X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mxo5.broadbandsupport.net ([209.55.3.85] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3733508 for flyrotary@lancaironline.net; Fri, 26 Jun 2009 08:45:46 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.55.3.85; envelope-from=candtmallory@cebridge.net Return-Path: Received: from [24.32.42.145] ([24.32.42.145:62138] helo=atmail9.ibbsonline.com) by mxo5.broadbandsupport.net (ecelerity 2.1.1.23 r(18304)) with ESMTP id BF/42-31834-FB2C44A4 for ; Fri, 26 Jun 2009 08:44:47 -0400 Message-ID: Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" MIME-Version: 1.0 From: To: flyrotary@lancaironline.net Subject: Fwd: Re: Engine problem/ I need help Reply-To: candtmallory@cebridge.net Date: Fri, 26 Jun 2009 08:44:46 -0400 X-Uidl: 1245989247.H316014P9141.cebridge.net X-Mailer: AtMail 4.11 =0D

----- Original Message -----
From: <candtmallory@cebridge.net>
To: 'Ed Anderson' <eanderson@carolina.rr.com>
Sent: Fri Jun 26 0:07
Subject: Fwd: Re: Engine problem?

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Thanks all for the quick responses!

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I was reluctant to run the engine again, but it sounds like that is what= I need to do to get more data points. I'll go out tomorrow and do so= me lower power runs and see what I get.

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To answer some of the questions:

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I have about 1.5 hours total on the engine right now. I've done th= e mode 3,2,1 and 9 (auto tune). Everything looked good. With ab= out 1 hour engine time, I started teh high power runs. I was at about= 30 min total high power time when this happened.

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RD1C (2.85:1) PSRU with a huge CATO prop.

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Standard Renesis Red and Blue injectors, I'll have to measure the thrott= le body, the exhaust is short. It comes out and faces fron, then= turns 180 down and aft to the Hushpower II muffler, then 90 down and out t= he cowl. I'll take a pic tomorrow.

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I stopped the high power runs when H2O got to 200*, oil was always about= 10* cooler.

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I also had to do the short runs to fill the radiator. I checked it= for full by feeling heat at the top.

I'll give the oil pressure another look tomorrow, and get exact numbers at = different rpms.

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No noticable clank, bang, etc. The rpm just dropped off 200.

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THanks,

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Chris

On Thu Jun 25 23:09 , 'Ed Anderson' <eanderson@carolina.rr.com> se= nt:

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Hi Chris,
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Need some more particularizes about your installa= tion.
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So its really hard to decide what might be the pr= oblem without more data. I presume as best you could tell nothing hap= pened (clank, bang, backfire) when this unexpected reduction in rpm occurre= d?
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One thing you might want to check is your ignitio= n timing static timing alignment. IF the clamp bolt on the distributo= r or I believe the Renesis use a pulley ignition timing sensor becomes loos= e during the run and the timing shifted that could cause such a sudden chan= ge. Just another thing to check.
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The first thing is to determine whether you reall= y have a problem or did something change, fuel flow, air flow, muffler?&nbs= p; Another possibility is if the heat stress caused your muffler to partial= ly collapse, that could cut your power.
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Best Regards
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Ed
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Ed Anderson
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Rv-6A N494BW Rotary Powered
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Matthews, NC
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eanderson@carolina.rr.com
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http://www.an= dersonee.com
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h= ttp://www.dmack.net/mazda/index.html=0D
http://www.flyrotar= y.com/
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http://members.cox.net/rogersda/rotary/configs.htm#N494BW
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htt= p://www.rotaryaviation.com/Rotorhead%20Truth.htm =
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