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I agree, Bill, very creative. However, while
it appears to give him a nice increase in MAP due to Ram air, from what I have
been reading about those types of filters, two thoughts come to
mind:
Given that the filter elements offer little
resistance to air flow what keeps
1. The Hot air under the cowl from being
ingested through the sides of the filter even when the ram butter fly is open -
I would expect most of the air to be ram air but not all. I presume the higher
ram pressure would in effect act as a positive pressure area and keep the hot
air out, in which case it brings up the next question.
2. What prevents, The ram air (since its
at higher pressure ) from leaking out through the sides of the filter when the
ram valve is open? Is it just not enough to make any difference - hard to
believe given all that filter area.
Interesting though.
Ed
----- Original Message -----
Sent: Thursday, May 05, 2005 6:56
PM
Subject: [FlyRotary]
Ramair-airfilters-Revisited
There
has been an interesting thread on ram air and filtering on the RV list. Here
is a link to a clever looking
solution:
http://www.lazy8.net/intakesystem.htm
Looks
simple and lightweight, but I am not quite sure where you would mount it on a
rotary. Also, it doesn't have a bend in the path to drop out bugs and big
chunks when the valve is open. This is easily corrected,
however.
and
a more traditional
approach
http://www.rvproject.com/ramair.html
Again,
no "bug bend".
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