Message

X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 5.1.2) with ESMTP id 1598020 for flyrotary@lancaironline.net; Thu, 23 Nov 2006 21:05:26 -0500 Received-SPF: none receiver=logan.com; client-ip=205.152.59.68; envelope-from=rusty@radrotary.com Received: from ibm64aec.bellsouth.net ([65.6.194.9]) by imf20aec.mail.bellsouth.net with ESMTP id <20061124020455.HMXA23001.imf20aec.mail.bellsouth.net@ibm64aec.bellsouth.net> for ; Thu, 23 Nov 2006 21:04:55 -0500 Received: from rd ([65.6.194.9]) by ibm64aec.bellsouth.net with ESMTP id <20061124020454.OOLY16860.ibm64aec.bellsouth.net@rd> for ; Thu, 23 Nov 2006 21:04:54 -0500 From: "Russell Duffy" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Cockpit heat Date: Thu, 23 Nov 2006 20:04:54 -0600 Message-ID: <000001c70f6c$eee46aa0$6e01a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C70F3A.A449FAA0" 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 V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C70F3A.A449FAA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable One of the things I did was to install a fuel valve from a Cessna 210 = which is a double valve to allow excess fuel flow to be returned to the tank = you are feeding from. Works great on the T-210, however, in this = application there is a need for a small accumulator as the engine quits no matter = how fast you switch tanks! So for now I switch tanks at idle power. =20 =20 Sounds exciting :-) Fuel pressure is a pretty real time thing in fuel injected engines, but I'm surprised you can't switch tanks fast enough = to keep it running. Seems like someone else would have mentioned this = before. =20 Still have that vibration. It seems to have something to do with power = as I can dive at all speeds up to 200mph indicated and don't have it. Under = power it definitely increases in intensity in a skid.=20 =20 The CCI mount has pretty stiff dampeners, and I bet this is just some = sort of resonant vibration in the airframe. RV-8's are fairly well known for this with a Lycoming, and you can scare yourself by just moving your = feet to different spots on the floor. It's amazing how you can change the = vibration level by just varying the pressure in certain spots on the floor. =20 =20 Congratulations on the RV-8. Look forward to a picture of two. May = even pop down to see it sometime when you are going to be at the airport.=20 =20 Thanks, but the picture or two ain't much to look at. You can see a few pics and the first takeoff clip at- http://www.radrotary.com=20 =20 Bob (the guy who flew up there with me) has already mentioned wanting to = fly back up when I get my -8 out of it's experimental area. You've got a = really nice area to fly in, and I'm sure the airport will make Mrs. Garmin = worry (terrain, terrain, pull up. pull up ). I somehow managed = (mercifully) to only get a 25 hour test period, so it won't be long.=20 =20 Cheers, Rusty =20 ------=_NextPart_000_0001_01C70F3A.A449FAA0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

One of the things I did was to install a fuel valve from a = Cessna 210=20 which is a double valve to allow excess fuel flow to be returned to the = tank you=20 are feeding from. Works great on the T-210, however, in this = application=20 there is a need for a small accumulator as the engine quits no matter = how fast=20 you switch tanks! So for now I switch tanks at idle=20 power.

Sounds=20 exciting :-) Fuel pressure is a pretty real time thing in=20 fuel injected engines, but I'm surprised you can't switch tanks = fast enough=20 to keep it running. Seems like someone else would have mentioned = this=20 before.

Still=20 have that vibration. It seems to have something to do with = power as I=20 can dive at all speeds up to 200mph indicated and don't have = it. Under=20 power it definitely increases in intensity in a skid. The CCI = mount=20 has pretty stiff dampeners, and I bet this is just some sort = of=20 resonant vibration in the airframe. RV-8's are fairly well known = for this=20 with a Lycoming, and you can scare yourself by just moving your = feet to=20 different spots on the floor. It's amazing how you can change = the=20 vibration level by just varying the pressure in certain spots on = the=20 floor. Congratulations on the = RV-8. Look=20 forward to a picture of two. May even pop down to see it = sometime=20 when you are going to be at the airport. Thanks, = but the picture=20 or two ain't much to look at. You can see a few pics and the=20 first takeoff clip at- http://www.radrotary.com Bob (the = guy=20 who flew up there with me) has already mentioned wanting to fly = back up=20 when I get my -8 out of it's experimental area. You've got a=20 really nice area to fly in, and I'm sure the airport will make=20 Mrs. Garmin worry (terrain, terrain, pull up. pull=20 up <g>). I somehow managed (mercifully) to only = get a 25=20 hour test period, so it won't be long. Cheers, Rusty ------=_NextPart_000_0001_01C70F3A.A449FAA0--