X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from outbound-b1.mx-route.com ([208.123.79.45] verified) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4921452 for flyrotary@lancaironline.net; Fri, 25 Mar 2011 07:54:41 -0400 Received-SPF: none receiver=logan.com; client-ip=208.123.79.45; envelope-from=tom@midwestaviation.net Received: from fl-184-0-224-156.dhcp.centurylinkservices.net (HELO [192.168.1.64]) ([184.0.224.156]) by smtp.mxtoolbox.com with ESMTP/TLS/AES128-SHA; 25 Mar 2011 06:54:05 -0500 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1082) Subject: Re: [FlyRotary] Re: intersting video From: Thomas Giddings In-Reply-To: Date: Fri, 25 Mar 2011 07:54:05 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <9B5FE4A4-31A5-4FF7-B7B8-5A0612E3D806@midwestaviation.net> References: To: "Rotary motors in aircraft" X-Mailer: Apple Mail (2.1082) Greg: I also thought about the P51 style scoop. I do think it is a great = idea. I have a landing gear that retracts into the fuselage and there = really is not much room for a belly scoop. Could you post some Pics of = how you did this. How Big is the Radiator and scoop and where did you = place the oil cooler. By the way if any of you are at Sun N Fun next = week . Please stop by and say Hi. I will be in Building A booth 67 all = week. I plan on getting out and looking at some flying examples if = possible. and maybe see some of you folks then. Tom Giddings On Mar 25, 2011, at 12:43 AM, Greg Ward wrote: > Hey Tom; > We looked at this scenario when we were laying out our Legacy, and = determined that it was packing too much into a cowling that already had = a large intercooler, and a turbo that was guaranteed to be radiating = about 1400 to 1900 degrees of heat. So, the question was, where to put = a radiator, oil cooler, etc. outside of the cowling? We settled on a = P-51 scoop for both, and built it exactly like the original, hoping for = a little thrust return. Difference was, we kept the radiator out of the = fuselage, because we didn't want a leak in the cockpit at 20+K feet, = with all that entails. We are also looking at installing a hot water = heating system, with valves both in and out for the very same reasons. = So, what we have left is, the engine, intercooler, turbo, and whatever = goes on the firewall, with a lot of air going through, to hopefully keep = everything happy. The flaps on the scoop should enable us to keep temps = under control, a' la P-51, so we'll see. >=20 > Greg Ward > Lancair Legacy N178RG, Still in progress >=20 >=20 > ----- Original Message ----- From: "Thomas Giddings" = > To: "Rotary motors in aircraft" > Sent: Thursday, March 24, 2011 8:59 PM > Subject: [FlyRotary] intersting video >=20 >=20 > Here is a youtube engine test run of an LS1 V8. Watch it long enough = to see how the dual radiators are plumbed. This system for engine = cooling includes two radiators which appear to be in series. It seems = to be going from the thermostat housing to the top of the first radiator = then is taken out the bottom of the first one and crosses over to number = two at the top inlet and back out the bottom into the pump and back = through the block .They are both dual pass radiators . They feed this = air from two outside the cowl scoops. Bud Warren claims this cools very = well. In fact he claims it is the only way to cool the 300HP LS1 V8's . = I wanted to original install a LS3 into my Questair, but could quite get = it stuffed in there . http://www.youtube.com/watch?v=3DCUSbOAZRRtg. If = this link does not work search youtube for Franks Bearhawk Test run. = Incidently they claim they need 1256 Sq In of radiator surface to keep = the V8 running at 190 in cruise and 200 max in the climb. Also if you to = geared drives yahoo forum there is a very interesting read on the = subject on cooling requirements for the LS1. >=20 > Tom Giddings > VP Avionics Sales > MIDWEST AVIONICS > 200 Hardy Roberts Dr > PO Box 219 > West Paducah,KY 42086 > 877-904 9966 > Cell; 727 858-1772 > FAX:270 744 3466 > tom@midwestaviation.net > Online Store > www.midwest-avionics.com >=20 >