X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Received: from imf19aec.mail.bellsouth.net ([205.152.59.67] verified) by logan.com (CommuniGate Pro SMTP 5.1.6) with ESMTP id 1860298 for flyrotary@lancaironline.net; Sat, 24 Feb 2007 11:40:21 -0500 Received-SPF: none receiver=logan.com; client-ip=205.152.59.67; envelope-from=rusty@radrotary.com Received: from ibm60aec.bellsouth.net ([65.6.194.9]) by imf19aec.mail.bellsouth.net with ESMTP id <20070224163934.BOLW874.imf19aec.mail.bellsouth.net@ibm60aec.bellsouth.net> for ; Sat, 24 Feb 2007 11:39:34 -0500 Received: from rd ([65.6.194.9]) by ibm60aec.bellsouth.net with ESMTP id <20070224163929.RAYP157.ibm60aec.bellsouth.net@rd> for ; Sat, 24 Feb 2007 11:39:29 -0500 From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Primary regulator, and motor mount plate Date: Sat, 24 Feb 2007 10:39:29 -0600 Message-ID: <000001c75832$5ab66360$6e01a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C75800.101BF360" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6822 Importance: Normal Thread-Index: AcdXt13wCDdVml7jTEiS5zfP0LJBugAeFCwA In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C75800.101BF360 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable At the risk of enabling a gyro-head, =20 =20 Hi Lynn, =20 Disclaimer duly noted :-)=20 =20 I think the 3/8" plate would work fine so long as there is control of = the font pulley end of the engine in all axis. =20 =20 Good. I had to believe that would work as well, but thought 1/4" might = be just a bit too thin.=20 =20 So the front relief only needed to be higher than that by 20 PSI or so = to protect the oil cooler in a cold start up.=20 =20 In racing, the front relief is stacked solid and never opens. =20 =20 Excellent. This is what I wanted to hear. The primary relief valve = creates a big lump on the bottom of the engine, which complicates the use of a = flat plate on the bottom of the engine. I'm thinking of several options that would make a flat plate desirable. =20 =20 Now that I've thought about it some more, I could block the primary = relief shut by putting an aluminum dowel in place to hold the piston in it's = closed position. I could probably also cut off the relief valve flush with the bottom of the front cover, then use a set screw, or pin to keep it from turning. Drill one more hole near the bottom for a fluid relief, and it would still work as designed. =20 =20 I have to admit that I'm also considering the option of just installing = a Rotax 582 in the gyro initially, so I can build up some gyro experience = with a known, well proven engine. I have a small trailer I was planning to = use for a test stand for the single rotor, which might still be the wisest course of action. =20 =20 Thanks Lynn, Rusty (suffering from empty hanger syndrome) =20 =20 =20 ------=_NextPart_000_0001_01C75800.101BF360 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
At the risk of enabling a gyro-head,  
 
Hi=20 Lynn,
 
Disclaimer = duly noted=20 :-) 
 
I think the 3/8" plate would work fine so long as there is control = of the=20 font pulley end of the engine in all axis.  
 
Good. I had = to believe=20 that would work as well, but thought 1/4" might be just a bit too thin.=20
 
So the front relief only needed to be higher than that by 20 PSI or = so to=20 protect the oil cooler in a cold start up. 
 
In racing, the front relief is stacked solid and never = opens.  
 
Excellent.  This is=20 what I wanted to hear.  The primary relief valve creates a big lump on the = bottom of the=20 engine, which complicates the use of a flat plate on the bottom of the=20 engine.  I'm thinking of several options that would make a flat = plate=20 desirable.  
 
Now that = I've thought=20 about it some more, I could block the primary relief shut by = putting an=20 aluminum dowel in place to hold the piston in it's closed=20 position.  I could probably also cut off the relief valve = flush with=20 the bottom of the front cover, then use a set screw, or = pin to=20 keep it from turning.  Drill one more hole near the bottom for = a fluid=20 relief, and it would still work as = designed.  
 
I have to = admit that I'm=20 also considering the option of just installing a Rotax 582 in the gyro=20 initially, so I can build up some gyro experience with a known, = well proven=20 engine.  I have a small trailer I was planning to use for a = test stand=20 for the single rotor, which might still be the wisest course of=20 action.  
 
Thanks=20 Lynn,
Rusty = (suffering from=20 empty hanger syndrome)  
 
 
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