At 11:27 PM 7/4/2008, Neil2 wrote:
>While I agree with you I also think Curt could be correct

Haven't seen anything from Curt -- was pmail maybe?

>  and if I had two sets of exterior parts and lengthened the exhaust
> tube to a higher, second set of vent covers, it might work as well or better.

I'm a little confused what improvement you're trying to effect --
this is one of those deals that either works perfectly or it's no
good at all.  I can see making changes that -- if carefully thought
out -- don't impair its function; but (strictly in terms of function)
I don't see how it can be better than it already is.  It burns
reliably, with correct mixture, and doesn't go out with a hurricane
blowing past it.  What's left to want?

As to using a second set of fittings -- they went to a lot of trouble
to make a coaxial setup so that no matter what the wind did there
wouldn't be any pressure differential across the inlet and
outlet.  And it works amazingly well.  If you're having problems with
the flame blowing out then there's a leak somewhere in the system.

Cheers,

--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage," '85 GL "Poor Relation"