Search found 8 matches
- Thu Nov 21, 2019 2:46 pm
- Forum: Gunsmithing
- Topic: Best choice of steel for color case hardening?
- Replies: 10
- Views: 27893
Re: Best choice of steel for color case hardening?
Years ago, an "Old Timer" told me to use chicken bone, broken into the smallest pieces possible. Worked rather well, but as time went on I learned that bone is loaded with Phosphors, which makes steel brittle. The brittleness would only be on the surface, but that's where cracks start. Is ...
- Thu Nov 21, 2019 2:05 pm
- Forum: Gunsmithing
- Topic: rotary table
- Replies: 10
- Views: 25566
Re: rotary table
Our 20" Troyke lives on a roller table when not in use. When needed, table rolls over to machine (which ever one) and machine table is adjusted so that heights match. Then rotary is slid across the gap, wiping under side in process.
- Wed Mar 27, 2019 8:42 am
- Forum: I.C. Engines
- Topic: Piston Knurling
- Replies: 19
- Views: 55005
Re: Piston Knurling
I made a threaded device to go inside a piston skirt (aluminum skirt) that can force more ovality into it, and thereby increase its "size."
Have also made pistons by turning the heads from aluminum bar stock, and heliarc welding skirts on.
Have also made pistons by turning the heads from aluminum bar stock, and heliarc welding skirts on.
- Fri May 11, 2018 3:07 pm
- Forum: Lathes
- Topic: Looking to buy a new Lathe need some advice.
- Replies: 16
- Views: 13363
Re: Looking to buy a new Lathe need some advice.
I have almost eliminated the "rattle" of cutting teeth completely off gears by mounting two carbide tools, one above the other, and spaced so that one is fully into the cut, while the other is on the space between teeth. These were gears more or less 20" in diameter with 4 DP teeth. A...
- Fri May 11, 2018 2:44 pm
- Forum: Lathes
- Topic: Chuck mounting helper
- Replies: 14
- Views: 11393
Re: Chuck mounting helper
We have done the same thing as Earlgo on one of the large lathes, the other biggie has a swinging arm post crane with an electric hoist. Another heavy thing to move around is the vise on one of the 16" shapers. A short overhead rail with a hoist picks this up with an eyebolt, screwed into the m...
- Tue Dec 19, 2017 8:15 pm
- Forum: I.C. Engines
- Topic: The Duke Engine (VERY COOL)
- Replies: 6
- Views: 23432
Re: The Duke Engine (VERY COOL)
The downfall of most of these rotary engines is lubrication between the valve plate, and whatever rotates against it. Enough lube to prevent seizure and you get excess oil consumption, if not, seizure eventually occurs. Back on the 60's, I made some prototype parts for the inventor of a variable com...
- Mon Apr 10, 2017 9:43 am
- Forum: The Junk Drawer
- Topic: 2005 Ford power stroke
- Replies: 21
- Views: 10715
Re: 2005 Ford power stroke
One thing to watch for in that whole series of Internationals-- the IDI 6.9's,7,3's and all the iterations of Powerstroke is the blocks tend to get pinholes in the bores going into the water jackets if the DCA concentration in the coolant isn't maintained. Then it's sleeve time (and also to take out...
- Sat Apr 08, 2017 8:32 pm
- Forum: I.C. Engines
- Topic: Ignition Polarity
- Replies: 33
- Views: 65456
Re: Ignition Polarity
Month old subject here, but I just joined and am reading a lot of things of interest to me at the site What I used to hear, back when dragster people and the like were the only ones looking for that last little bit that they could get out of an engine, was that the center electrode of the plug, bein...