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Frisbie

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PaulR:
A couple of decades ago I came across this toy engine and a descendant of the designer very kindly sent me copies of the incomplete original drawings. I've always fancied building something with a similar mechanism (without potential for shrapnel wounds from the safety-valve-free boiler!) but I have to admit I don't quite understand it. I think the double acting cylinder is fixed, taking steam directly from the boiler below, and the 'valve plate' rocks to exhaust steam - sort of a negative version of a wobbler!

What's confusing me is the valve rod guide, surely that can't be a close-fitting hole... can it??

I've collected photos of several examples from auction sites which I can post but I can't post the original drawings.

crueby:
Neat looking engine!  I would say that guide hole is loose fit since the rod rocks, so does the plate at its end.

Kim:
That IS a fascinating (if somewhat scary) engine.  Very interesting!

Kim

CI:
My dad built that Frisbie replica in the top photo.
Dad's was a barstock build.
Unfortunately he gave it away to some unknown party, so I just have a few photos.

There was an article in Live Steam magazine about a cast Frisbie.
I will see if I can find that.
Perhaps I can post a piece of that article.

I recall looking at the photos, and not really understanding how it worked myself.

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CI:
1st Part was in Live Steam, March/April, 1999, by Birk Peterson.
Part 4 was Nov/Dec, 1999.

Here is a sample from that article.

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