X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [66.219.56.245] (HELO mail.qnsi.net) by logan.com (CommuniGate Pro SMTP 5.3.11) with ESMTP id 4647507 for flyrotary@lancaironline.net; Sun, 19 Dec 2010 21:15:10 -0500 Received-SPF: none receiver=logan.com; client-ip=66.219.56.245; envelope-from=bhughes@qnsi.net Return-Receipt-To: "Bobby J. Hughes" Subject: RE: [FlyRotary] Re: Fw: Water temps MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CB9FEC.33AD3F22" Date: Sun, 19 Dec 2010 20:14:25 -0600 Message-ID: <74120FDE88CAFE4DBDA8814BCE20A3F328359C@qnsi-mail.qnsi.net> Disposition-Notification-To: "Bobby J. Hughes" Content-class: urn:content-classes:message X-MS-Has-Attach: X-MimeOLE: Produced By Microsoft Exchange V6.5 X-MS-TNEF-Correlator: Thread-Topic: [FlyRotary] Re: Fw: Water temps thread-index: Acuf5GBP5N6naDzQQ26zp/7rmUXQkAABtMbg References: From: "Bobby J. Hughes" To: "Rotary motors in aircraft" This is a multi-part message in MIME format. ------_=_NextPart_001_01CB9FEC.33AD3F22 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Al, =20 The only pressure charts I have found are for the coolant. Nothing for the oil. Do you have a link?=20 =20 Bobby ________________________________ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al Gietzen Sent: Sunday, December 19, 2010 7:18 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Fw: Water temps I have the A43-330 MoCal. Plumbed on the outlet of the rad where the coolant temp may typically be 160F at high power and the oil temp (at engine out) may be 220; and it handles roughly 30% of the oil heat load on the 20B. =20 Be aware that this cooler; like any off-the-shelf unit, is designed for the lower oil flow rates of piston engines. I'd not recommend plumbing this for full flow from the rotary unless you are willing to accept 20-30 psi pressure drop. =20 =20 Download the performance charts - these are not high capacity units =20 Al =20 =20 Subject: [FlyRotary] Re: Fw: Water temps =20 Chrissi, I did not see an answer to your question about "Mocal" water to oil coolers...............It has been=20 reported previously that some have used the "Mocal" model A43-330 cooler with success........ Some have had custom units built by Ed Klepis at "Tech -Weld" or other suppliers........... I have=20 had a 330 for some time but alas I am still grounded !!.............<:).........See PDF below..........=20 =20 =20 http://97.74.103.94/files/laminova.pdf =20 Kelly Troyer "DYKE DELTA JD2" (Eventually) "13B ROTARY"_ Engine "RWS"_RD1C/EC2/EM2 "MISTRAL"_Backplate/Oil Manifold "TURBONETICS"_TO4E50 Turbo =20 =20 =20 =20 =09 ________________________________ From: "CozyGirrrl@aol.com" To: keltro@att.net Sent: Mon, December 13, 2010 12:52:06 PM Subject: Re: Fw: [FlyRotary] Re: Fw: Water temps This is where I get confused: =20 said previously,=20 -ideal water temp =3D 160*~180*F -ideal oil temp =3D 160*F =20 If we are cooling oil with water that is at best hotter than the ideal temp of the oil, then are we not adding heat to it rather than removing it?=20 =20 If we are trying to cool oil, why would we feed the highest temp water to the oil/water cooler rather than the coolest temp water by tapping into the pump housing where it enters the block? =20 Based on feedback, the water entering the block may be as low as 150*~160*F, would this be cool enough to do an adequate job of cooling the oil? =20 Also, which model of Mocal is being used? =20 ...Chrissi =20 ------_=_NextPart_001_01CB9FEC.33AD3F22 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Al,

The only pressure charts I have found are for the = coolant.=20 Nothing for the oil. Do you have a link?

Bobby

From: Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On Behalf Of Al=20 Gietzen
Sent: Sunday, December 19, 2010 7:18 PM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Fw: Water=20 temps

I have the = A43-330=20 MoCal. Plumbed on the outlet of the rad where the coolant temp may = typically be=20 160F at high power and the oil temp (at engine out) may be 220; and it = handles=20 roughly 30% of the oil heat load on the 20B.

Be aware = that this=20 cooler; like any off-the-shelf unit, is designed for the lower oil flow = rates of=20 piston engines. I’d not recommend plumbing this for full flow from = the rotary=20 unless you are willing to accept 20-30 psi pressure drop. =20

Download = the=20 performance charts – these are not high capacity = units

Al

Subject:=20 [FlyRotary] Re: Fw: Water temps

Chrissi,

I did = not see an=20 answer to your question about "Mocal" water to oil = coolers...............It=20 has been

reported previously that = some have=20 used the "Mocal" model A43-330 cooler with=20 success........

Some have had = custom=20 units built by Ed Klepis at "Tech -Weld" or other=20 suppliers........... I have

had a 330 for some time = but alas I=20 am still grounded !!.............<:).........See PDF=20 below..........

http://97.74.103.94/files= /laminova.pdf

Kelly=20 Troyer
"DYKE DELTA=20 JD2" = (Eventually)

"13B ROTARY"_=20 Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil=20 Manifold

"TURBONETICS"_TO4E50=20 Turbo

From: "CozyGirrrl@aol.com" <CozyGirrrl@aol.com>
To: keltro@att.net
Sent: Mon, December 13, 2010 = 12:52:06=20 PM
Subject: Re: = Fw:=20 [FlyRotary] Re: Fw: Water temps

This is = where I=20 get confused:

said = previously,=20

-ideal = water temp=20 =3D 160*~180*F

-ideal = oil temp =3D=20 160*F

If we = are cooling=20 oil with water that is at best hotter than the ideal temp of the = oil, then=20 are we not adding heat to it rather than removing it?=20

If we = are trying=20 to cool oil, why would we feed the highest temp water to the = oil/water=20 cooler rather than the coolest temp water by tapping into the pump = housing=20 where it enters the block?

Based on = feedback,=20 the water entering the block may be as low as 150*~160*F, would this = be cool=20 enough to do an adequate job of cooling the = oil?

Also, = which model=20 of Mocal is being used?

...Chrissi

------_=_NextPart_001_01CB9FEC.33AD3F22--