Return-Path: Received: from [24.25.9.100] (HELO ms-smtp-01-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 2906656 for flyrotary@lancaironline.net; Fri, 26 Dec 2003 23:55:38 -0500 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-01-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id hBR4tXHH028809 for ; Fri, 26 Dec 2003 23:55:36 -0500 (EST) Message-ID: <000f01c3cc35$453f1180$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Good day for the rev-2 conversion Date: Fri, 26 Dec 2003 23:52:44 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000C_01C3CC0B.5B967740" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_000C_01C3CC0B.5B967740 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message =20 Greetings, I had a very optimistic day for my rev-2 upgrade. First, I weighed = most of the large items, and got an estimate of the difference in weight = between the turbo version, and the new NA arrangement. It should be = about 54 lbs lighter! All this weight off the nose is also great, since = I was way nose heavy before. Calculations show that the CG will move = aft 2", which is just perfect! I really couldn't have hoped for any = better results. =20 I also managed to get the initial fitting of the new cowl done, so I = can concentrate on fitting evap cores, intakes, and exhaust. This is = actually the fun part, especially when folks drive up to the hanger and = rave about the looks of the new cowl. It's amazing how good a stock = cowl can look :-) Cheers, Rusty (Motivated, but still a ways from the second first flight) One thing that I've learned is that an ounce here and an ounce there = and My bird's initial weight in was about 120lbs heavier than the = average. I didn't really think about it until someone suggested that = would be like building one to the average weight and then adding two = sixty pound bags of cement under each wing. Brought it into perspective = quickly. Weight kills performance, it mostly affects take off and climb = performance. Many folks believe it doesn't have that much effect on top = speed,naturally any addtional weight of course requires a higher angle = of attack to create the additional lift. But, with the RV's barn door = wing, even a little increased incident from the optimum (design weight) = adds quite a bit of drag, and so will (at least in the case of the RV) = cut down on your top speed. So, you're doing good Rusty. Ed Anderson ------=_NextPart_000_000C_01C3CC0B.5B967740 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message=
 
 

Greetings,

 

I had a very optimistic = day for my=20 rev-2 upgrade.  First, I weighed most of the large items, and got = an=20 estimate of the difference in weight between the turbo version, and = the new NA=20 arrangement.  It should be about 54 lbs lighter!  All this = weight=20 off the nose is also great, since I was way nose heavy before. =20 Calculations show that the CG will move aft 2", which is just = perfect!  I=20 really couldn't have hoped for any better results.  =

 

I also managed to get = the initial=20 fitting of the new cowl done, so I can concentrate on fitting evap = cores,=20 intakes, and exhaust.  This is actually the fun part, especially = when=20 folks drive up to the hanger and rave about the looks of the new = cowl. =20 It's amazing how good a stock cowl can look :-)

 

Cheers,

Rusty (Motivated, but = still a ways=20 from the second first flight)

 

 One thing=20 that I've learned is that an ounce here and an ounce there and My = bird's=20 initial weight in was about 120lbs heavier than the average.  I = didn't=20 really think about it until someone suggested that would be like = building one=20 to the average weight and then adding two sixty pound bags of cement = under=20 each wing.  Brought it into perspective quickly.  Weight = kills=20 performance, it mostly affects take off and climb performance.  = Many=20 folks believe it doesn't have that much effect on top speed,naturally = any=20 addtional weight of course requires a higher angle of attack to create = the=20 additional lift.  But, with the RV's barn door wing, even a = little=20 increased incident from the optimum (design weight) adds quite a bit = of drag,=20 and so will (at least in the case of the RV) cut down on your top=20 speed.

 

   So, you're doing good Rusty.

 

Ed=20 Anderson

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