[modeleng] Re: Winson Jubillee

Jesse,
The monkey motion you are referring to on the front of the switcher is 
the Gresley (sp?)
valve gear.  Alco had the license for the gear over here, and the only 
other domestic
examples I know of are the SP 4-10-2, and UP 4-12-2 on display east of 
LA.  The
4-10-2 in the Franklin institute has 3 sets of Walchearts to operate the 
valves.  I'm not
aware of any other surviving 3 cylindered locos over here (aside from 
Willamettes and Shays).

On the two locos near LA, the center cylinder is inclined, about 14 
degrees, if I remember
correctly.  

Tim,

I am also curious as to what the problem with this Winson design is 
concerning what
has already been said.  I'm not real familiar with British loco design, 
but the only thing
I can imagine, from what has been said, would be that the eccentrics 
being made in one
unit, and the one for the middle cylinder being off from the other two. 
 Must be kind of
close clearances on a 5" gauge loco with all that between the frames.  

If anyone hears what the actual problem is, I would sure be interested 
in hearing.

Regards,

Doug  

JESSE LIVINGSTON wrote:

>Tim,
>
>Three cylinder locomotive engines were not unknown over here in the
>Colonies, but the only one I remember ever actually seeing is a switcher at
>the Museum of Transport in St. Louis.  It seems that the valve motion on it
>is somehow worked by a system of levers on top the pilot beam.  They are
>connected to the valve rods on the two side cylinders and through some
>trickytrac movement, they operate the valve for the centre cylinder.  I have
>a close-up photo of all the banjo work somewhere if I can find it.
>
>What is the problem about the cylinders not being in line on the Winson?  Is
>the centre cylinder lower than the other two?
>
>Jesse in Tennessee
>
>
>
>
>  
>
>>Jesse
>>
>>The prototype is a three cylinder simple with three sets of Walschaerts. I
>>think the model is the same. That the model can be run on either the
>>    
>>
>inside
>  
>
>>or the outside cylinders makes me think that the problem is one of valve
>>timing due to the cylinders not all being in line which was often the case
>>with UK locos at least. I would think that it is a problem which is
>>    
>>
>capable
>  
>
>>of resolution albeit with remaking of some inside cylinder motion parts.
>>
>>I'm not offering.
>>
>>Best regards and thanks for the photos (I'll drop you a line about them
>>soon)
>>
>>Tim
>>
>>
>>    
>>
>>>From: "JESSE  LIVINGSTON" <fernj1@xxxxxxxxxxxxx>
>>>Reply-To: modeleng@xxxxxxxxxxxxx
>>>To: <modeleng@xxxxxxxxxxxxx>
>>>Subject: [modeleng] Re: Winson Jubillee
>>>Date: Tue, 25 Jan 2005 17:49:52 -0600
>>>
>>>Gents,
>>>
>>>What possible problem could there be that will not allow the centre
>>>cylinder
>>>on the Jubilee to operate?  Does it not have a valve that can be properly
>>>timed?  Is it a compound engine mayhap? The pic on the web site is a real
>>>beauty, shame that they give trouble about running properly.
>>>
>>>Jesse in Tennessee
>>>
>>>      
>>>
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>>
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>>    
>>
>line.
>
>MODEL ENGINEERING DISCUSSION LIST.
>
>To UNSUBSCRIBE from this list, send a blank email to, 
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>
>
>  
>



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