X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost03.isp.att.net ([207.115.11.53] verified) by logan.com (CommuniGate Pro SMTP 5.3.2) with ESMTP id 4132939 for flyrotary@lancaironline.net; Sun, 21 Feb 2010 19:33:48 -0500 Received-SPF: none receiver=logan.com; client-ip=207.115.11.53; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-230-68-40.mco.bellsouth.net[74.230.68.40]) by isp.att.net (frfwmhc03) with SMTP id <20100222003312H0300bm0j7e>; Mon, 22 Feb 2010 00:33:13 +0000 X-Originating-IP: [74.230.68.40] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: Some assistance Please! Date: Sun, 21 Feb 2010 19:33:12 -0500 Message-ID: <38424D2D271F4AE397C63E050F2AC987@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01CAB32C.B56D1BC0" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Acqwuf6TNmq95CaGQ4WW92XiQjWSTgCma+lA X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_000D_01CAB32C.B56D1BC0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit First, some news.. I recently redesigned my cooling system due to unable to run the engine for more than about 20 min at high idle without it overheating. Now I have the good problem. Granted it was cold..low 60s. But I was not able to get my oil above about 145 and the water above 185! I ran it full bore till I got tired of holding the brakes! I still need to do some work balancing the air between the oil and water. And I didn't have the cowl on, so the problem is not completely solved, but I am on the right track! Now the question. I have the Renesis that has the very small red primaries and the very large blue secondaries. I recently changed them to all yellow. This removes the need to balance the flow so much when it stages. The total output is very similar between the two systems. Now I have a larger flow when on the primaries and the secondaries kick in with a smaller change. I removed the large secondary option using mode 6. So I checked the mixture at 22 inches manifold pressure and it seemed fine with mixture at center setting so I deemed that I didn't need to change the fuel flow with mode 3. BUT when I started to let it auto tune, I noticed that it was setting all the bins to -127 until after it staged, then it started to build the graph that you normally see. It stages at 20 inches manifold pressure. Is that the recommended pressure? I expected 15"?? So my question is.Should I set the mode 3 at a lower setting? This will affect the entire range so I am concerned that I will not have enough fuel at WOT if I do that. Should I make an adjustment using Mode 2? I don't really understand what dynamic range is?? What are your thoughts? Thanks, Bill B ------=_NextPart_000_000D_01CAB32C.B56D1BC0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

 First, some news..

I recently redesigned my cooling system due to unable to run the = engine for more than about 20 min at high idle without it overheating.  = Now I have the good problem.  Granted it was cold..low 60s.  But I was = not able to get my oil above about 145 and the water above 185!   I ran = it full bore till I got tired of holding the brakes!  I still need to = do some work balancing the air between the oil and water.  And I = didn’t have the cowl on, so the problem is not completely solved, but I am on the = right track!

 

Now the question.

I have the Renesis that has the very small red primaries and the = very large blue secondaries.  I recently changed them to all = yellow.  This removes the need to balance the flow so much when it stages.  The = total output is very similar between the two systems.  Now I have a = larger flow when on the primaries and the secondaries kick in with a smaller = change.  I removed the large secondary option using mode = 6.

So I checked the mixture at 22 inches manifold pressure and it = seemed fine with mixture at center setting so I deemed that I didn’t need = to change the fuel flow with mode 3.  BUT when I started to let it = auto tune, I noticed that it was setting all the bins to -127 until after it = staged, then it started to build the graph that you normally see.  It stages at = 20 inches manifold pressure.  Is that the recommended pressure?  = I expected 15”??

So my question is…Should I set the mode 3 at a lower = setting?  This will affect the entire range so I am concerned that I will not have = enough fuel at WOT if I do that.  Should I make an adjustment using Mode = 2?  I don’t really understand what dynamic range is??   What = are your thoughts?

 

Thanks,

Bill B

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