[Steam-engine] Direction of rotation

[James Mackessy]

Hi Rick;
     It occurs to me as I re-read the post that there are some exceptions.
If , for instance,
there is a rocker lever between the eccentric rod and valve rod that
reverses the direction of
the valve. This would require the eccentric to be set with the high side on
the opposite side
of the crank throw, but that's a pretty rare case on stationary engines. A
not so rare case is
an inside admission piston valve engine. If I remember correctly, yours is a
slide valve engine,
so the original advice applies.
     If you do not have a copy of Terrell Croft's "Steam Engine Priciples
and Practice", you
should consider getting one. It will give you a good overview of stationary
engines along with
operating and repair info, plus instructions on setting most types of valves
and gears. You
can find it on :
http://www.bookfinder.com
usually for $20.00 or less. Well worth every dime.
Best Regards;
Jim Mackessy
----- Original Message ----- 
From: "Richard Strobel" <Richard_Strobel7 at msn.com>
To: "Steam-engine mailing list" <steam-engine at lists.stationary-engine.com>
Sent: Friday, June 17, 2005 12:55 PM
Subject: Re: [Steam-engine] Direction of rotation


> Thank you Jim!!!  You explained it well.
>
> Take Care,
> Rick
>
>
> ----- Original Message ----- 
> From: "James Mackessy" <jmackess at twcny.rr.com>
> To: "Steam-engine mailing list" <steam-engine at lists.stationary-engine.com>
> Sent: Thursday, June 16, 2005 7:35 AM
> Subject: Re: [Steam-engine] Direction of rotation
>
>
> > Rick;
> >      Generally speaking, the eccentric will lead the crank by 90 degrees
> > plus the
> > lead at least, so with the piston on top center, look at the eccentric
> > from
> > the end
> > of the shaft, whichever side it is on is the side of the crankshaft that
> > should be
> > moving down as the piston makes it's downward stroke. That is, if with
the
> > piston at
> > top dead center the largest part of the eccentric is on the right side
of
> > the shaft when
> > viewed from the end, the shaft will rotate clockwise when viewed from
that
> > end. If
> > the largest part of the eccentric is on the left, counterclockwise. The
> > eccentric's
> > high point should be roughly 90 degrees ahead of the crankpin as things
> > rotate.
> > Best Regards;
> > Jim Mackessy
> > ----- Original Message ----- 
> > From: "Richard Strobel" <Richard_Strobel7 at msn.com>
> > To: "Steam-engine mailing list"
<steam-engine at lists.stationary-engine.com>
> > Cc: "Corky Harris" <mtmidway3 at msn.com>
> > Sent: Thursday, June 16, 2005 8:35 AM
> > Subject: [Steam-engine] Direction of rotation
> >
> >
> > >   Howdy all from "The Big Sky" again!
> > >
> > >   Well we are getting the final coat of paint on our Stationary Wachs
> > > vertical and should start the assembly soon.
> > >
> > >   One question tho please: "What determines the direction of rotation
on
> > > this engine?"  To this untrained eye, there are no provisions for
> > > setting
> > or
> > > changing DOR.
> > >
> > >   Here's the link to the pictures and haven't added any in quite a
> > > while.
> > > Will take more pix's as we go along.
> > >
> > >
> > > http://community.webshots.com/album/188300547wpVzDE
> > >
> > > Thanks in anticipation
> > >
> > > Rick and Cork in Mt.
> > > _______________________________________________
> > > Steam-engine mailing list
> > > http://www.stationary-engine.com/mailman/listinfo/steam-engine
> > >
> >
> > _______________________________________________
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> >
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