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Yeah, I thought Tracy and yourself were
using the smaller hoses with the pretty AN fittings, and there is no doubt that
Tracy at least has been successful (and I'm sure you'll be right behind him :-),
but I still stand by my theory that if the automakers use no less than 1.25"
hoses, then why would should we when we have a higher heat rejection
requirement.
Now maybe we can get away with less, but then
the argument that the EWP can't possibly have enough flow because of our higher
heat output is invalid. Maybe we can get away with smaller hoses, or maybe we
can get away with an EWP, but can we get away with smaller hoses AND an
EWP???
Because I knew that many were watching closely
as mine was the first known aircraft use of an EWP (some hoping for success and
many expecting failure), I decided that 1.25" hoses were mandatory. I'd
originally started my installation with 1" hose, but changed my mind on this
before I was even completed that part of the installation.
Todd
If I'm not mistaken, Tracy is
using 3/4" hoses??? I've been using AN12 hoses, with two evap cores
in series, and there has never been a question of cooling the water on
the RV-3, even in severe climb tests. The antique
mechanical pump does have a lot of muscle, and might be making up
for it though, and I still haven't found a way to test the EWP by itself
in flight.
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