Return-Path: <13brv3@bellsouth.net> Received: from imf22aec.mail.bellsouth.net ([205.152.59.70] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with ESMTP id 2578786 for flyrotary@lancaironline.net; Sun, 14 Sep 2003 00:44:32 -0400 Received: from rad ([68.212.12.251]) by imf22aec.mail.bellsouth.net (InterMail vM.5.01.05.27 201-253-122-126-127-20021220) with ESMTP id <20030914044432.HRLJ12046.imf22aec.mail.bellsouth.net@rad> for ; Sun, 14 Sep 2003 00:44:32 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Good news, Bad news Date: Sat, 13 Sep 2003 23:44:32 -0500 Message-ID: <000001c37a7a$e4336c80$0201a8c0@rad> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C37A50.FB5D6480" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C37A50.FB5D6480 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Russell, Just as a sanity check, before doing anything drastic, check = your pitot static system for restrictions. If that looks good, swap in an ASI known to be good. You could just be having instrument failure. It's hard = to imagine even the B.U.C. killing off 40 kts. or more. Rick Girard=20 =20 Good thought, but I looked at the GPS a couple times today, and it was always in the ballpark of the ASI. Also, the cross-check is my dismal = climb rate. My friend's 160 HP RV-3 climbs at 100 kts, and 2100 fpm. I have = 200+ HP available, and can't even get to 100 kts in climb. Best climb rate = I've seen was 1500 fpm, and I didn't see more than 1000 fpm today. I should = be looking at about 160 kts without wheel pants and gear leg fairings, and = I'm seeing only 113 kts or so. Very depressing... =20 The only other variable is the prop. I'm using a 3 blade Warp Drive = prop, and I'm starting to question how well it may be working. It's certainly absorbing the power, but is it effectively turning that power into = thrust? How can I know? Anyone else running a Warp Drive on a fast plane? =20 I do agree that it's time to step back and make some well reasoned observations, rather than taking a chainsaw to anything yet. For sure, = the cowl has to go eventually, but I really didn't want to have to do that = now. I've thought about replacing the radiator, and modifying the cowl into = yet another temporary shape, but that's a lot of work for another temporary cowl. =20 =20 Thanks, Rusty =20 ------=_NextPart_000_0001_01C37A50.FB5D6480 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Russell, Just as a sanity check, before doing anything drastic, = check your=20 pitot static system for restrictions. If that looks good, swap in an ASI = known=20 to be good. You could just be having instrument failure. It's hard to = imagine=20 even the B.U.C. killing off 40 kts. or more.

Rick Girard 
 
Good thought,=20 but I looked at the GPS a couple times today, and it was always in the = ballpark=20 of the ASI.  Also, the cross-check is my dismal climb rate.  = My=20 friend's 160 HP RV-3 climbs at 100 kts, and 2100 fpm.  I have = 200+ HP=20 available, and can't even get to 100 kts in climb.  Best climb rate = I've=20 seen was 1500 fpm, and I didn't see more than 1000 fpm = today.  I=20 should be looking at about 160 kts without wheel pants and gear leg = fairings,=20 and I'm seeing only 113 kts or so.  Very = depressing...
 
The only=20 other variable is the prop.  I'm using a 3 blade Warp Drive prop, = and I'm=20 starting to question how well it may be working.  It's certainly = absorbing=20 the power, but is it effectively turning that power into thrust?  = How can I=20 know?  Anyone else running a Warp Drive on a fast=20 plane?
 
I do agree=20 that it's time to step back and make some well = reasoned observations,=20 rather than taking a chainsaw to anything yet.  For sure, the cowl = has to=20 go eventually, but I really didn't want to have to do that = now.  I've=20 thought about replacing the radiator, and modifying the = cowl into yet=20 another temporary shape, but that's a lot of work for another temporary=20 cowl.  
 
Thanks,
Rusty
   
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