Mailing List flyrotary@lancaironline.net Message #10229
From: Michael Haynes <mickandfi@ihug.com.au>
Subject: plenum chamber
Date: Sat, 7 Aug 2004 11:03:38 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi All
     Thanks  for the info on the water pump gallery. I was going through some old files and guess what I found. Should have looked there first! I have a new question for the group. The size and shape of the plenum chamber. After looking at the Mistral site (VERY NICE) I now have reservations about the size and shape of plenum I was going to use. Originally I was going to manufacture one, box shape and only 2 1/2" wide 3 1/2" high 8" long. Really didn't think it would be big enough but made for a neat installation. Now im considering extending the inlet runners completely over the engine and mount a tubular plenum approx 4" dia 10" long. my manifold is very similar to one that I saw on this site, I think it was mounted on an RV4 running duel throttle bodies. Mine is a turbo so needs to be slightly different. Wish I could post a pic but my picture album program wont compress them enough to post! ( maybe operator error) . I have a few shots of the oil injection pump that ill be running that I tried to post as well, its a modified electric version, with remote oil adaptor that I got from Tracy.The pump is fully adjustable for what ever oil flow you want.( no linkages and very simple).
Just got my confirmation from vans, QB 7 is on its way. now only if Fred can supply the mount,( been on order for ages). Cant wait to hang the engine.  
 cheers
 Mick.   
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