[modeleng] Re: Stuart Triple Expansion Engine
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Wed, 15 Dec 2004 06:24:30 -0800 (PST)
Sounds like a good plan to me! Good luck with it and
best wishes.
Al
--- Jeff Dayman <jeffdayman@xxxxxxxxxxxx> wrote:
> Hi Al,
>
> I only carve out what I have to, and have left the
> rest of the material
> undisturbed. For example, on the roller cylinders I
> don't plan to relieve
> the area shown cored under the flanges and around
> the drain cock pads. If at
> some point I wanted to do so, I'd do it freehand
> with a die grinder to make
> the appearance of a cast surface.
>
> I'm going to lag the cylinders anyway, so it doesn't
> matter what's under the
> sheetmetal lagging, cored casting or not.
>
> As to the valve faces, small slot drills make short
> work of them. Port
> drilling is the same as for castings.
>
> One technique I plan to use for the roller cylinders
> to get the outer wall
> plan view profile correct is to bore the blank and
> mount it on a mandrel. I
> will then put this mandrel between a set of
> temporary centres horizontally
> on a mill table fixture, with lockscrews to hold it
> in a given position for
> each pass. At one end I will mount a sheetmetal
> template of the correct
> profile. I'll then mill back and forth, rotating the
> blank, mandrel and
> template assembly after each pass, until the
> cylinder emerges.
>
> Hope it works out.
>
> Best regards, Jeff Dayman
>
>
> ----- Original Message -----
> From: "Allen Messer" <al_messer@xxxxxxxxx>
> To: <modeleng@xxxxxxxxxxxxx>
> Sent: Tuesday, December 14, 2004 8:25 AM
> Subject: [modeleng] Re: Stuart Triple Expansion
> Engine
>
>
> > Jeff, do you carve your cylinders, flanges and
> all,
> > out of the solid like Wilfried did the cylinders
> for
> > his "Two Times Engine? If you do not, how do you
> > fabricate the flanges and valve faces? I have the
> > same problem in affording to feed my hobby!
> >
> > Al Messer
> >
> > --- Jeff Dayman <jeffdayman@xxxxxxxxxxxx> wrote:
> >
> > > Hi Lee,
> > >
> > > Personally I gave up on castings a while ago due
> to
> > > the cost. I don't doubt
> > > they are expensive to make and there's a limited
> > > market for them, but I sure
> > > can't afford them. Here in Canada I was recently
> > > quoted $195 each for a
> > > Stuart V10 cylinder kit (yes, just the cylinder
> > > kit!)
> > >
> > > ($1.00 CDN roughly .45 UKP)
> > >
> > > So, I've switched to fabricating everything. For
> the
> > > steam roller cylinders
> > > (and a few more models in time) I bought a big
> bar
> > > of Meehanite cast iron, 2
> > > 3/4" diameter x 18" for $10 at my local metal
> > > supermarket. The stuff
> > > machines absolutely beautifully and being
> Meehanite
> > > is very uniform in
> > > grain. No sand to deal with either, as it's
> > > continuous cast bar.
> > >
> > > By fabricating, there is one less obvious
> benefit.
> > > When using an expensive
> > > casting, I tiptoe around and be ultra careful
> > > measuring and machining for
> > > fear of ruining it. This takes time and could be
> all
> > > for nought if there's a
> > > blow hole or other defect, or I make a mistake.
> The
> > > whole time I'm working
> > > with it there's a kind of dread, which is not
> fun.
> > >
> > > With fabrication, a bit of relatively
> inexpensive
> > > raw stock is all that's at
> > > stake and it could be replaced quickly and
> cheaply
> > > if disaster struck.
> > > Because I'm aware of this, the work seems to go
> > > faster and I get more done.
> > >
> > > Good luck, Jeff Dayman Waterloo Ontario Canada
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Lee Grant" <leegrant@xxxxxxxxxx>
> > > To: <modeleng@xxxxxxxxxxxxx>
> > > Sent: Tuesday, December 14, 2004 5:36 AM
> > > Subject: [modeleng] Re: Stuart Triple Expansion
> > > Engine
> > >
> > >
> > > > A correction
> > > > In my last Email I said that the Bolton
> casting
> > > set was $645.00 I have
> > > just
> > > > checked Ernie Winter's Site they are now
> $1069.60
> > > That's put that project
> > > on
> > > > the back burner for a few more years.
> > > >
> > > > Lee
> > > >
> > > > MODEL ENGINEERING DISCUSSION LIST.
> > > >
> > > > To UNSUBSCRIBE from this list, send a blank
> email
> > > to,
> > > > modeleng-request@xxxxxxxxxxxxx with the word
> > > "unsubscribe" in the subject
> > > line.
> > >
> > > MODEL ENGINEERING DISCUSSION LIST.
> > >
> > > To UNSUBSCRIBE from this list, send a blank
> email
> > > to,
> > > modeleng-request@xxxxxxxxxxxxx with the word
> > > "unsubscribe" in the subject line.
> > >
> >
> >
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > All your favorites on one personal page - Try My
> Yahoo!
> > http://my.yahoo.com
> > MODEL ENGINEERING DISCUSSION LIST.
> >
> > To UNSUBSCRIBE from this list, send a blank email
> to,
> > modeleng-request@xxxxxxxxxxxxx with the word
> "unsubscribe" in the subject
> line.
>
> MODEL ENGINEERING DISCUSSION LIST.
>
> To UNSUBSCRIBE from this list, send a blank email
> to,
> modeleng-request@xxxxxxxxxxxxx with the word
> "unsubscribe" in the subject line.
>
__________________________________
Do you Yahoo!?
Yahoo! Mail - Find what you need with new enhanced search.
http://info.mail.yahoo.com/mail_250
MODEL ENGINEERING DISCUSSION LIST.
To UNSUBSCRIBE from this list, send a blank email to,
modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.
Other related posts:
