Return-Path: <13brv3@bellsouth.net> Received: from imf17aec.mail.bellsouth.net ([205.152.59.65] verified) by logan.com (CommuniGate Pro SMTP 4.2b6) with ESMTP id 242374 for flyrotary@lancaironline.net; Sun, 04 Jul 2004 01:43:39 -0400 Received: from rd ([65.6.194.9]) by imf17aec.mail.bellsouth.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with ESMTP id <20040704054309.QEHW1742.imf17aec.mail.bellsouth.net@rd> for ; Sun, 4 Jul 2004 01:43:09 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Reality Check Date: Sun, 4 Jul 2004 00:43:09 -0500 Message-ID: <001f01c46189$c9d32b90$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0020_01C4615F.E0FD2390" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 This is a multi-part message in MIME format. ------=_NextPart_000_0020_01C4615F.E0FD2390 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit This seems somewhat in line with what others have reported as successful, but I am afraid of what high power on climb-out is going to do. Hi Dave, I wish I had a good answer for you. I've never done a high speed taxi test (just don't believe they're a good idea), so I can't relate to your specific test. I do know that I can tie the plane down, and warm it up until the oil reaches 130 degrees, then run full throttle for about 2 minutes before reaching 200 degrees on oil or water. At actual climb speed, I don't think I could ever exceed 200 degrees. If you want peace of mind, I would suggest that you tie the plane up, and try a full throttle run. You know that you should get at least 1000 ft/min climb, so you only need one minute of full throttle to get to pattern altitude. Temps will come down quickly when you throttle back, so as long as you get to pattern alt, you're home free. As others have suggested, try to pick a cooler time for your first flight, and don't build up any excess temp before takeoff. You can take significant comfort in the fact that you're flying an RV. If you built the plane anywhere close to the way Van intended for it to be built, you will have no surprises from the airframe. I've seen some pretty sloppy looking RV's, that I wouldn't personally fly in, but they still fly great. The airframe won't let you down. I always cringe when I hear of people who want to design their own airframe, AND install an alternative engine. IMO, that's a combination that would require a professional test pilot. Good luck, Rusty (weather man forecasts max cruise speed, and some aerobatics tomorrow) ------=_NextPart_000_0020_01C4615F.E0FD2390 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

This seems somewhat in line with what others have = reported as=20 successful, but I am afraid of what high power on climb-out is going to=20 do.

Hi=20 Dave,
 
I wish I = had a good=20 answer for you.  I've never done a high speed taxi test (just don't = believe=20 they're a good idea), so I can't relate to your specific test.  I = do know=20 that I can tie the plane down, and warm it up until the oil reaches 130 = degrees,=20 then run full throttle for about 2 minutes before reaching 200 degrees = on oil or=20 water.   At actual climb speed, I don't think I could ever = exceed 200=20 degrees. 
 
If you = want peace of=20 mind, I would suggest that you tie the plane up, and try a full throttle = run.  You know that you should get at least 1000 ft/min climb, so = you only=20 need one minute of full throttle to get to pattern altitude.  Temps = will=20 come down quickly when you throttle back, so as long as you get to = pattern alt,=20 you're home free.  As others have suggested, try to pick a cooler = time for=20 your first flight, and don't build up any excess temp before = takeoff. =20
 
You = can take=20 significant comfort in the fact that you're flying an RV.  If = you=20 built the plane anywhere close to the way Van intended for it to be = built, you=20 will have no surprises from the airframe.  I've seen some pretty = sloppy=20 looking RV's, that I wouldn't personally fly in, but = they still fly=20 great.  The airframe won't let you down.  I always cringe when = I hear=20 of people who want to design their own airframe, AND install an = alternative=20 engine.  IMO, that's a combination that would require a = professional=20 test pilot.
 
Good=20 luck,
Rusty = (weather man=20 forecasts max cruise speed, and some aerobatics=20 tomorrow)    




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