X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 50 [XX] (67%) BODY: email is base-64 encoded (33%) BODY: text/html email has no html tag Return-Path: Received: from mail-ew0-f213.google.com ([209.85.219.213] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3846994 for flyrotary@lancaironline.net; Fri, 11 Sep 2009 20:51:07 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.219.213; envelope-from=wdleonard@gmail.com Received: by ewy9 with SMTP id 9so717095ewy.1 for ; Fri, 11 Sep 2009 17:50:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=oW/jI9SA21JD5740vhT8HFDdb5JIP33+PXpF3KBqMJA=; b=qgCMf7e4puBDjAo5IAbBaAidAI7eW8mOyBsrFd0Fw8+J6GBfOR/Rrba1PFJqxmoYKm dmeHoBe37SRzgmA0u/Ytl0+5SeM4eVXQ+UnbhXfct2Zw3WEoberT4zAVwSEhtmLs1pcU MXK6Zr06WcFwYWmK9/w3Yi8UjhTj5cccVkffw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=NNuRnLC2o155kGU8McKCsWBC1OOFW2U9HxWjXsu9m9D+MLWPu8WV2N90xqHMTNpcfP KJPeVIfJ/ZgOtuO5lotFxV94168KcyAIKD0GQtYk8MH4dcpaG1Ybci1F2TToiKvsHODU RAIJKPReMH4CQCQyl6nufPgY3aoiAeY1XmjpY= MIME-Version: 1.0 Received: by 10.211.146.17 with SMTP id y17mr3987996ebn.43.1252716632429; Fri, 11 Sep 2009 17:50:32 -0700 (PDT) Date: Fri, 11 Sep 2009 17:50:32 -0700 Message-ID: <1c23473f0909111750o7d3c4714l6ac9580c196f82d4@mail.gmail.com> Subject: Moroso Spiral Muffler final report From: David Leonard To: Rotary motors in aircraft , "Rosales, Paul" Content-Type: multipart/alternative; boundary=001636c5a86fe15976047356d1da --001636c5a86fe15976047356d1da Content-Type: text/plain; charset=ISO-8859-1 I was pretty happy with the Moroso muffer at first. Only 3 lbs, sleek, sturdy, good looking, and toned things down perfectly. But because I never really rage around at full power, I didn't realize how much power it was costing me. Coming home from Vans homecoming I flew with a couple guys with 180hp c/s props and was sad to discover that I just couldnt keep up... gadas! I fugured it might be the new muffler, so I did a couple of test runs at WOT (number from my guages - a little faster than actual): moroso spiral No Muffler Fuel flow matched (throttled back some) D Alt 9200 9400 9400 IAS 148kts 159kts 151kts TAS 168kts 183kts 172kts RPM 5600 5950 5700 MP 27.2 30.3 26.9 Fuel Flow 12gph 15.5gph 12gph Obviously, that muffler will fly never again. Sure is good to have my power back. Maybe the hollowed out flowmaster will be back some day... But it is kinda heavy... Note, I am still a little slower than with the wastegate closed and 2-bladed prop... but close enough. -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net --001636c5a86fe15976047356d1da Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: base64 SSB3YXMgcHJldHR5IGhhcHB5IHdpdGggdGhlIE1vcm9zbyBtdWZmZXIgYXQgZmlyc3QuoCBPbmx5 IDMgbGJzLCBzbGVlaywgc3R1cmR5LCBnb29kIGxvb2tpbmcsIGFuZCB0b25lZCB0aGluZ3MgZG93 biBwZXJmZWN0bHkuoCBCdXQgYmVjYXVzZSBJIG5ldmVyIHJlYWxseSByYWdlIGFyb3VuZCBhdCBm dWxsIHBvd2VyLCBJIGRpZG4mIzM5O3QgcmVhbGl6ZSBob3cgbXVjaCBwb3dlciBpdCB3YXMgY29z dGluZyBtZS6gIENvbWluZyBob21lIGZyb20gVmFucyBob21lY29taW5nIEkgZmxldyB3aXRoIGEg Y291cGxlIGd1eXMgd2l0aCAxODBocCBjL3MgcHJvcHMgYW5kIHdhcyBzYWQgdG8gZGlzY292ZXIg dGhhdCBJIGp1c3QgY291bGRudCBrZWVwIHVwLi4uIGdhZGFzIaAgSSBmdWd1cmVkIGl0IG1pZ2h0 IGJlIHRoZSBuZXcgbXVmZmxlciwgc28gSSBkaWQgYSBjb3VwbGUgb2YgdGVzdCBydW5zIGF0IFdP VCAobnVtYmVyIGZyb20gbXkgZ3VhZ2VzIC0gYSBsaXR0bGUgZmFzdGVyIHRoYW4gYWN0dWFsKTo8 YnI+Cjxicj6goKAgoCCgIKAgoCCgIKAgoKAgoCBtb3Jvc28gc3BpcmFsoKCgoKCgoKCgoKCgIE5v IE11ZmZsZXKgoKCgoKCgoCBGdWVsIGZsb3cgbWF0Y2hlZCAodGhyb3R0bGVkIGJhY2sgc29tZSk8 YnIgY2xlYXI9ImFsbCI+RCBBbHSgoKCgoKCgoKCgoKCgoKCgIDkyMDCgoKCgoKCgoKCgoKCgoKCg oKCgoKCgoKAgOTQwMKCgoKCgoKCgoKCgoKCgoKCgIDk0MDA8YnI+SUFToKCgoKCgoKCgoKCgoKCg oKCgIDE0OGt0c6CgoKCgoKCgoKCgoKCgoKCgoKCgoCAxNTlrdHOgoKCgoKCgoKCgoKCgoCAxNTFr dHM8YnI+ClRBU6CgoKCgoKCgoKCgoKCgoKCgIDE2OGt0c6CgoKCgoKCgoKCgoKCgoKCgoKCgoCAx ODNrdHOgoKCgoKCgoKCgoKCgoCAxNzJrdHM8YnI+UlBNoKCgoKCgoKCgoKCgoKCgoCA1NjAwoKCg oKCgoKCgoKCgoKCgoKCgoKCgoKCgIDU5NTCgoKCgoKCgoKCgoKCgoKCgoCA1NzAwPGJyPk1QoKCg oKCgoKCgoKCgoKCgoKCgIDI3LjKgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgIDMwLjOgoKCgoKCg oKCgoKCgoKCgoKAgMjYuOTxicj4KRnVlbCBGbG93oKCgoKCgoKCgIDEyZ3BooKCgoKCgoKCgoKCg oKCgoKCgoKCgoCAxNS41Z3BooKCgoKCgoKCgoKCgoCAxMmdwaDxicj48YnI+T2J2aW91c2x5LCB0 aGF0IG11ZmZsZXIgd2lsbCBmbHkgbmV2ZXIgYWdhaW4uIFN1cmUgaXMgZ29vZCB0byBoYXZlIG15 IHBvd2VyIGJhY2suoCBNYXliZSB0aGUgaG9sbG93ZWQgb3V0IGZsb3dtYXN0ZXIgd2lsbCBiZSBi YWNrIHNvbWUgZGF5Li4uoCBCdXQgaXQgaXMga2luZGEgaGVhdnkuLi48YnI+Cjxicj5Ob3RlLCBJ IGFtIHN0aWxsIGEgbGl0dGxlIHNsb3dlciB0aGFuIHdpdGggdGhlIHdhc3RlZ2F0ZSBjbG9zZWQg YW5kIDItYmxhZGVkIHByb3AuLi6gIGJ1dCBjbG9zZSBlbm91Z2guPGJyPi0tIDxicj5EYXZpZCBM ZW9uYXJkPGJyPjxicj5UdXJibyBSb3RhcnkgUlYtNiBONFZZPGJyPjxhIGhyZWY9Imh0dHA6Ly9O NFZZLlJvdGFyeVJvc3Rlci5uZXQiPmh0dHA6Ly9ONFZZLlJvdGFyeVJvc3Rlci5uZXQ8L2E+PGJy Pgo8YSBocmVmPSJodHRwOi8vUm90YXJ5Um9zdGVyLm5ldCI+aHR0cDovL1JvdGFyeVJvc3Rlci5u ZXQ8L2E+PGJyPgo= --001636c5a86fe15976047356d1da--