Return-Path: Received: from mail.viclink.com ([66.129.220.6] verified) by logan.com (CommuniGate Pro SMTP 4.2b8) with ESMTP id 324042 for flyrotary@lancaironline.net; Fri, 16 Jul 2004 17:15:23 -0400 Received-SPF: error receiver=logan.com; client-ip=66.129.220.6; envelope-from=pjmick@viclink.com Received: from viclink.com (p089.AS1.viclink.com [66.129.192.89]) by mail.viclink.com (8.11.7/8.11.7) with ESMTP id i6GLEq254696 for ; Fri, 16 Jul 2004 14:14:52 -0700 (PDT) Message-ID: <40F8451C.9010504@viclink.com> Date: Fri, 16 Jul 2004 14:14:04 -0700 From: Perry Mick User-Agent: Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: New Scoop References: Content-Type: multipart/alternative; boundary="------------040405020407040802030908" X-RAVMilter-Version: 8.4.3(snapshot 20030217) (mail.viclink.com) --------------040405020407040802030908 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit OK, thanks for the explanation. The numbers just looked strange, never seen a rotary installation with such a wide difference. And welcome to the flying rotary club! We will soon rule the world! That fellow asking about rotary powered Long-EZs last week, was actually looking to buy one. I told him mine will never be for sale. DaveLeonard wrote: > Perry, Believe me, those temps are right. Here is a picture of my > oil cooler (huge) with the dedicated right cheek inlet. I have a > somewhat unique cooling system in that the Rad does not get any fresh > air. Cooling enough for now to fly off my hours when I can return to > my hangar and make some improvements (slowly over time without having > to ground the plane). > > Dave Leonard > > Perry Mick Wrote: > > Dave, I would question the accuracy of your oil temp gauge with > that much difference between oil and coolant temps. Unless you > have one huge oil cooler! > > DaveLeonard wrote: > >> Steve, I can fly about 80% power (27"MAP) straight and level >> (200mph) and my coolant settles out at about 200 with oil at >> about 145. This is great for 95% of everything I want out of my >> plane. But prolonged climb is limited to less than 500 fpm >> because of coolant temps and that takes away any bragging rights >> I had over the lyc powered RV-6's. I expect to fix my cooling >> imbalance withing a few months, but I agree with the others. >> Shoot for slightly better cooling and you won't be disappointed. >> >> Dave Leonard. >> >> -----Original Message----- >> From: Rotary motors in aircraft >> [mailto:flyrotary@lancaironline.net]On Behalf Of Al Gietzen >> Sent: Wednesday, July 14, 2004 5:04 PM >> To: Rotary motors in aircraft >> Subject: [FlyRotary] Re: New Scoop >> >> If I can get a 75% power cruise with oil temperature of >> 200-210 and coolant >> >> of 190-200, I'll be happy. I need to improve my cooling >> temperatures by a >> >> good 10-15 degrees to accomplish that. >> >> >> >> Is that a reasonable objective, or am I trying to hit a >> target that is too >> >> low ? It seems to me that 217 oil and 200 coolant is a >> little on the high >> >> side. And that is at about 55% power. >> >> >> >> If my objectives aren't right, it would be really easy to >> just raise the >> >> target. In fact, it would make my day. >> >> >> >> Steve >> >> >> >> Personally, I think your objectives are about right. I >> designed for 80% power on a 90F day. >> >> >> >> Al >> --------------040405020407040802030908 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit OK, thanks for the explanation. The numbers just looked strange, never seen a rotary installation with such a wide difference.
And welcome to the flying rotary club! We will soon rule the world!
That fellow asking about rotary powered Long-EZs last week, was actually looking to buy one. I told him mine will never be for sale.

DaveLeonard wrote:
Perry, Believe me, those temps are right. Here is a picture of my oil cooler (huge) with the dedicated right cheek inlet. I have a somewhat unique cooling system in that the Rad does not get any fresh air.  Cooling enough for now to fly off my hours when I can return to my hangar and make some improvements (slowly over time without having to ground the plane).
 
Dave Leonard
Perry Mick Wrote: 

Dave, I would question the accuracy of your oil temp gauge with that much difference between oil and coolant temps. Unless you have one huge oil cooler!

DaveLeonard wrote:
Steve, I can fly about 80% power (27"MAP) straight and level (200mph) and my coolant settles out at about 200 with oil at about 145.  This is great for 95% of everything  I want out of my plane.  But prolonged climb is limited to less than 500 fpm because of coolant temps and that takes away any bragging rights I had over the lyc powered RV-6's.  I expect to fix my cooling imbalance withing a few months, but I agree with the others.  Shoot for slightly better cooling and you won't be disappointed.
 
Dave Leonard.
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On Behalf Of Al Gietzen
Sent: Wednesday, July 14, 2004 5:04 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: New Scoop

If I can get a 75% power cruise with oil temperature of 200-210 and coolant

of 190-200, I'll be happy.  I need to improve my cooling temperatures by a

good 10-15 degrees to accomplish that.

 

Is that a reasonable objective, or am I trying to hit a target that is too

low ?  It seems to me that 217 oil and 200 coolant is a little on the high

side.  And that is at about 55% power.

 

If my objectives aren't right, it would be really easy to just raise the

target.  In fact, it would make my day.

 

Steve

 

Personally, I think your objectives are about right.  I designed for 80% power on a 90F day. 

 

Al


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