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gkrysztopik(at)satx.rr.co
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 Posted: Sun Sep 11, 2011 10:22 am Post subject: Flight Test for a Remote Oil Filter Kit on the Stratus Sub |
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Was it also 90+ degrees? If so, you went from about 250 to 233 degrees at around 130 mph and 5200 rpm. That's much more significant than I would have guessed for just a remote filter. I like where you mounted it, perfect spot with plenty of room and great airflow. Nice work, thanks.
On 9/11/2011 11:29 AM, Larry McFarland wrote: [quote] <![endif]--> <![endif]-->
Hi Gary,
From my journal, I’d earlier posted;
Note: I often think an oil cooler might be a worthwhile addition.
I had concern for oil temps that ran as high as 235 degrees F. The manual states 260 is the max oil temp permitted. Flying at 130 mph at 5200 rpm on a hot day of more than 90-degrees, engine oil will eventually reach 250 degrees (my warning set-point on the EIS) so I do back off to 4600 rpm and cruise at 115 to 120 mph. Oil temps will then stay near 235.
Larry McFarland 601HDS at www.macsmachine.com
From: owner-stratus-list-server(at)matronics.com (owner-stratus-list-server(at)matronics.com) [mailto:owner-stratus-list-server(at)matronics.com (owner-stratus-list-server(at)matronics.com)] On Behalf Of Gary Krysztopik
Sent: Sunday, September 11, 2011 11:00 AM
To: stratus-list(at)matronics.com (stratus-list(at)matronics.com)
Subject: Re: Flight Test for a Remote Oil Filter Kit on the Stratus Subaru
Thanks for posting Larry. What would you say the difference is in oil temp - what would the oil temp have been below without the remote filter?
On 9/11/2011 10:09 AM, Larry McFarland wrote:
Hi guys,
Sept 10 After a Hy-Vee lunch with the guys, I went to the hangar and did a thorough preflight, did take a full 5 quarts to top oil off before startup. The Subaru fired up immediately and I taxied out. Oil temps began at 60 p.s.i. and when warmed went down to 45 p.s.i. Tower cleared me for 10. The lift off was trim-adjusted with no perceptible feel for the weight change up front. I flew south of the control zone to the designated "practice area. Oil temps at 3000 feet reached 228 degrees at 4300 rpm and I progressively brought up the power in 100 rpm increments every 8 minutes or so. CHTs stayed 190 to 200 degrees, EGTs 1380, Coolant 200 and when rpms reached 5100 and airspeed at 128 mph, oil temps never went over 233 degrees. All other temps stayed well in the green. The remote oil filter kit resolved the max temp issues. I stayed on an east west track until I was satisfied that the engine was happy within its full range of operation and then headed back to Moline. Descending at 125 into the pattern was easy, the landing was smooth and I taxied back to the south tees with 175 hours on the engine. The cowl was unbuttoned, the engine was drip-free and oil hoses stayed where they'd been clamped. Pictures are added to the bottom of my engine page that shows the components and installation in greater detail. Very satisfied with this modification! Data was entered into the logs.
Larry McFarland 601HDS at www.macsmachine.com 0 1
2 [b]
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larry(at)macsmachine.com
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| Posted: Sun Sep 11, 2011 11:22 am Post subject: Flight Test for a Remote Oil Filter Kit on the Stratus Sub |
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Both days were in the mid-80s. I’m sure the temps were 4 or 5 degrees cooler
Yesterday, so the advantage was realistically more like 10-degrees or better.
Sure is easier to access. I’ll have to watch the bracket for any signs of fatigue.
It feels solid, but must stay that way to avoid cracking anything, lugs etc. I designed
the piece so the small rod welds will be the first to show fatigue, should that occur.
Larry McFarland 601HDS at www.macsmachine.com
From: owner-stratus-list-server(at)matronics.com [mailto:owner-stratus-list-server(at)matronics.com] On Behalf Of Gary Krysztopik
Sent: Sunday, September 11, 2011 1:20 PM
To: stratus-list(at)matronics.com
Subject: Re: Flight Test for a Remote Oil Filter Kit on the Stratus Subaru
Was it also 90+ degrees? If so, you went from about 250 to 233 degrees at around 130 mph and 5200 rpm. That's much more significant than I would have guessed for just a remote filter. I like where you mounted it, perfect spot with plenty of room and great airflow. Nice work, thanks.
On 9/11/2011 11:29 AM, Larry McFarland wrote:
Hi Gary,
From my journal, I’d earlier posted;
Note: I often think an oil cooler might be a worthwhile addition.
I had concern for oil temps that ran as high as 235 degrees F. The manual states 260 is the max oil temp permitted. Flying at 130 mph at 5200 rpm on a hot day of more than 90-degrees, engine oil will eventually reach 250 degrees (my warning set-point on the EIS) so I do back off to 4600 rpm and cruise at 115 to 120 mph. Oil temps will then stay near 235.
Larry McFarland 601HDS at www.macsmachine.com
From: owner-stratus-list-server(at)matronics.com (owner-stratus-list-server(at)matronics.com) [mailto:owner-stratus-list-server(at)matronics.com (owner-stratus-list-server(at)matronics.com)] On Behalf Of Gary Krysztopik
Sent: Sunday, September 11, 2011 11:00 AM
To: stratus-list(at)matronics.com (stratus-list(at)matronics.com)
Subject: Re: Flight Test for a Remote Oil Filter Kit on the Stratus Subaru
Thanks for posting Larry. What would you say the difference is in oil temp - what would the oil temp have been below without the remote filter?
On 9/11/2011 10:09 AM, Larry McFarland wrote:
Hi guys,
Sept 10 After a Hy-Vee lunch with the guys, I went to the hangar and did a thorough preflight, did take a full 5 quarts to top oil off before startup. The Subaru fired up immediately and I taxied out. Oil temps began at 60 p.s.i. and when warmed went down to 45 p.s.i. Tower cleared me for 10. The lift off was trim-adjusted with no perceptible feel for the weight change up front. I flew south of the control zone to the designated "practice area. Oil temps at 3000 feet reached 228 degrees at 4300 rpm and I progressively brought up the power in 100 rpm increments every 8 minutes or so. CHTs stayed 190 to 200 degrees, EGTs 1380, Coolant 200 and when rpms reached 5100 and airspeed at 128 mph, oil temps never went over 233 degrees. All other temps stayed well in the green. The remote oil filter kit resolved the max temp issues. I stayed on an east west track until I was satisfied that the engine was happy within its full range of operation and then headed back to Moline. Descending at 125 into the pattern was easy, the landing was smooth and I taxied back to the south tees with 175 hours on the engine. The cowl was unbuttoned, the engine was drip-free and oil hoses stayed where they'd been clamped. Pictures are added to the bottom of my engine page that shows the components and installation in greater detail. Very satisfied with this modification! Data was entered into the logs.
Larry McFarland 601HDS at www.macsmachine.com012345678901234567890
[quote][b]
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