X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost01.isp.att.net ([207.115.11.51] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2453677 for flyrotary@lancaironline.net; Sat, 03 Nov 2007 10:16:17 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.51; envelope-from=keltro@att.net Received: from fwebmail17.isp.att.net ([207.115.9.157]) by bellsouth.net (frfwmhc01) with SMTP id <20071103141539H0100cbsu6e>; Sat, 3 Nov 2007 14:15:39 +0000 X-Originating-IP: [207.115.9.157] Received: from [4.245.54.163] by fwebmail17.isp.att.net; Sat, 03 Nov 2007 14:15:39 +0000 From: "Kelly Troyer" To: "Rotary motors in aircraft" Subject: Hushpower II for Tracy's 20B Date: Sat, 03 Nov 2007 14:15:39 +0000 Message-Id: <110320071415.15178.472C828A000A028D00003B4A22228869349B0A02D29B9B0EBF019D9B040A05@att.net> X-Mailer: AT&T Message Center Version 1 (Oct 30 2007) X-Authenticated-Sender: a2VsdHJvQGF0dC5uZXQ= MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_15178_1194099339_0" --NextPart_Webmail_9m3u9jl4l_15178_1194099339_0 Content-Type: text/plain Content-Transfer-Encoding: 8bit Tracy, Curious as to the inlet/outlet diameter of the Hushpower II you ordered for the 20B.........Somewhat larger I would presume........ -- Kelly Troyer "Dyke Delta"_13B ROTARY Engine "RWS"_RD1C/EC2/EM2 "Mistral"_Backplate/Oil Manifold -------------- Original message from "Tracy Crook" : -------------- Max static rpm on the 20B with 72 x 104" 3 blade prop is ~ 6000 rpm. I think the peak rpm on the day of the video was 5970. The sound of the engine, prop and windblast in the cockpit (canopy not on) is unbearable without the hearing protectors I was wearing. Ordering a HushPower II muffler for it this week. No muffler was installed during the video. Thanks for posting the video Bob. Tracy --NextPart_Webmail_9m3u9jl4l_15178_1194099339_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Tracy,

Curious as to the inlet/outlet diameter of the Hushpower II you

ordered for the 20B.........Somewhat larger I would presume........

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

-------------- Original message from "Tracy Crook" <tracy@rotaryaviation.com>: --------------

Max static rpm on the 20B with 72 x 104" 3 blade prop is ~ 6000 rpm. I think the peak rpm on the day of the video was 5970. The sound of the engine, prop and windblast in the cockpit (canopy not on) is unbearable without the hearing protectors I was wearing. Ordering a HushPower II muffler for it this week. No muffler was installed during the video.

Thanks for posting the video Bob.

Tracy

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