tried to find them in the Snyder's site, but no luck.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jerry VanOoteghem on Tuesday, October 21, 2014 - 04:57 pm:

Mark,

Yes, O-1 is too tough. Richard's choice of 12L14 is a good one.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ted Dumas on Tuesday, October 21, 2014 - 05:53 pm:

12L14 Steel has the properties of mild steel. I think for pedal shafts, Stressproof free machining steel would be a better choice. It has a yield strength of 100,000 psi.

Stressproof steel has a machineability of about 83% of 1212 Steel.

O-1 tool steel has a machineability of about 25% of 1212 Steel.

12L14 steel has a machineability of about 160% of 1212 Steel.

1212 Steel is the reference standard for 100% machineability.

None of the free machining steels:Stressproof, 12L14 or 1212 steel should be welded because of the high sulfur and phosphorus content.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Ken Kopsky, Lytle TX on Tuesday, October 21, 2014 - 07:27 pm:

And, 12L will look old in about a week since it will rust if you look at it twice. :-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mark Gregush Portland Oregon on Tuesday, October 21, 2014 - 09:09 pm:

I will give the 12L14 a try. Thanks again.


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