DCS317(at)aol.com
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 Posted: Mon Jul 31, 2006 10:38 am Post subject: Plenum and Air Induction |
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Plenum Questions:
RV-8 with a non-James cowling that has
round 5 1/4 openings. 0I'm0 making my own plenum for my IO-540
(currently I have standard baffles).0I0 have the form for the plenum
nearly done and would like to use carbon fiber0 and high temp
resin/vacuum bagging for the plenum. I want to redo0my0 engine air
intake (currently a K&N filter below the baffle plate in0 front of
cylinder #2. My questions and/or refer me to the archives:
1.0 Any recommendations for the high temp resin?
2. Source for the carbon fiber0 and types of carbon fiber to use?
3. 5 1/4" metal inserts that sandwich0 between the upper and lower cowling halves-- machining from tubing? Tubing0 source so I don't have to start with a
solid block of aluminum?
4.The 5 1/4 metal inserts can be held in place by the rubber sleeves0 (anchored to the plenum) and cowl opening only? No other fasteners?
5.0 Material for the rubber sleeves from the metal inserts to the
plenum?�0 (I've thought I'd use baffling rubber fabric--my plenum
does not have round0 front attachment points.)
6. How to fasten the plenum to the metal0 baffles? Nutplates?
Reinforce the fiberglass edge with .0400 aluminum on both sides of
the plenum attachment edge? Silicone rubber0 gasket between the
plenum and the metal baffle plates?
7. Anyone ever0 stolen plenum air from the metal 5 1/4 inserts by Y-
ing off from the inserts0 for a source of ram air for induction air
(not just a filter box below the0 baffle plate in front of cylinder
#2)? I'm considering modifying BOTH0 5 1/4 metal inserts,
horizontally bisecting, i.e., TIG welding a horizontal0 plate(s), (or
probably using only 30% of the frontal area for induction0air,0 rest
for cooling) in both of their openings. Separate rubber sleeves0
would carry air to the plenum and engine air intake tubes on BOTH0
sides. Intake tubes with individual(?) K&N filters could be0
bypassed for unfiltered ram air with a baffle plate (controlled from
the0 cockpit), then to a "Y", then to engine intake.
DO NOT ARCHIVE
Don 110 hours on0 N417DS
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