X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from rv-out-0506.google.com ([209.85.198.238] verified) by logan.com (CommuniGate Pro SMTP 5.2.10) with ESMTP id 3322863 for flyrotary@lancaironline.net; Sat, 29 Nov 2008 15:10:57 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.198.238; envelope-from=rwstracy@gmail.com Received: by rv-out-0506.google.com with SMTP id f6so2233647rvb.7 for ; Sat, 29 Nov 2008 12:10:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:sender :to:subject:in-reply-to:mime-version:content-type:references :x-google-sender-auth; bh=EGZlZMalOk5jBklrOLEolIfeJ2pIG/OXcwbodOreoFQ=; b=TjYVJR/UXpDhZxrREvNsU/V3v0PZWjxpVhsP85LBk8znEIGa7cOfDqcq494z1z2JOI aLbVb7E7I4YM28keaDYoQSGjVXs80qMEfHucrFdk0T05UzE9vRez1QCsi88KMu5BM/8m 9TkmMCS9zSkv2ZrcnDisVuOg99NuS7w/dj+Cc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:in-reply-to:mime-version :content-type:references:x-google-sender-auth; b=j2LvKaA3fP8SmHq5xuE3rpl6ay1uqk53CYYPRcE2oDcfy9se2FVEm1q55W6/yHOQk8 OQcYd0mMkoTD7yDsyENcXXNkx6fFdoCIZ7RycrhC9YoncObvcDyzHaYrCE216D8aMNGK V+aaieepUAj+cvFYa1pVtxAxIkK9zPoD3QojU= Received: by 10.141.89.13 with SMTP id r13mr4377876rvl.214.1227989423229; Sat, 29 Nov 2008 12:10:23 -0800 (PST) Received: by 10.140.192.2 with HTTP; Sat, 29 Nov 2008 12:10:23 -0800 (PST) Message-ID: <1b4b137c0811291210q1cd1b8d9u5d48258b114cf1cd@mail.gmail.com> Date: Sat, 29 Nov 2008 15:10:23 -0500 From: "Tracy Crook" Sender: rwstracy@gmail.com To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Renesis fuel burn In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_32655_9059034.1227989423228" References: X-Google-Sender-Auth: 2f5d445bd7d8c3bd ------=_Part_32655_9059034.1227989423228 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline If you haven't calibrated the EM2 fuel flow yet, the GPH reading does not mean anything. Don't make any decisions based on that reading. Calibrating the fuel flow is the most difficult and time consuming parts of EM2 setup. That's the down side of doing it with such an inexpensive flow sensor ($0.00) since it has none. The other option is to use a Floscan flow sensor with the EM2 but they are pricy. At 30" of manifold pressure and best power mixture setting and 6400 RPM you should get a fuel burn somewhere around 15 - 18 GPH. The exact amount will depend on other factors like exact mixture setting, your intake manifold, exhaust system, air temp, etc. Tracy Crook On Thu, Nov 27, 2008 at 6:32 PM, Rino wrote: > Where can I get information on fuel burn and power for the renesis? > The maximum fuel burn I can get on takeoff is 11.7 gph (reading on the EM2) > at 64 00 rpm. The EM2 is not fully calibrated yet! I think I should be > able to get a higher fuel burn than that. > > The other part of the problem. What should be the intake manifold runner > length on the Renesis. Best power has to be between 6000 and 6500 rpm > limited by the propeller and redrive configuration. I cannot use more than > 65" dia. prop. > > The present runner length is 17" and I think it is not enough. > > Rino Lacombe > Renesis powered Glass Goose > ------=_Part_32655_9059034.1227989423228 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline If you haven't calibrated the EM2 fuel flow yet, the GPH reading does not mean anything.  Don't make any decisions based on that reading.   Calibrating the fuel flow is the most difficult and time consuming parts of EM2 setup.   That's the down side of doing it with such an inexpensive flow sensor ($0.00) since it has none.   The other option is to use a Floscan flow sensor with the EM2  but they are pricy.

  At 30" of manifold pressure and best power mixture setting and 6400 RPM you should get a fuel burn somewhere around 15 - 18 GPH.  The exact amount will depend on other factors like exact mixture setting, your intake manifold, exhaust system, air temp, etc.

Tracy Crook

On Thu, Nov 27, 2008 at 6:32 PM, Rino <lacombr@nbnet.nb.ca> wrote:
Where can I get information on fuel burn and power for the renesis?
The maximum fuel burn I can get on takeoff is 11.7 gph (reading on the EM2) at 64 00 rpm.   The EM2 is not fully calibrated yet!   I think I should be able to get a higher fuel burn than that.
 
The other part of the problem.  What should be the intake manifold runner length on the Renesis.  Best power has to be between 6000 and 6500 rpm limited by the propeller and redrive configuration.   I cannot use more than 65" dia. prop.
 
The present runner length is 17" and I think it is not enough.
 
Rino Lacombe
Renesis powered Glass Goose

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