Return-Path: Received: from [204.127.202.59] (HELO sccrmhc11.comcast.net) by logan.com (CommuniGate Pro SMTP 4.3c3) with ESMTP id 824360 for flyrotary@lancaironline.net; Sat, 26 Mar 2005 22:15:22 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.202.59; envelope-from=kenpowell@comcast.net Received: from 204.127.205.147 ([204.127.205.147]) by comcast.net (sccrmhc14) with SMTP id <2005032703143401400j9jsce>; Sun, 27 Mar 2005 03:14:34 +0000 Received: from [68.51.45.41] by 204.127.205.147; Sun, 27 Mar 2005 03:14:34 +0000 From: kenpowell@comcast.net To: "Rotary motors in aircraft" Subject: [FlyRotary]RX8 rotor weight Date: Sun, 27 Mar 2005 03:14:34 +0000 Message-Id: <032720050314.5221.4246251A000B595700001465220076219404040A99019F020A05@comcast.net> X-Mailer: AT&T Message Center Version 1 (Dec 17 2004) X-Authenticated-Sender: a2VucG93ZWxsQGNvbWNhc3QubmV0 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_5221_1111893274_0" --NextPart_Webmail_9m3u9jl4l_5221_1111893274_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit I just found this article in Ward's Auto World (Mar 1, 2002) stating that the Renesis rotor is 14% lighter - that would make the Renesis rotor 8.2 lbs, not the 8.7 that I stated earlier. "Design innovations made it possible to eliminate the twin turbochargers employed by the current 13B rotary engine. By moving the exhaust ports from the trochoidal housing to the side housing of the rotor chamber, the overlap between the exhaust and intake port openings was eliminated — a crucial emissions and power-generating factor. Meanwhile, reducing rotor weight contributes to higher output of about 250 hp and torque of 159 lb.-ft. (216 Nm) — figures that are roughly equivalent to the 280 hp and 152 lb.-ft. (206 Nm) of the twin-turbo 13B in the existing RX-7 still sold in Japan. Rotor weight was trimmed by 14%." Ken Powell Bryant, Arkansas 501-847-4721 --NextPart_Webmail_9m3u9jl4l_5221_1111893274_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

I just found this article in Ward's Auto World (Mar 1, 2002) stating that the Renesis rotor is 14% lighter - that would make the Renesis rotor 8.2 lbs, not the 8.7 that I stated earlier.

"Design innovations made it possible to eliminate the twin turbochargers employed by the current 13B rotary engine. By moving the exhaust ports from the trochoidal housing to the side housing of the rotor chamber, the overlap between the exhaust and intake port openings was eliminated — a crucial emissions and power-generating factor. Meanwhile, reducing rotor weight contributes to higher output of about 250 hp and torque of 159 lb.-ft. (216 Nm) — figures that are roughly equivalent to the 280 hp and 152 lb.-ft. (206 Nm) of the twin-turbo 13B in the existing RX-7 still sold in Japan. Rotor weight was trimmed by 14%."

Ken Powell
Bryant, Arkansas
501-847-4721

--NextPart_Webmail_9m3u9jl4l_5221_1111893274_0--