Return-Path: Received: from smtp101.mail.sc5.yahoo.com ([216.136.174.139] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with SMTP id 574321 for flyrotary@lancaironline.net; Mon, 20 Dec 2004 13:29:52 -0500 Received-SPF: none receiver=logan.com; client-ip=216.136.174.139; envelope-from=prvt_pilot@yahoo.com Received: from unknown (HELO stevehome) (prvt?pilot@24.136.229.34 with login) by smtp101.mail.sc5.yahoo.com with SMTP; 20 Dec 2004 18:29:21 -0000 Reply-To: From: "Steve Brooks" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Oil cooler mount updated pictures Date: Mon, 20 Dec 2004 13:27:50 -0500 Message-ID: <007701c4e6c1$9d5c1230$6b01a8c0@workgroup.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0078_01C4E697.B4860A30" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.6604 (9.0.2911.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_0078_01C4E697.B4860A30 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit MessageRusty, One alternative to the Mazda cooler may be a Setrab oil cooler. They are used allot by NASCAR for their applications, and are suppose to be very durable. I'm not using this cooler, but I know someone who is using one on a rotary. Here is a link that will show you what they have. http://www.bakerprecision.com/setrab.htm Steve Brooks -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Russell Duffy Sent: Monday, December 20, 2004 12:57 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Oil cooler mount updated pictures 1. Used the early RV-4 FP prop cowl (40" FW to prop flange) which is about 1.5" longer than current version 2. Used the RX-5 Cosmo oil cooler which is shorter but wider than the RX-7 cooler, and has ports more conveniently located than the RX-7 cooler. It was a gift from my brother Barry who owned the RX-5 donor car. Thanks Tracy. That certainly takes the mystery out of it. I originally had the RV-3 cowl (they're now the same, but you trim the RV-3 shorter), and Fred made the mount so the prop would end up where the Lycoming would have been on the stock mount. When I replaced the cowl, I got the universal RV-3/-4 cowl, and decided to leave it full length, rather than trimming it several inches to make it the same as the original RV-3 cowl. I made up the difference with a very nice Saber prop hub extension. If you have the same length cowl, and no prop extension, then your engine is several inches farther from the FW than mine. I just made a note to measure my FW to prop flange distance, so that will confirm it. I would love to put the cooler under the engine like Finn has it, but there's just no way with my exhaust in the way. I'm pretty happy with the exhaust system, so I don't plan to change that, which means I have to come up with another solution. -I could easily fit one of the FD coolers, but I don't think that would be big enough. -I could possibly fit an oil to water heat exchanger, and use the original oil cooler location for a 3rd water cooler. Don't care too much for this idea, mostly due to the extra weight, and complexity of hoses. Also, I'd still have to worry about bursting the oil cooler on the exchanger unless I knew is was robust enough. -I could use a stock 2nd gen cooler, and let the back end dip under the exhaust pipes. This would drop the rear edge of the cowl a few inches, which would add some drag. On the other hand, it would block some high speed air from hitting the muffler, and add to the cooling exit area. Another downside is that it's still putting the oil cooler very close to, and directly in front of the exhaust. -Finally, I could find another type of oil cooler, which would be closer to the size of the evap core. In the old archives, Mike Wills mentioned Fluidyne. I had one of their radiators in my FD, and it was very well built. Here's a link to the oil cooler family I'm thinking about. They look pretty good to me. What do you think? http://www.fluidyne.com/pl_theoc.html Thanks, Rusty (waiting for a giant estimate for replacing my dead heat pump) ------=_NextPart_000_0078_01C4E697.B4860A30 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Message
Rusty,
One alternative to the Mazda = cooler may be a=20 Setrab oil cooler.  They are used allot by NASCAR for their = applications,=20 and are suppose to be very durable.  I'm not using this cooler, but = I know=20 someone who is using one on a rotary.
 
Here is a link that will show you = what they=20 have.
 
http://www.bakerprecisi= on.com/setrab.htm
 
 
Steve Brooks
 
-----Original Message-----
From: Rotary motors = in=20 aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of = Russell=20 Duffy
Sent: Monday, December 20, 2004 12:57 PM
To: = Rotary=20 motors in aircraft
Subject: [FlyRotary] Re: Oil cooler mount = updated=20 pictures

1.  Used the early RV-4 FP prop cowl (40" FW to prop = flange)=20 which is about 1.5" longer than current version  
2.  Used the RX-5 Cosmo oil cooler which = is=20 shorter but wider than the RX-7 cooler, and has ports more = conveniently=20 located than the RX-7 cooler.  It was a gift from my brother = Barry who=20 owned the RX-5 donor car. 
 
 
Thanks Tracy.  That certainly takes the mystery out of=20 it.  I originally had the RV-3 cowl (they're now the same, = but you=20 trim the RV-3 shorter), and Fred made the mount so the prop would = end=20 up where the Lycoming would have been on the stock mount.  = When I=20 replaced the cowl, I got the universal RV-3/-4 cowl, and decided = to leave=20 it full length, rather than trimming it several inches to make it the = same as=20 the original RV-3 cowl.  I made up the difference with a = very nice=20 Saber prop hub extension.  If you have the same length cowl, and = no prop=20 extension, then your engine is several inches farther from the FW = than=20 mine.  I just made a note to measure my FW to prop flange = distance, so=20 that will confirm it. 
 
I=20 would love to put the cooler under the engine like Finn has it, = but=20 there's just no way with my exhaust in the way.  I'm pretty happy = with=20 the exhaust system, so I don't plan to change that, which means I = have to=20 come up with another solution. 
 
-I=20 could easily fit one of the FD coolers, but I don't think that would = be big=20 enough. 
 
-I=20 could possibly fit an oil to water heat exchanger, and use the = original oil=20 cooler location for a 3rd water cooler.  Don't care too much for = this=20 idea, mostly due to the extra weight, and complexity of hoses.  = Also, I'd=20 still have to worry about bursting the oil cooler on the = exchanger unless=20 I knew is was robust enough.  
 
-I=20 could use a stock 2nd gen cooler, and let the back end dip under = the=20 exhaust pipes.  This would drop the rear edge of the = cowl a few=20 inches, which would add some drag.  On the other hand, it=20 would block some high speed air from hitting the muffler, and add = to the=20 cooling exit area.   Another downside is that it's still = putting the=20 oil cooler very close to, and directly in front of the=20 exhaust.  
 
-Finally, I could find another type of oil cooler, which = would be=20 closer to the size of the evap core.   In the old = archives,=20 Mike Wills mentioned Fluidyne.  I had one of their radiators in = my FD,=20 and it was very well built.  Here's a link to the oil cooler = family I'm=20 thinking about.  They look pretty good to me.  What do you=20 think?   http://www.fluidyne.com/pl= _theoc.html
 
Thanks,
Rusty (waiting for a giant estimate for replacing my dead = heat=20 pump)
------=_NextPart_000_0078_01C4E697.B4860A30--