[modeleng] Re: new website
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Fri, 23 Nov 2007 07:10:08 -0800 (PST)
I spent a good portion of yesterday afternoon looking
over Patricks new website. He has done an excellent
job of it and writes in English better than I do! It
is well worth your time to look it over, especially
the old photos of "how it was" when the machining
world was young!!
Al Messer, in cold, damp mid- Tenn. Hey, youse blokes
would feel right at home!!
--- Jesse Livingston <fernj1@xxxxxxxxxxxxx> wrote:
> Tony,
>
> Black powder comes in several granulations as you
> probably know. The ffffg
> being the finest , fastest burning and is intended
> for pistols. Muskets
> used ffg as a rule and generate a slower combustion
> so that should work just
> fine. I still would fire the thing with a heavier
> ball and charge
> accompanied by a looooong fuse the first time. I
> would light the fuse and
> go around behind the barn to admire the rutabaga
> blossoms until it fired the
> first time. It sounds like it will hold, but with
> cast iron, one is never
> sure.
>
> My 1860 Ordnance manual (US) says that the large
> cast iron Columbiad
> seacoast cannons would burst, but no one could
> predict when it would happen.
> Sometimes they burst on the third shot, but the
> author knew of one that had
> fired over 1,300 times and was still in one piece.
> I would imagine that
> artillerymen kept a tight you know what every time
> they fired one of the
> things, because it WAS going to burst sooner or
> later. He went on to show
> via some drawings exactly why it would burst and
> showed a design that was
> supposed to be as perfect as possible against
> bursting. The barrel had to
> be perfectly rounded with no ornamental rings cast
> on it nor should it have
> a cascable or its trunnions cast as part of the
> barrel. Trunnions were to
> be made of bronze and fitted to the barrel with a
> sort of bridle like
> affair. Guns made to this pattern proved to be
> pretty near burst proof,
> even more so than the Brooke style with shrunk on
> wrought iron bands like
> the "Long Cecil" breech loader of Boer War fame.
>
> Jesse, the former CSA Artilleryman and waver of
> Confederate flags when
> possible.
> I have a Southbend Colonial field cannon at 1:10
> scale, in cast iron with a
> stainless steel liner, and it weighs a lot less
> than 17lbs! It still have a
> .600" bore though, so that I find 20-guage shotgun
> solid ball and wads
> "would be" ideal ..... but I didn't say that! <VBG>
> 70 grains of black
> powder goes well in a .577" Enfield musket, and so
> should be about right
> for
> this cannon of mine. Weight for weight, for
> similar recoil, a charge of
> 120 - 140 grains would be about right for a 17lb
> barrel, so about an inch
> bore perhaps?
>
> I would stay away from shotgun cartridges though,
> as they have different
> impulse / pressure curves due to their nitrocelluse
> based smokeless
> powders,
> unless you use a steel liner, which then becomes
> the barrel and chamber
> with
> the brass tubing just there for show ....
>
> Tony.
>
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