[SEL] Curved spokes ...engine rotation

[Lyndsay Frazer]

Hi Guys, without getting really involved in this age old dicussion I think 
we all should consider the forces involved when the engine is running. In my 
humble opinion the outer end of curved spokes must head in the direction of 
the torque, that being away from the cylinder if the engine runs in the 
normal clockwise direction. If the flywheel runs the opposite way the outer 
rim will tend to wan't to fold in on itself. Take a look at most 
pulleys---which way do the curved spokes face in relation to the forces 
applied to them by the driven machine?. There are many engines out there 
with staight spokes but the pulleys have curved ones.
This is only my opinion for what its worth.



Lyndsay in OZ





>From: Kerry Morris <ozhornsby at yahoo.com>
>Reply-To: The SEL email discussion list <sel at lists.stationary-engine.com>
>To: The SEL email discussion list <sel at lists.stationary-engine.com>
>Subject: Re: [SEL] Curved spokes ...engine rotation
>Date: Tue, 23 May 2006 17:09:08 -0700 (PDT)
>
>G'Day Peter
>
>No it is not always the case.
>Take Hornsby, their transportable engines were in a
>different direction to their stationary.
>Been a thread before, some believe that it is about
>centrifugal forces etc but did not effect Hornsby's.
>
>Another question is why did the majority of British
>makers use curved and the Majority of US use straight
>Cannot be that the poms could not cast straight spokes
>without cracking, I think it was all about "that is
>the way we did it for steam" and it looks better.
>Whats you thoughts
>
>Kerry
>Lithgow OZ
>
>--- peter ogborne <jopeter at omninet.net.au> wrote:
>
> > I am restoring a engine of unknown make . It has two
> > fly wheels with curved
> > spokes . The fly wheels can be fitted from either
> > side ,i.e. curved spokes
> > leading or trailing . It would seem logical that the
> > spokes should be
> > trailing but is this always the case?
>
>
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