[modeleng] Re: Unusual Valve Gear

Could well be Hackworth gear hidin' back there as well



> Lee,
>
> Very interesting and the only example I have ever seen of a Scotch Yoke
> being used on a locomotive piston.  The valve is of course underneath the
> cylinder and appears to be operated by a thin vertical lever attached to
the
> main rod.  Unfortunately everything is hidden by the saddle tank.  Could
> have been something similar to Joy valve gear, but I ain't sticking my
neck
> out to claim it is!
>
> Jesse in chilly W. Tennessee
>
>  Hi All
>  Can anybody provide me with the name or information on the unusual valve
> gear on this neat little Loco engine built in the UK by R & W Hawthorn in
> 1880 evidently it was based on a steam tram engine. I would like to find a
> bit more about how the valve gear worked would it have been similar to a
> beam engine
>  http://i9.tinypic.com/2eal2ty.jpg
>  I found this engine on Colin Usher's web site Ken Swan is building a
7-1/4
> gage version of it but the page hasn't been updated for a few months.
>
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