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Potty Popcorn Engine

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sbwhart:
Hi Kvom

I followed Bogs method too.

I'm sorry that I've misled you guys, but I failed to take a pic of skiming the piston to final diameter griping the rod in a collet so that it would all be running true.

Thanks for following the thread.

Stew

AndyB:
Thank you Stew :bow: :bow: :bow: :bow: :bow: :bow: :bow:

So the eccentric is offset from the centre by Y/2?

That is one of the many things that I have to know and forget to ask when I speak to people about steam engines. :doh:

Keep up the great work. :clap:

Andy

sbwhart:
Sorry Andy

I didn't answer your origonal ?.

The slide movement is X-B

So the eccentric offset is (X-B)/2 so for the popcorn the calculation is (14.6 - 9)/2 = 2.8

Stew

AndyB:
Fantastic Stew :bow: :bow:

Many thanks. :ddb: :ddb: :ddb:

Sorry, I am by no means a mathemetician...I have to take my shoes and socks off to count to 11  :lol: :lol: :lol: :lol:
If I have to count anything unusual I have to ask my mate from Wisbech to take his shoes and socks off... :lol: :lol:

Andy

Stilldrillin:
While we're slightly mathematical.........  :smart:

Discussed, some months back. What was the thickness of packing needed in a three jaw chuck, to throw to the required offset?  :scratch:

I seem to remember a simple reply. (Like 2 or 3x throw).....

David D

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