Terry Watson
Joined: 09 Jan 2006
Posts: 290
Location: Seattle, WA USA
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 Posted: Fri Aug 04, 2006 1:59 pm Post subject: New F.A.B. alternate air intake |
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A couple of weeks or so ago I asked about other builder's experiences with
Van's new alternate air intake that mounts on the bottom of the Filtered Air
Box (FAB) I think I now have a solution that works, at least to my
satisfaction. No testing yet, I'm still ground-bound for awhile longer.
I bought another of Van's new shuttered oil cooler air controls ($85.00!)
and mounted it under the FAB, leaving the round metal flange of the 2nd
generation alternate air intake in place but removing the swinging door. I
spaced the shuttered door down 1/4", more or less, to create a small plenum
and adapt the larger rectangular shuttered door to the smaller round
opening. I also incorporated a larger mounting plate for the shutter so my
nutplates could all be outside the footprint of the filter. It all seems to
work. It opens and closes with a short (maybe 1-1/2") pull on the knob in
the cockpit.
Disadvantages: a) A little more weight, b) It isn't completely air tight,
and c) I have some nutplates now inside the FAB but outside the filter
creating some turbulence in the incoming air, and d) $85.00 plus the control
cable and other mounting hardware.
Terry
RV-8A finishing (?)
Seattle
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