X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from smtp126.sbc.mail.sp1.yahoo.com ([69.147.65.185] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with SMTP id 4116064 for flyrotary@lancaironline.net; Mon, 08 Feb 2010 13:04:30 -0500 Received-SPF: none receiver=logan.com; client-ip=69.147.65.185; envelope-from=JLuckey@pacbell.net Received: (qmail 54340 invoked from network); 8 Feb 2010 18:03:55 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=pacbell.net; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:X-Mailer:Thread-index:X-MimeOLE; b=UpzPsp2brnZghy50JN5MLjBGLE9rE7RddyDr7TfsFht/954VQ/RqmaSKyuuZoU2NII5sq/RQmKpUsMvawrRVGFzC1N3CO7lCKiUuTvCTRpxiFC31PSlBwlNW7El6BA+u0PRI+x5TeTxJQrbegaUTTC+dOld7l145e7c+r3+YsR4= ; Received: from adsl-76-194-244-6.dsl.lsan03.sbcglobal.net (JLuckey@76.194.244.6 with login) by smtp126.sbc.mail.sp1.yahoo.com with SMTP; 08 Feb 2010 10:03:54 -0800 PST X-Yahoo-SMTP: Rlj_3EGswBCwtPCKshxPrOwNc_mKhod146WmwQ8HoqE- X-YMail-OSG: U5UdT1gVM1l2jaj1_msBhV3Q3eVdXMzUQSMBL5kPUzWBI3tCPejlqnM7IJGJp07Aph8Nc6AzXgB4TnNYcukPi_lrFOFBNQC51JbLPm310HElPp97d315LmN12tvotfqMrPqywPqTmwZXx13IdiqDWanSelxbxQFT90c5I6A2Mo6oWU9oyM8Evsz7CpATr8CouiHXO.ZNBwg9Oguq20ZwoQRLTIrtnYZksfiMdYwLkcFCnL8ceGoA60zO5vyOknpdLQhnqIgRdSo3fP_xayZ90P.zQi8UtiHqIszLsh50oPM4yLWhzlll8Es- X-Yahoo-Newman-Property: ymail-3 From: "Jeff Luckey" To: "'Rotary motors in aircraft'" Subject: [Re][FlyRotary] More throttle now Scotty, we need it now Date: Mon, 8 Feb 2010 10:03:47 -0800 Message-ID: <004e01caa8e9$0fe40ad0$6701a8c0@dcshq1> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_004F_01CAA8A6.01C0CAD0" X-Mailer: Microsoft Office Outlook 11 Thread-index: Acqo6Q+Lfz1d33RJTNWnhDlJ3kqqig== X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_004F_01CAA8A6.01C0CAD0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Lynn Hanover said: The port timing on the Renesis appears to be quite timid. I would like to see a bit of a developement program for an aircraft specific engine with earlier opening and later closing of the intake port. Maintaining zero overlap is of no value in an airplane, and a big improvement can be had with just a die grinder. Lynn, You've probably forgotten more about engines that I will ever know! Based on your quote above (I'm probably dangerous w/ a die grinder), but the kind of mods you are suggesting seem pretty straight forward. (besides, if I screw it up, it only costs me a rotor housing ;) My questions are: Q1. If you start to reshape intake ports on a Renesis, how much can you do before you get into the water jacket? Q2. In a well-engineered aircraft installation, how much HP is a Renesis making? In and RX-8 they are supposed to make about 225 HP. Are aircraft installations getting that much? Q3. If mods that you suggest above are made to get intake/exhaust overlap, how much increase in HP can be expected in an aircraft installation? Thanks for sharing your expertise Jeff Luckey ------=_NextPart_000_004F_01CAA8A6.01C0CAD0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Lynn Hanover = said:

The port timing on the Renesis = appears to be quite timid. I would like to see a bit of a developement program for = an aircraft specific engine with earlier opening and later closing of the = intake port. Maintaining zero overlap is of no value in an airplane, and a big improvement can be had with just a die = grinder.

Lynn,

You’ve probably forgotten more about engines that I will ever = know!

Based on your quote above (I’m probably dangerous w/ a die grinder), but = the kind of mods you are suggesting seem pretty straight forward. = (besides, if I screw it up, it only costs me a rotor housing ;) =

My questions are:

Q1. If you start to reshape intake ports on a Renesis, how much can you do = before you get into the water jacket?

Q2. In a well-engineered aircraft installation, how much HP is a Renesis = making? In and RX-8 they are supposed to make about 225 HP. Are aircraft installations getting that much?

Q3. If mods that you suggest above are made to get intake/exhaust overlap, how = much increase in HP can be expected in an aircraft = installation?

Thanks for sharing your expertise

Jeff Luckey

------=_NextPart_000_004F_01CAA8A6.01C0CAD0--