Return-Path: Received: from mailout2.pacific.net.au ([61.8.0.85] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 566919 for flyrotary@lancaironline.net; Tue, 14 Dec 2004 06:12:50 -0500 Received-SPF: none receiver=logan.com; client-ip=61.8.0.85; envelope-from=peon@pacific.net.au Received: from mailproxy2.pacific.net.au (mailproxy2.pacific.net.au [61.8.0.87]) by mailout2.pacific.net.au (8.12.3/8.12.3/Debian-7.1) with ESMTP id iBEBCYKP019420 for ; Tue, 14 Dec 2004 22:12:34 +1100 Received: from ar1 (ppp2643.dyn.pacific.net.au [61.8.38.67]) by mailproxy2.pacific.net.au (8.12.3/8.12.3/Debian-7.1) with SMTP id iBEBCV7L010294 for ; Tue, 14 Dec 2004 22:12:32 +1100 Message-ID: <004b01c4e1cb$8ba58df0$4326083d@ar1> From: "Leon" To: "Rotary motors in aircraft" References: Subject: Plugs Up vs Plugs Down was Re: Serious single rotor questions Date: Tue, 14 Dec 2004 21:52:23 +1100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0027_01C4E227.314A95B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_0027_01C4E227.314A95B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MessageHi guys, Young Bill here is NEARLY 100% correct. The main issue is that ALL = Mazda Rotary Engines EXCEPT the Renesis have a diagonal rear main oil = drain towards the sump on the inlet/exhaust side. The front drain is at = the bottom of the stationary gear, so it can drain either way, and the = centre housing is not too fussed which way it drains either as it has = the filler hole on the plug side. So the main issue is the rear housing = main bearing drain. HOWEVER, the Renesis engine, which has the side exhaust ports where = this drain channel normally is, so the clever little Hiroshima Elves = have the drain going diagonally down to the sump on the PLUG side. This = means that should you want to run "Plugs Down", you CAN do it with a = Renesis engine! But ONLY with a Renesis engine! I can see a certain "gentleman" at that other place having kittens over = this. A "Plugs Down" winsto ould certainly solve many of the = inlet/exhaust/cowl clearance problems. While I have been convalescing, = the thought had crossed my addled brain on more than one occasion!=20 Cheers, Leon ----- Original Message -----=20 From: William=20 To: Rotary motors in aircraft=20 Sent: Sunday, December 12, 2004 2:00 PM Subject: [FlyRotary] Re: Serious single rotor questions I don't think the oil can drain out of the rotors if you go plugs = down. Plugs up-- yes, down-- no. Bill Schertz KIS Cruiser # 4045 - Where can I get a single rotor eccentric shaft? I'm thinking that = the only ones running now were cut down from 13B shafts, which I = understand is a mighty tough job.=20 - Folks have done plugs-up engines, but has anyone ever done a = plugs-down engine? Do you see any reason why it wouldn't work as well = as plugs-up? Having the intake and exhaust on top would be the best = arrangement, but it won't be possible to do this unless I can get a = planetary drive unit to keep the prop in the center of the engine. ------=_NextPart_000_0027_01C4E227.314A95B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message
Hi guys,
 
Young Bill here is NEARLY=20 100% correct.  The main issue is that ALL Mazda Rotary=20 Engines EXCEPT the Renesis have a diagonal rear main oil = drain towards=20 the sump on the inlet/exhaust side.  The front drain is at the = bottom of=20 the stationary gear,  so it can drain either way,  and the = centre=20 housing is not too fussed which way it drains either as it has the = filler hole=20 on the plug side.  So the main issue is the rear housing main = bearing=20 drain.
 
HOWEVER,  the Renesis = engine,  which has=20 the side exhaust ports where this drain channel normally is,  so = the clever=20 little Hiroshima Elves have the drain going diagonally down to the sump = on the=20 PLUG side.  This means that should you want to run "Plugs = Down",  you=20 CAN do it with a Renesis engine!  But ONLY with a Renesis=20 engine!
 
I can see a certain "gentleman" at that = other place=20 having kittens over this.  A "Plugs Down" winsto ould certainly=20 solve many of the inlet/exhaust/cowl clearance problems.  = While I=20 have been convalescing,  the thought had crossed my addled brain on = more=20 than one occasion! 
 
Cheers,
 
Leon
----- Original Message -----
From:=20 William=20
Sent: Sunday, December 12, 2004 = 2:00=20 PM
Subject: [FlyRotary] Re: = Serious single=20 rotor questions

I don't think the oil can drain out = of the rotors=20 if you go plugs down. Plugs  up-- yes, down-- no.
Bill Schertz
KIS Cruiser # 4045

- Where can = I get a=20 single rotor eccentric shaft?  I'm thinking that the only ones = running=20 now were cut down from 13B shafts, which I understand is a mighty = tough=20 job. 
 
- Folks = have done=20 plugs-up engines, but has anyone ever done a plugs-down = engine?  Do you=20 see any reason why it wouldn't work as well as=20 plugs-up?  Having the intake and exhaust on top would be = the best=20 arrangement, but it won't be possible to do this unless I can get a=20 planetary drive unit to keep the prop in the center of the=20 = engine.  
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