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 5.4c2o) with ESMTP id 4889308 for flyrotary@lancaironline.net; Thu, 03 Mar 2011 11:32:09 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.217.104; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-142-10.mco.bellsouth.net[98.85.142.10]) by isp.att.net (frfwmhc04) with SMTP id <20110303163132H040017ieie>; Thu, 3 Mar 2011 16:31:32 +0000 X-Originating-IP: [98.85.142.10] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: Coolant routing Date: Thu, 3 Mar 2011 11:31:36 -0500 Message-ID: <93846A281186443C81A0C532F3077212@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000F_01CBD996.8E7E8850" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcvZrJSML2aguM1aQIGO0YbJq6OGJQAEnTpA X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_000F_01CBD996.8E7E8850 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Tracy, I am convinced. I thought that the coolant flowed around from the intake side to the spark plug side and that was cold to hot side. Please straighten me out on how it flows and etc.. Ed and Mark, I have the Renesis. I expected that the EGT from the side port exhausts would be cooler than the PP exhausts on the 13B and 20B? I think I expected about 13-1400 degrees with the difference going into the coolant. Ernest, Good idea but I am not certain how difficult it would be to squeeze that heater hose shut. It is pretty stiff. I could probably reduce the flow, but I would be concerned about damage if I squeezed it completely shut. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Sent: Thursday, March 03, 2011 9:09 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Coolant routing One correction. You are NOT bypassing the hot side of the engine (combustion chambers) You ARE bypassing the radiator and putting the hottest coolant back into the engine. Install the valve! Tracy On Thu, Mar 3, 2011 at 8:59 AM, Bill Bradburry wrote: I have a heater hose connected from the stock outlet from the rear iron and the other end of the hose is connected to the inlet to the water pump housing. I don't currently have a heat exchanger in this hose nor do I have a valve to shut off the flow of water. I assume that it is flowing full bore any time the engine is running. 5/8 inch hose. Naturally this water is bypassing the hot side of the engine as well as the radiator. I would like some opinions as to what effect this might have on my cooling temperatures. Has anyone done this, then installed a valve to shut off the flow and seen the effect? I have a valve, but didn't want to put it in till I design the rest of the heater system. What say ye? Yesterday morning, OAT about 70, water temp about 170 when I took the active, climbed to about 205 getting to pattern altitude, then cooled to about 199 as I went around the pattern. I left of a little sightseeing trip got up to 2500 (low clouds) flew over the house, (the wife heard me coming and ran outside..so much for thinking it was quiet! She said it sounds like an airplane on steroids. I take that as a complement) The temp seemed pretty stable around 200, but it did climb to 210 one time for a short period for no reason that I could figure then came back down. EGT I thought was pretty high, around 1600. Mixture about two bars above the midpoint. Bill B -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html ------=_NextPart_000_000F_01CBD996.8E7E8850 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Tracy,

I am convinced.  =

 

I thought that the coolant flowed = around from the intake side to the spark plug side and that was cold to hot side.  Please straighten me out on how it flows and = etc..

 

 

Ed and = Mark,

 

I have the Renesis.  I = expected that the EGT from the side port exhausts would be cooler than the PP exhausts = on the 13B and 20B?  I think I expected about 13-1400 degrees with the = difference going into the coolant.

 

Ernest,

=

 

Good idea but I am not certain how difficult it would be to squeeze that heater hose shut.  It is = pretty stiff.  I could probably reduce the flow, but I would be concerned = about damage if I squeezed it completely shut.

 

 

Bill B

 

From: = Rotary motors in aircraft = [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy
Sent: Thursday, March 03, = 2011 9:09 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: = Coolant routing

 

One = correction.  You are NOT bypassing the hot side of the engine (combustion = chambers)   You ARE bypassing the radiator and putting the hottest coolant back into = the engine.  

Install the valve!

Tracy

On Thu, Mar 3, 2011 at 8:59 AM, Bill Bradburry <bbradburry@bellsouth.net>= wrote:

I have a heater hose connected from the stock outlet from the = rear iron and
the other end of the hose is connected to the inlet to the water = pump
housing.  I don't currently have a heat exchanger in this hose nor = do I have
a valve to shut off the flow of water.  I assume that it is flowing = full
bore any time the engine is running.  5/8 inch hose. =  Naturally this water
is bypassing the hot side of the engine as well as the radiator.
I would like some opinions as to what effect this might have on my = cooling
temperatures.  Has anyone done this, then installed a valve to shut = off the
flow and seen the effect?
I have a valve, but didn't want to put it in till I design the rest of = the
heater system.
What say ye?

Yesterday morning, OAT about 70, water temp about 170 when I took = the
active, climbed to about 205 getting to pattern altitude, then cooled = to
about 199 as I went around the pattern.  I left of a little = sightseeing trip
got up to 2500 (low clouds) flew over the house, (the wife heard me = coming
and ran outside..so much for thinking it was quiet!  She said it = sounds like
an airplane on steroids. I take that as a complement)

The temp seemed pretty stable around 200, but it did climb to 210 one = time
for a short period for no reason that I could figure then came back = down.
EGT I thought was pretty high, around 1600.  Mixture about two bars = above
the midpoint.

Bill B


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