Mailing List flyrotary@lancaironline.net Message #9842
From: DaveLeonard <daveleonard@cox.net>
Subject: RE: [FlyRotary] Re: New Scoop
Date: Fri, 16 Jul 2004 10:36:03 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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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