Return-Path: Received: from bewersdorff.com ([192.220.83.90] verified) by logan.com (CommuniGate Pro SMTP 4.1.3) with SMTP id 2578843 for flyrotary@lancaironline.net; Sun, 14 Sep 2003 03:25:11 -0400 Received: (qmail 6263 invoked by uid 21338); 14 Sep 2003 07:25:05 -0000 Received: from unknown (HELO rapunzel) ([216.101.149.124]) (envelope-sender ) by 192.220.83.90 (qmail-ldap-1.03) with SMTP for ; 14 Sep 2003 07:25:05 -0000 From: "Marko Bewersdorff" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: Good news, Bad news Date: Sun, 14 Sep 2003 00:19:01 -0700 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_023B_01C37A55.CC34B140" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-Reply-To: Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. ------=_NextPart_000_023B_01C37A55.CC34B140 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit MessageBefore you modify the cowling / prop test the HP required for flight at a certain HP, this article explains how: http://www.eaa1000.av.org/technicl/onehour/onehour.htm re Marko -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: Saturday, September 13, 2003 9:45 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Good news, Bad news 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 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... 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? 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. Thanks, Rusty ------=_NextPart_000_023B_01C37A55.CC34B140 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
Before=20 you modify the cowling / prop test the HP required for flight at a = certain=20 HP, this article explains how:
 
http://ww= w.eaa1000.av.org/technicl/onehour/onehour.htm
 
re
 
Marko
-----Original Message-----
From: Rotary motors in = aircraft=20 [mailto:flyrotary@lancaironline.net]On Behalf Of Russell=20 Duffy
Sent: Saturday, September 13, 2003 9:45 = PM
To:=20 Rotary motors in aircraft
Subject: [FlyRotary] Re: Good = news, Bad=20 news

Russell, Just as a sanity check, before doing anything drastic, = check=20 your pitot static system for restrictions. If that looks good, swap in = an ASI=20 known to be good. You could just be having instrument failure. It's = hard to=20 imagine even the B.U.C. killing off 40 kts. or more.

Rick = Girard 
 
Good=20 thought, but I looked at the GPS a couple times today, and it was = always in=20 the ballpark of the ASI.  Also, the cross-check is my dismal = climb=20 rate.  My friend's 160 HP RV-3 climbs at 100 kts, and 2100=20 fpm.  I have 200+ HP available, and can't even get to 100 kts in=20 climb.  Best climb rate I've seen was 1500 fpm, and I didn't see = more=20 than 1000 fpm today.  I should be looking at about 160 kts = without=20 wheel pants and gear leg fairings, and I'm seeing only 113 kts or = so. =20 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=20 absorbing the power, but is it effectively turning that power into=20 thrust?  How can I 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=20 now.  I've thought about replacing the radiator, and = modifying the=20 cowl into yet another temporary shape, but that's a lot of = work for=20 another temporary cowl.  
 
Thanks,
Rusty
   
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