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Triple expansion engine valve arrangement

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Stilldrillin:
Stew.
Don't you think that little loco has been ignored/ waiting patiently, for some while now?     

Isn't it time to pay her a little attention?   :D

David D

Bluechip:
Stew


What's a 'POP CORN' engine ???

Dave BC

sbwhart:
Hi Dave

A popcorn engine is a little steam engine that they used in the US on carts to drive the drum that they roasted pop corn and salted peanuts in in the 1890.

the're are a few different types, ones a wobler another is a small horizontal.

If you google Creators popcorn engine or Dunbar popcorn engine you'll get lots of hits.

Stew

Bluechip:
Hi Stew

The only involvment I've had with pop-corn is some bagged-up stuff my mates daughter had to shove in the microwave .. which turned out to be edible to my amazement. ( Or very nearly!! )

Got some pics here for the Dunbar Engine .. and oven wotsit.

http://modelsteam.myfreeforum.org/viewtopic.php?t=32977&start=0

Very nice little-ish engine. Would make an attractive model.

Learn something every day ... thanks Stew ..

BC

sbwhart:
Thanks for the link Dave

Every engine seems to be different in some small way, I think they were for ever developing them, with this one its how they are supporting the valve rod with the curly up bit from the cylinder cover, I've seen them with nothing at all and with a column coming up from the base to give support. The plumbing around the governor is always different as well.

They all have flywheels with curved spokes that seems to be a common theme, got to work out how to fabricate one of those up, got a few ideas not sure how it will work out when I get round to making it the fly wheel is going to be the first bit if I can't get curvy spokes I may abandon the idea.

Stew

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