X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost04.isp.att.net ([204.127.217.104] verified) by logan.com (CommuniGate Pro SMTP 5.4c3j) with ESMTP id 4950389 for flyrotary@lancaironline.net; Mon, 18 Apr 2011 21:30:19 -0400 Received-SPF: none receiver=logan.com; client-ip=204.127.217.104; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-145-79.mco.bellsouth.net[98.85.145.79]) by isp.att.net (frfwmhc04) with SMTP id <20110419012944H040017430e>; Tue, 19 Apr 2011 01:29:44 +0000 X-Originating-IP: [98.85.145.79] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Finally! The temps are under control! Date: Mon, 18 Apr 2011 21:29:56 -0400 Message-ID: <2E2EB05A84A2425592BC8503D42FDEC2@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01CBFE0F.C3D26060" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Acv+LvfT9cu6zMHCRIiTz5saS7IS+gAAfQaQ X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0009_01CBFE0F.C3D26060 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Steve, That is correct. I have a dragster scoop mounted under the cowl that has an opening that is roughly 13 inches by 3 inches. About 4 inches of the inlet is directed thru a 3 inch scat tube to the radiator and the balance goes to the oil cooler. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of stevei@carey.asn.au Sent: Monday, April 18, 2011 9:13 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Finally! The temps are under control! Hi Bill Can we confirm your setup. 5.5" diameter nostrils = 23.8 sq inch per side. You have a total of 70 sq inches in so you have another entry apart from the nostrils? Steve Izett On 19/04/2011, at 3:23 AM, Bill Bradburry wrote: Tracy, Nothing! It didn't exist! The right nostril, 5.5 inch diameter, and a 3 inch scat tube, which came off the oil cooler inlet, was all the cool air inlet I had coming to the radiator. When I added the 4 inch scat tube from the left nostril, it started to cool. I now have 27 sq inches of opening feeding the oil cooler, a total of 43 sq inches of opening feeding the radiator. The cowl outlets total 110 sq inches. So 70 inches in and 110 inches out. Pressure inside the cowl is running about 5 inches of water. If I found myself in cooler weather, I might be able to make the last cowl exit opening adjustable (cowl flap). With the current and soon expected temps I would never be able to close it, so no pressure to make it adjustable right now. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Sent: Monday, April 18, 2011 2:05 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Finally! The temps are under control! Hi Bill, I would have thought 4" scat tube would be on the small side. What was it before? Tracy On Mon, Apr 18, 2011 at 9:45 AM, Bill Bradburry wrote: I installed a 4 inch flex tube to bring air from the left nostril over to the radiator and that solved the problem! Water temps climb to around 208-9 or so on take off and then they lower to the mid 190s. Oil is running about 175. Now that I can fly without the fear that I am going to lose the temps, I can concentrate on the checks I need to do during the 40 hour flyoff! Oat was bout 88 degrees. I am flying off a Class C airport, so temps are always high before I take the active. Bill B N249B _____ The contents of this email are confidential and intended only for the named recipients of this e-mail. If you have received this e-mail in error, you are hereby notified that any use, reproduction, disclosure or distribution or the information contained in this e-mail is prohibited. Please notify the sender immediately and then delete/destroy the e-mail and any printed copies. All liability for viruses is excluded to the fullest extent of the law. ------=_NextPart_000_0009_01CBFE0F.C3D26060 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Steve,

 

That is = correct.

I have a dragster scoop mounted = under the cowl that has an opening that is roughly 13 inches by 3 inches.  = About 4 inches of the inlet is directed thru a 3 inch scat tube to the radiator and the balance goes to the oil cooler.

 

Bill B

 

From: = Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On Behalf Of = stevei@carey.asn.au
Sent: Monday, April 18, = 2011 9:13 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Finally! The temps are under control!

 

Hi Bill

 

Can we confirm your setup.

5.5" diameter nostrils =3D 23.8 sq inch per = side. 

You have a total of 70 sq inches in so you have another entry = apart from the nostrils?

 

Steve Izett

 

On 19/04/2011, at 3:23 AM, Bill = Bradburry wrote:



Tracy,

 

Nothing!  It didn’t = exist!

 

The right nostril, 5.5 inch = diameter, and a 3 inch scat tube, which came off the oil cooler inlet, was all the = cool air inlet I had coming to the radiator.  When I added the 4 inch scat = tube from the left nostril, it started to = cool.

 

I now have 27 sq inches of opening = feeding the oil cooler, a total of 43 sq inches of opening feeding the = radiator.  The cowl outlets total 110 sq inches.  So 70 inches in and 110 = inches out.  Pressure inside the cowl is running about 5 inches of = water.  If I found myself in cooler weather, I might be able to make the last = cowl exit opening adjustable (cowl flap).  With the current and soon expected = temps I would never be able to close it, so no pressure to make it adjustable = right now.

 

Bill = B

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy
Sent: Monday, April 18, = 2011 2:05 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = Finally! The temps are under control!

 

Hi Bill,
   I would have thought 4" scat tube would be on the = small side.   What was it before?

Tracy

On Mon, Apr 18, 2011 at 9:45 AM, Bill Bradburry <bbradburry@bellsouth.net>= wrote:

I installed a 4 inch flex tube to bring air from the left = nostril over to the radiator and that solved the problem!  Water temps = climb to around 208-9 or so on take off and then they lower to the mid = 190s.  Oil is running about 175.  Now that I can fly without the fear that I = am going to lose the temps, I can concentrate on the checks I need to do during = the 40 hour flyoff!  Oat was bout 88 = degrees.

I am flying off a Class C airport, so temps are always high = before I take the active. 

 

Bill B  N249B

 

 

 

 

The contents of this email are = confidential and intended only for the named recipients of this e-mail. If you have = received this e-mail in error, you are hereby notified that any use, = reproduction, disclosure or distribution or the information contained in this e-mail = is prohibited. Please notify the sender immediately and then delete/destroy = the e-mail and any printed copies. All liability for viruses is excluded to = the fullest extent of the law.

------=_NextPart_000_0009_01CBFE0F.C3D26060--