[modeleng] Re: Tr: Re: Steam engine RPM ?
- From: "Terry Lane" <tel@xxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Wed, 7 Sep 2005 11:24:59 +1000
You sure don't Al, if it was mine I'd be aiming for perhaps half of AJ's
suggested figures
> If this is a working display model, you don't want it
> operating so fast that the workings of the motion are
> blurred, do you?
>
> Al Messer
>
> --- alan Stepney <alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> wrote:
>
> > As far as I am aware, there is no absolute formula
> > for speed against engine
> > size.
> > There are many rough guides, with the actual
> > limiting factors being, the
> > valve gear, inertia in moving parts, and general
> > inefficiency, plus the
> > normal design criteria.
> >
> > At a guess, that size of engine would probably turn
> > at around 500-600 rpm
> > without too much trouble.
> > It is quite a long stroke for the bore, which will
> > limit speed.
> >
> > Alan
> >
> >
> >
> > ----- Original Message -----
> > From: "Pcx" <pierre.courbouleix@xxxxxxxxxx>
> > To: <modeleng@xxxxxxxxxxxxx>
> > Sent: Tuesday, September 06, 2005 7:24 PM
> > Subject: [modeleng] Tr: Re: Steam engine RPM ?
> >
> > > Hi All,
> > When discussing with a friend we had this question (
> > may seem crazy to the
> > most experienced of You), for which we found no
> > reliable answer, how to
> > calculate (estimate?) the running speed of a steam
> > engine (RPM) knowing the
> > type of engine (single/double acting, condensing/non
> > condensing), the
> > stroke,the bore and the inlet steam pressure ? For
> > your info we are building
> > an horizontal slide-valve steam engine 1 1/2 bore, 2
> > 1/4 stoke , of a type
> > inspired from an old design .
> > > I thank you for your help and the infos you can
> > forward ....
> > > Regards
> > >
> > > pierre.courbouleix@xxxxxxxxxx
> > > Pierre
> >
> >
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>
>
>
>
>
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