Search found 733 matches

by rudd
Mon Jan 03, 2011 12:56 pm
Forum: General Discussion
Topic: Milling long stock between centers
Replies: 17
Views: 5279

Re: Milling long stock between centers

Well, I knew what you were making anyway! Somewhere in central Texas, there is a .22 with an octagonal barrel, probably buried inside the tree my dad leaned it up against one day when he was a boy. I thought about it some more, in a production environment, a horizontal mill with ganged cutters could...
by rudd
Sun Jan 02, 2011 1:27 pm
Forum: Live Steam
Topic: Cylinder/port/piston design
Replies: 20
Views: 5354

Re: Cylinder/port/piston design

Fred, thanks so much. I've sent you a PM. Richard, they say we do things a little slower here in the deep south, and now I know this is true! I'm building a model of a logging mogul in 2 1/2". 20 MPH was probably about tops for the prototype! I've been 20 mph in a full size speeder on good trac...
by rudd
Sun Jan 02, 2011 11:14 am
Forum: General Discussion
Topic: Milling long stock between centers
Replies: 17
Views: 5279

Re: Milling long stock between centers

I think you're going to play hob drilling a hole that long straight, but if you can, and keep it in the center of the stock, the octogon would be the way I would go. Then you could just clamp it to the table, make a face, flip it over, make another. Then use some of those "long stock" vise...
by rudd
Sun Jan 02, 2011 9:23 am
Forum: Live Steam
Topic: Cylinder/port/piston design
Replies: 20
Views: 5354

Re: Cylinder/port/piston design

Mike, the 300 FPM is the piston speed, not loco speed. I've run that number several different ways (including the formula in Modern Loco Construction) and the answer remains the same. I actually get 275 FPM, but I'm using 300 for a little margin. Dick,I looked at RR supply - 1.5" bore by 3"...
by rudd
Sat Jan 01, 2011 11:50 pm
Forum: Live Steam
Topic: Cylinder/port/piston design
Replies: 20
Views: 5354

Cylinder/port/piston design

I'm designing my own cylinders, it's something I cannot buy, they will be sloped, and bigger than the 1.25" bore ones out of CO. I'm going to fabricate them out of cast iron and furnace braze the cylinders to the steam chest/valve chest. All openings will need to be drilled or milled since I am...
by rudd
Wed Dec 29, 2010 11:25 am
Forum: Live Steam
Topic: compression versus flare
Replies: 18
Views: 7489

Re: compression versus flare

In my research, I ran across these folks: http://www.hoseandfittings.com/ They stock small sizes (sizes are designated by 1/16's), tell me they have no minimum, and will ship however you like. They have a great variety of types. Seems much better than MSC. I have not bought from them yet, but though...
by rudd
Wed Dec 22, 2010 12:45 pm
Forum: Lathes
Topic: How about a south bend 9" as a first lathe?
Replies: 17
Views: 11223

Re: How about a south bend 9" as a first lathe?

You did well avoiding the crapsman lathe. You also did better getting the bigger machine.
by rudd
Tue Dec 21, 2010 9:51 am
Forum: Lathes
Topic: How about a south bend 9" as a first lathe?
Replies: 17
Views: 11223

Re: How about a south bend 9" as a first lathe?

At the risk of restarting the eternal debate (new import v. used domestic) - I am going to state something that is simple physics. Heavy is good. Less chatter, better finish. Old US Ahrn tends to be heavier built than imports. For a beginner, belt drive is good. Belt tends to slip before destroying ...
by rudd
Mon Dec 20, 2010 11:22 am
Forum: Lathes
Topic: How about a south bend 9" as a first lathe?
Replies: 17
Views: 11223

Re: How about a south bend 9" as a first lathe?

If it's 60's vintage, it would not have change gears I wouldn't think, it would have a quick change gear box (or not). There are three models of the 9 I know of, A, B and C. See the left side of these machines. http://www.machinemanuals.net/web_pages/south_bend_9.htm Here's some more light reading: ...
by rudd
Thu Dec 02, 2010 12:21 pm
Forum: General Discussion
Topic: sellers drill grinder- vernon horz mill
Replies: 2
Views: 1775

Re: sellers drill grinder- vernon horz mill

There is a Sheldon Lathe group on Yahoo groups - you need to have a yahoo email address to join. They have manuals for the early and late versions of that mill in the files section. You may find, as I did, that your mill has characteristics of both. The early model had a single table slot, the later...
by rudd
Mon Nov 29, 2010 11:14 pm
Forum: General Discussion
Topic: Countersinks - Number of Flutes?
Replies: 6
Views: 8495

Re: Countersinks - Number of Flutes?

I've c'sunk a fair bit of AL - think F-111. 2 flute integral pilot countersinks in a microstop or "countersink cage" as they are sometimes called. As long as the hole is right, and the material thick enough to leave the pilot something to ride in, no worries. Thin stuff required c'sinking ...
by rudd
Wed Nov 24, 2010 10:36 am
Forum: General Discussion
Topic: Making and/or iinstalling a bushing?
Replies: 7
Views: 3358

Re: Making and/or iinstalling a bushing?

http://buntingbearings.thomasnet.com/item/-font-color-black-continuous-cast-cored-bars-bolt-/-font-color-black-c93200-sae-660-font-bronze-bar-2/b932c012020? Looks like it's already slightly oversize OD for press fit. Remember the hole is going to shrink when you press it in, figure an equal amount t...