X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.245] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.3.4) with ESMTP id 4177781 for flyrotary@lancaironline.net; Wed, 24 Mar 2010 20:36:11 -0400 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net Content-class: urn:content-classes:message Return-Receipt-To: "Bobby J. Hughes" Subject: RE: [FlyRotary] Turbo Plans Reply1 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Date: Wed, 24 Mar 2010 19:41:57 -0600 Disposition-Notification-To: "Bobby J. Hughes" X-MimeOLE: Produced By Microsoft Exchange V6.5 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F31C31D4@qnsi-mail.qnsi.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Turbo Plans Reply1 Thread-Index: AcrLoZqmWrJEVEmQTW+PNOCMSnzYCgAE840g References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" Don, I have a couple of data points that my help with radiador sizing. My supercharged renesis is cooling about 250 hp on take-off. Net HP after drive and heat loss is about 230 hp. I have 780 cubic inches of dual pass radiador. Up until this week all of the oil heat was being transferd to the water after the radiadors with an oil to water exchanger. The oil heat raises my water temp by 16F. My oil to water exchanger is limited to 43F oil transfer so I just added a half size oil to air cooler. Oil pan temps are maxing out at 260F. My radiator duct opening is about 26% of core face. Water climb temps with OAT between 70 and 80F are around 185F. So if you add another 20F to OAT my climb temps should be about 205F without the new mini oil cooler. I hope to get another 25F drop in my oil temps with the latest 5 pound weight gain. My cruise water temps are down around 160F. Bobby Hughes =20 -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Don Walker Sent: Wednesday, March 24, 2010 3:23 PM To: Rotary motors in aircraft Subject: [FlyRotary] Turbo Plans Reply1 Jeff and Al G. I know that one way to make things work better is to send the prop back to Craig and have him modify it. Yet, I want more power and the target max RPM is 7500. Plus I need more cooling. I'm maxed out on a 60 degree day, so it's time to do it all. Plus, some of my stuff is a little bit less than professional (intake manifold) and I can take care of that too. David. Thanks for the clarification on the radiator size and the hose sizes. =20 Yes, I need the space. So a radiator of about 3x18x22 would fit better and be about the right size? Is the 16 and 20 AN16 and An20? I'll get a slightly bigger intercooler than the stock 91 RX-7. Must keep detonation away, must keep detonation away, must ....... I really like my Hushpower 2 Mine is the quietest airplane around by far. Just trying for less weight. Thanks for the heat sheild info, based on your=20 extensive experience. And SS is a bitch to work with! George, I'll=20 talk with Burns about what they have seen with the turborotary guys Chris, No porting. Just a stock 2004 grey market engine build up by Bruce T. =20 I'll look into the preformance 46mm. I'll probably stay with the dry turbo. Mark, I remember Lynn's posting about 160 degrees being optimal and that's one of the issues. Tracy Thanks for the overlap info. I'll copy one of the "log" headers used by the after market turbo kits. This will make it MUCH easier! Ed, Looked at all that and tried in all. Had fun doing it too! Still=20 needs more cooling and I want more power. Besides, building is often fun! Don Walker N113BR -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html