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Model Forum / General / Models / March 2005



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ltd Stirling engine

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gordon bennet - 27 Mar 2005 23:26 GMT
A long shot I know, but does anyone have any plans for building a ltd
Stirling engine which uses a Ross yoke?
TIA.
Brian Drummond - 28 Mar 2005 14:06 GMT
>A long shot I know, but does anyone have any plans for building a ltd
>Stirling engine which uses a Ross yoke?
>TIA.

I think the Ross yoke will have a bit more friction than you want in an
LTD engine. Possibly it would work if the crank pin was fitted with a
tiny ballrace which ran in the yoke. It would have to be a loose fit in
the yoke (which would have to have a smooth inner surface) and run
around it like a racetrack.

If I wanted to build one I'd take a normal design (there's at least one
online) and adapt as above.

- Brian
gordon bennet - 28 Mar 2005 17:52 GMT
>>A long shot I know, but does anyone have any plans for building a ltd
>>Stirling engine which uses a Ross yoke?
[quoted text clipped - 8 lines]
> If I wanted to build one I'd take a normal design (there's at least one
> online) and adapt as above.

Cheers Brian, yes, I found a normal design.
I happened to see one using the Ross yoke on 'local heroes' and really like
the movement.
Brian Drummond - 31 Mar 2005 10:46 GMT
>>>A long shot I know, but does anyone have any plans for building a ltd
>>>Stirling engine which uses a Ross yoke?

>> If I wanted to build one I'd take a normal design (there's at least one
>> online) and adapt as above.
>
>Cheers Brian, yes, I found a normal design.
>I happened to see one using the Ross yoke on 'local heroes' and really like
>the movement.

oops, I apparently misread "Ross yoke" as "Scotch yoke" ... ah well,
Ross-shire is the nearest bit of Scottish mainland so it's an
understandable mistake.

- Brian
Ken & Chris Beardsell - 29 Mar 2005 16:03 GMT
An article appeared in Model Engineer in the mid '90's for an LTD with Ross
linkage. Mine worked well but friction has to be at a minimum.

>>A long shot I know, but does anyone have any plans for building a ltd
>>Stirling engine which uses a Ross yoke?
>>TIA.
 
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