25 May 2025, 18:11 [ UTC - 5; DST ]
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Post subject: Re: Flying the Skywagon  Posted: 15 Sep 2019, 14:30 |
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Joined: 05/29/14
Posts: 3005
Post Likes: +3089
Location: CEA3
Aircraft: PA24-260, C340 Ram 7
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Username Protected wrote: Lemme ask about cooling.
If I want to keep my CHTs less than 380, I have three options:
1) ROP by nearly 200 degrees, for a fuel flow of about 17-18gph at 4500’.
2) LOP by nearly 100 degrees, for a fuel flow of about 11.5gph at 4500’.
3) Partial cowl flaps.
Yes, I’ve checked the baffles. I have GAMIs, with a spread of 0.2. Takeoff fuel flow is fine. The situation is mildly worse at lower RPM.
Other solutions?
I’m looking into the cowl louver STC, but the Skywagon club owns it and they aren’t selling it right now because of some “pending paperwork.” Even with the STC in hand, I’d have to find the louvers somewhere. Word on the street is this STC is good for “only 10-15 degrees,” but that’s all I need.
What if I got the louvers from a Bonanza and put them in the Cessna cowl? Does that sound field-approvable? I don’t get how anyone in a NA engine gets 100 LOP! When the last cylinder to go over the peak with my IO-540 happens (about 5-10 LOP) I stop leaning, and my GAMI spread is about 0.3. My CHT’s are mid to low 300’s at that setting and FF around 10.7 gph. Murray
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Post subject: Re: Flying the Skywagon Posted: 15 Sep 2019, 14:51 |
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Joined: 05/29/13
Posts: 14302
Post Likes: +12022
Company: Easy Ice, LLC
Location: Marquette, Michigan; Scottsdale, AZ, Telluride
Aircraft: C510,C185,C310,R66
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Username Protected wrote: Quote: Bud has the hangar two down from me. Had no idea who he was but see him all the time. Mark... Are you saying that you have not read an Aviation Magazine in the last 50 years?  I was instructing at the same school (Sussex Aero)in 1970 where he was instructing , and he was writing for Air Progress then... now he has articles in EAA Sport Aviation, AOPA Pilot, General Aviation news, Flight Journal... etc.. He partnered in a new S2 in late 70 or 71. http://www.airbum.com/Pitts/PittsFlightTraining.htmlHere is an article on the thread topic... by Budd.. http://www.airbum.com/pireps/PirepCessna185.htmlIf he isn’t on BeechTalk I don’t know him 
_________________
Mark Hangen
Deputy Minister of Ice (aka FlyingIceperson)
Power of the Turbine
"Jet Elite"
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Post subject: Re: Flying the Skywagon Posted: 15 Sep 2019, 16:09 |
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Joined: 01/29/09
Posts: 4751
Post Likes: +2463
Company: retired corporate mostly
Location: Chico,California KCIC/CL56
Aircraft: 1956 Champion 7EC
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Quote: If he isn’t on BeechTalk I don’t know him That is about true. If there had been an internet in my early years of flying, I probably would not have digested every aviation rag out there.
_________________
Jeff
soloed in a land of Superhomers/1959 Cessna 150, retired with Proline 21/ CJ4.
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Post subject: Re: Flying the Skywagon Posted: 23 Sep 2019, 10:47 |
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Joined: 12/29/12
Posts: 670
Post Likes: +261
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Username Protected wrote: Lemme ask about cooling.
If I want to keep my CHTs less than 380, I have three options:
1) ROP by nearly 200 degrees, for a fuel flow of about 17-18gph at 4500’.
2) LOP by nearly 100 degrees, for a fuel flow of about 11.5gph at 4500’.
3) Partial cowl flaps.
Yes, I’ve checked the baffles. I have GAMIs, with a spread of 0.2. Takeoff fuel flow is fine. The situation is mildly worse at lower RPM.
Other solutions?
I’m looking into the cowl louver STC, but the Skywagon club owns it and they aren’t selling it right now because of some “pending paperwork.” Even with the STC in hand, I’d have to find the louvers somewhere. Word on the street is this STC is good for “only 10-15 degrees,” but that’s all I need.
What if I got the louvers from a Bonanza and put them in the Cessna cowl? Does that sound field-approvable? Search you tube for Fat tire cowboys 20 favorite 185 mods. Interesting video on its own, but he talks about some cooling fins he installed to help his CHT´s. Rgs, Patrick
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Post subject: Re: Flying the Skywagon Posted: 08 Oct 2019, 18:41 |
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Joined: 07/04/11
Posts: 1709
Post Likes: +244
Company: W. John Gadd, Esq.
Location: Florida
Aircraft: C55 Baron
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Username Protected wrote:  This winter. Landing at Lac La Biche Ice Runway. Never got around to putting my wheels on this winter. I regret it. Perfect airplane for me. When it’s on floats, I can’t wait to get wheels on. When the wheels are on, I’m looking forward to float season. Next winter, I have skis to play with too! Not sure panel shots are relevant to this thread. Sure it’s a great IFR platform, but the point of selling my T210 in favour of the 185 was to try to meet the tactile requirement to fly a hot taildragger.  Despite that bit of bravado, I miss my autopilot on long cross country flights.  185 on amphibs-that's living well.
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Post subject: Re: Flying the Skywagon Posted: 09 Oct 2019, 08:00 |
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Joined: 05/23/08
Posts: 6060
Post Likes: +709
Location: CMB7, Ottawa, Canada
Aircraft: TBM - C185 - T206
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Hi Daryl, I must have a sister ship to yours, CGDIP sn 3971. Stuart, I do have the cowl louvers. They do help for cooling but on floats I leave the cowl flaps open or I have one cylinder peaking over 400F. Username Protected wrote: This winter. Landing at Lac La Biche Ice Runway. Never got around to putting my wheels on this winter. I regret it. Perfect airplane for me. When it’s on floats, I can’t wait to get wheels on. When the wheels are on, I’m looking forward to float season. Next winter, I have skis to play with too! Not sure panel shots are relevant to this thread. Sure it’s a great IFR platform, but the point of selling my T210 in favour of the 185 was to try to meet the tactile requirement to fly a hot taildragger. Despite that bit of bravado, I miss my autopilot on long cross country flights.
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Former Baron 58 owner.
Pistons engines are for tractors.
Marc Bourdon
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Post subject: Re: Flying the Skywagon Posted: 09 Oct 2019, 08:27 |
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Joined: 12/29/12
Posts: 670
Post Likes: +261
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Username Protected wrote: This winter. Landing at Lac La Biche Ice Runway. Never got around to putting my wheels on this winter. I regret it. Perfect airplane for me. When it’s on floats, I can’t wait to get wheels on. When the wheels are on, I’m looking forward to float season. Next winter, I have skis to play with too! Not sure panel shots are relevant to this thread. Sure it’s a great IFR platform, but the point of selling my T210 in favour of the 185 was to try to meet the tactile requirement to fly a hot taildragger. Despite that bit of bravado, I miss my autopilot on long cross country flights. 185 on amphibs-that's living well.
Why can’t you put autopilot on the 185? You just have to manage the trim manually.
Rgs
Patrick Daniels
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