X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail.globalsuite.net ([69.46.103.200] verified) by logan.com (CommuniGate Pro SMTP 5.2.0) with SMTP id 2784298 for flyrotary@lancaironline.net; Sun, 09 Mar 2008 14:15:18 -0400 Received-SPF: none receiver=logan.com; client-ip=69.46.103.200; envelope-from=rusty@radrotary.com X-AuditID: c0a8013c-aa8fdbb000004b31-3e-47d4290738b1 Received: from DELLRD1 (unknown [209.114.234.11]) by mail.globalsuite.net (Symantec Mail Security) with ESMTP id 5D6504DC011 for ; Sun, 9 Mar 2008 12:14:31 -0600 (MDT) From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] direct drive- was Re: Anyone have an RD-1C for sale? Date: Sun, 9 Mar 2008 03:13:57 -0500 Message-ID: <002b01c881bd$86f563d0$09b812c6@DELLRD1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002C_01C88193.9E1F5BD0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Brightmail-Tracker: AAAAAA== This is a multi-part message in MIME format. ------=_NextPart_000_002C_01C88193.9E1F5BD0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Sure, that can work but why not something completely different? I want = to see someone do a direct drive 2 rotor (maybe even turboed) in the right application and the RV-3 comes close. That would be Kool! =20 =20 Hi Tracy, =20 Thanks for the comments, but you're not suckering me into this direct = drive idea :-) =20 =20 You've mentioned this before, but I just can't see the benefit. How = much HP would a 2 rotor make at 3000, 3500, and 4000 rpm? Anyone got a power = chart handy? Limiting the rpm of a rotary to direct drive speeds just seems unnatural to me. =20 =20 Another point about the single rotor is that I'm trying to make the RV-3 Sport Pilot compliant, and that will be easier to justify with a smaller engine. Fortunately, I don't foresee any medical issues, but I'm also fooling myself into believing this will be my last airplane. Please = keep the laughter to a minimum :-) =20 =20 Rusty (heading south in less than 5 days) =20 PS- Just shoveled about 1000 lbs of snow from around the van. I can = easily see how people have heart attacks doing this. And yes, still with = Philips, but we just changed our name to Philips Healthcare. =20 ------=_NextPart_000_002C_01C88193.9E1F5BD0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Sure, that=20 can work but why not something completely = different?   I=20 want to see someone do a direct drive 2 rotor (maybe even turboed) in = the right=20 application and the RV-3 comes close.   That would be=20 Kool!   
 
Hi=20 Tracy,
 
Thanks for = the comments,=20 but you're not suckering me into this direct drive idea=20 :-)  
 
You've = mentioned this=20 before, but I just can't see the benefit.  How much HP would a 2 = rotor make=20 at 3000, 3500, and 4000 rpm?  Anyone got a power chart handy?  =  Limiting the rpm of a rotary to direct drive speeds just seems = unnatural=20 to me. 
 
Another = point about the=20 single rotor is that I'm trying to make the RV-3 Sport Pilot compliant, = and that=20 will be easier to justify with a smaller engine.  Fortunately, = I don't=20 foresee any medical issues, but I'm also fooling myself into believing = this will=20 be my last airplane.  Please keep the laughter to a minimum=20 :-)  
 
Rusty = (heading south in=20 less than 5 days)
 
PS- Just shoveled=20 about 1000 lbs of snow from around the van.  I can easily see how = people=20 have heart attacks doing this.  And yes, still with Philips, but we = just=20 changed our name to Philips Healthcare. =20    
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