Muncaster 2 Cylinder Engine

The engine in question was in ME (1935) so later than the book therfore is not included.

Some of Muncaster's designs were little more than a GA and a couple of sections and I think this would be one of those engines rather than something like his Grasshopper that ran into about 20 pages or others that had fold out plans that would have allowed a couple more pages for details, though again possibly not fully detailed part by part.

He does show some general details such as bearing pedestals, big end details etc that could be applied to a number of the designs.

A GA and a paragraph is enough for some people though probably explains why we have not seen many examples of his designs being built until the likes of Julius and myself started to provide full drawings.

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For some aspects that is clearly true, Jason … and you deserve enormous praise for what you do.

But … ‘reverse engineering’ what might originally have been a designer's fudge in a visually-appealing model is a different matter; and Paul’s concern will remain unresolved.

What Westbury wrote doesn’t help the modern reader very much:

[quote] In the particular type of parallel motion illustrated, the geometry is simple and obvious; it was used on many types of engines, both horizontal and vertical, though in the latter case the ends of the radius rods were more often anchored from brackets fixed to the walls of the engine house than from columns; … [/quote]

… as we can see from the inconclusive discussion on this thread; whilst the geometry appears simple and obvious, it is actually neither.

MichaelG.

This is a good introduction to the analysis of straight-line mechanisms:

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Edited By Michael Gilligan on 27/10/2022 09:48:03

Unfortunately … It appears that ForceEffect Motion has been ‘retired’ for several years

MichaelG.

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Edit: __ This, however, looks very promising:

https://apps.apple.com/gb/app/motiongen/id1065657088

Ref. __ https://motiongen.io/resources

Another Edit: __ or at least it looked very promising until I visited that ‘resources’ page, which behaves badly.

Edited By Michael Gilligan on 27/10/2022 20:14:18

Yes that looks like the engine in the copy of the 1912 book I have. No linkages in sight sadly.