[modeleng] Re: My latest model .... and the Triple
- From: "Pendragon" <idpriest@xxxxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Wed, 15 Dec 2004 18:00:00 -0000
Guys
Where I used to work we had a lathe that could bore to a length of 190
feet, I have a book somewhere too and if I can find it I'll post some
pictures.
Regards,
IP
Priest & Sons Model Engineers
http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm
-----Original Message-----
From: modeleng-bounce@xxxxxxxxxxxxx
[mailto:modeleng-bounce@xxxxxxxxxxxxx] On Behalf Of alanjstepney
Sent: 15 December 2004 16:56
To: modeleng@xxxxxxxxxxxxx
Subject: [modeleng] Re: My latest model .... and the Triple
I have a picture (somewhere) in a very old book showing a lathe some 60
odd
foot long, with a faceplate of, something around 12 ft diameter. From
memory, the fastest speed was under 10 rpm.
I would guess that the crankshaft was turned, but my ML7 wouldn't help!
alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
www.alanstepney.info
Model Engineering, Steam Engine, and Railway technical pages.
----- Original Message -----
From: "Harry Wade" <hww@xxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Wednesday, December 15, 2004 4:06 PM
Subject: [modeleng] Re: My latest model .... and the Triple
At 09:02 AM 12/15/04 -0600, you wrote:
>>A scale model of it would be fascinating.
The thing that strikes me immediately about that engine is the
machining diffculties, not in modeling it but in full size, and the
crankshaft in particular. How was the crank made? Forged? Cast? Is
it made in one piece or in interlocking sections? How was it turned?
Or was it turned? If it was turned, at what rpm would a 300ton
multiple-centered crankshaft be turned and who would be bold enough to
stand nearby with that much weight rotating eccentrically. Inquiring
minds, etc, etc.
With respect to Stuarts, I was a Stuart dealer for a few years,
which I discontinued because the prices slowed sales to a crawl not
detectable to the human eye, but IHMO they don't have a calculated "all
the traffic will bear and then some" attitude. As most of you know for
some years Stuarts has been owned by an industrial corporation and it's
my guess that a certain level of profitable performance is expected from
the Stuart "division" and that performance will be met, regardless of
what it does to the consumer price. I'm sure they do what they can to
contain costs, but profitability must be maintained so as the costs for
kitting the engines rise the increase is passed along to the consumer.
Regards,
Harry
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