[SEL] Re: Castings/now hot bulb engines

[Curt]

Patrick,
I recall your post of this hotbulb cut in half a while back. For those 
of us that have not had the joy of tinkering with hot bulb engines yet, 
could you explain what the passages and ports are? What the burner bears 
on (heats)? What each of the threaded parts are connected to? What the 
jacket is for? Etc.
Yes, we saw hotbulbs on engines while we were in Oz, but looking at the 
outside of a hot bulb makes it look deceptively simple. Apparently there 
is a lot going on inside. An explaination would be most helpful and 
appreciated.
Curt Holland
Gastonia, NC

Patrick M Livingstone wrote:

>While we are on the subject of castings I finally have a new hot bulb for my
>Blackstone. The original was severely cracked so was cut in half for a
>pattern maker to make a pattern:
>http://www.oldengine.org/members/pml/myengines/blackstone/04062614.JPG
>The final casting is very good and only need machining:
>http://www.oldengine.org/members/pml/myengines/blackstone/06042505.JPG
>http://www.oldengine.org/members/pml/myengines/blackstone/06042506.JPG
>http://www.oldengine.org/members/pml/myengines/blackstone/06042507.JPG
>http://www.oldengine.org/members/pml/myengines/blackstone/06042508.JPG
>
>If anyone is interested the next big casting project is the fuel-tank/base
>to suite 2hp & 3hp Hornsby Oil Engines. This is a big, heavy casting but if
>you know of anyone here in Oz who needs one let me know as the more that are
>cast the cheaper they will be. So far there are five being cast!
>
>Patrick M Livingstone
>Leichhardt NSW
>http://www.oldengine.org/members/pml/Index.html
>http://www.users.bigpond.com/pml/
>
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