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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 10:06 
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I cruise at 7-8K FT, WOT/2600RPM/16-17GPH ROP for 155KTAS. Sometimes can get closer to 160KTAS out of it. A good IFR planning range with this airplane is 500NM in 3.5 hours. We mostly use it for short hops 200-300NM.

Air Plains installed the fuel injected IO-520-D in 1995, it has about 1850 hours on it now.
Unfortunately the IO-550 was not an option at the time.

We put the speed mods from Horton Flight Bonus on this airframe including drooped wing tips, nose and main landing gear wheel pants and fairings, wing strut contouring and cuffs, steps removed, aileron and flap gap seals.


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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 10:19 
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Joined: 12/19/11
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Aircraft: 2004 SR22 G2
If sometime later in my flying career, I find myself with a Skylane again, the 520 or 550 options will be a must. That makes it a much different bird when you can do 155-160 kts. Wow.

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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 10:55 
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Joined: 04/16/08
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Location: Nevada City, CA
Aircraft: Baron 55 w/550s
when I sold my 172 and got a Skylane, in 1979, the famous instructor BH told me "now you can go up and go faster at the same time".


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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 11:03 
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Joined: 12/12/14
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Location: Boise, ID
Username Protected wrote:
Huh? Are you saying that you cruise with the carb heat ON? Now that's really interesting.

Tell us more, Mike.


One of the masters (John D or Walter A) posted it a few years back. I'll see if I can find it.

It's also explained in the book "The Skylane Pilots Companion" .

In short, it allows you to get more complete fuel vaporization.
Fuel vaporization is better in temps above 40 degrees. The 182s carb is a bit notorious for getting pretty chilly as the carb is located away from the nice warm part of the engine environment. Use a bit of carb heat, get better vaporization, allows for a bit more leaning.

It works.


Mike,

Do you have a carb temp gauge? If so, what is your target temp so I can give this a try with percision?

On an unrelated note, what is your rpm drop with full carb heat? Mine is almost 300rpm, especially with the mixture in a rich (landing) configuration. Its much less if I lean a little. Is this normal?

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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 11:18 
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Joined: 12/13/07
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Location: Seeley Lake, MT (23S)
Aircraft: 1964 Bonanza S35
Username Protected wrote:
If sometime later in my flying career, I find myself with a Skylane again, the 520 or 550 options will be a must. That makes it a much different bird when you can do 155-160 kts. Wow.


I have a friend that was a partner for a while in a 182 that had all those speed mods so got a chance to study it. It makes no sense to build up a 182 that can do 155+ knots as you now have a plane that can't go off road. 17 GPH for that speed? That's just dumb when the 550 Bonanza will do that on 11 GPH or slightly less.
I've seen those wheel pants, they are much more effective than the essentially cosmetic ones I have for my 182 that are currently in my attic. To be that good they have to cover a lot of the tire, the last thing you want off pavement. Flap gap seals work by making the flaps less effective. The nose strut fairings were a constant source of complaint as well.

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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 11:24 
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Location: Seeley Lake, MT (23S)
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Username Protected wrote:
Mike,

Do you have a carb temp gauge? If so, what is your target temp so I can give this a try with percision?

On an unrelated note, what is your rpm drop with full carb heat? Mine is almost 300rpm, especially with the mixture in a rich (landing) configuration. Its much less if I lean a little. Is this normal?


We aim for low 40's with ours. You will not get much precision though. The carb heat set up is pretty crude and not designed for this type of operation. The slightest movement of the control will send the temp shooting up or down by 25+ degrees. And then when you get it set it will wander over time. It certainly isn't like the fuel flow on our Bonanzas where you can set any flow and it will be rock solid.
I don't recall what our RPM drop is with full heat. For landing we heat up the carb before turning base and then turn it off. We only use carb heat in the pattern if the carb is actually below freezing. If it isn't then it doesn't make any sense to use it.

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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 11:36 
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Joined: 10/29/11
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Company: Johnson's Jewelry Inc.
Location: Dayton, Ohio (KMGY)
Aircraft: F33A
Username Protected wrote:
This is a shot of my JPI, cruising at 10.5, leaned to burning 12.5gph, with a TAS of 144kts. I got up to 13.5 recently and the fuel burn was down to 11.5, and a TAS of 142kts. Really love this pponk engine with the MT prop, very smooth and, for a 182, fast.


Hi Larry
Do you have GAMI's ? engine seems to be matched very well. 142K's appears to be what we got in our 182. I remember that number since the Bonanza is almost exactly 30K faster.

Can't get four adults and golf clubs in Bonanza, however. Unless the two backseat passengers are 110 as is the case of my wife and her girlfriend, then we are OK as long as luggage is limited to about 40 pounds total. A change of underwear, socks and a shaving kit.


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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 11:39 
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Joined: 09/23/09
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Location: Cascade, Idaho (U70)
Aircraft: 182
Yes, I have the carb temp gauge. I shoot for about 40-50 but it's a very crude linkage system. The thing wants to creep a bit.

I use the method primarily when in fuel savings mode.

You will notice your egt drop significantly when you apply carb heat.

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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 11:42 
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Joined: 05/29/14
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Location: CEA3
Aircraft: PA24-260, C340 Ram 7
I agree with Scott.
There’s a fellow with an original Wren converted 182.

When he put in a 550 his stall speed went up by more than he’d like due to all the extra weight up front.

Murray


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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 11:45 
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Joined: 11/21/09
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Location: Albany, TX
Aircraft: Prior SR22T,V35B,182
All the talk is about the 470's, and their replacement options, and I know the 230 HP IO-540 in the 182S/T's is not the main shopping target, but for a 182, it's pretty efficient.

This shows 143 KTAS on 10.7. Depending on altitude and temp, it may vary 2 knots up or down, but it's pretty representative.

It's now been right at one year since I bought my 3rd 182, and I am still very happy with what I have. In fact, it's the most content with a plane I've ever been.

Attachment:
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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 12:14 
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Joined: 08/21/13
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Location: SW Colorado
Aircraft: 182PPonk
Username Protected wrote:
This is a shot of my JPI, cruising at 10.5, leaned to burning 12.5gph, with a TAS of 144kts. I got up to 13.5 recently and the fuel burn was down to 11.5, and a TAS of 142kts. Really love this pponk engine with the MT prop, very smooth and, for a 182, fast.


Hi Larry
Do you have GAMI's ? engine seems to be matched very well. 142K's appears to be what we got in our 182. I remember that number since the Bonanza is almost exactly 30K faster.

Can't get four adults and golf clubs in Bonanza, however. Unless the two backseat passengers are 110 as is the case of my wife and her girlfriend, then we are OK as long as luggage is limited to about 40 pounds total. A change of underwear, socks and a shaving kit.


No GAMI's

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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 12:19 
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Joined: 09/23/09
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Location: Cascade, Idaho (U70)
Aircraft: 182
I'm not sure where I'd put GAMIs on my Pponk 182. ;)

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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 12:29 
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Joined: 12/12/14
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Location: Boise, ID
GAMIs? :scratch: What are they?

That would be nice.

Mike and I have pretty much the same plane. He has a p-ponk, I have a O-550, but outside of TBO and operating RPM they perform fairly similar down low. They are both carburated.

Thanks Mike - I will give the 40 degree trick a try. I'm just trying to get the burn down a bit because especially down low, it's ridiculous at a number I feel safe. The downside is I only have a EGT/CHT probe that can display a single value at a time, so I have to cycle through all the cylinders which is a pain, and the variation between cylinder temps can be as high as 30-40 degrees. Is LOP safe on these carbed motors?

As for stall speed, the increase in weight was negligible. I can get you the weight and balance from the conversion, but I believe the overall impact was less than 20 pounds, including the 3 blade prop upgrade.


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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 13:26 
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Joined: 08/21/13
Posts: 343
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Location: SW Colorado
Aircraft: 182PPonk
Username Protected wrote:
GAMIs? :scratch: What are they?

That would be nice.

Mike and I have pretty much the same plane. He has a p-ponk, I have a O-550, but outside of TBO and operating RPM they perform fairly similar down low. They are both carburated.

Thanks Mike - I will give the 40 degree trick a try. I'm just trying to get the burn down a bit because especially down low, it's ridiculous at a number I feel safe. The downside is I only have a EGT/CHT probe that can display a single value at a time, so I have to cycle through all the cylinders which is a pain, and the variation between cylinder temps can be as high as 30-40 degrees. Is LOP safe on these carbed motors?

As for stall speed, the increase in weight was negligible. I can get you the weight and balance from the conversion, but I believe the overall impact was less than 20 pounds, including the 3 blade prop upgrade.


Is LOP safe? I called the guys at PPonk and they didn't believe in it. I emailed the GAMI guys and they said they had done testing on a similar carb engine and said it was completely okay. So I run mine LOP with no CHT ever going above 350, as shown in my picture above.

As for stall speed, full flaps for me is still way low, 52kts. Mine has the lightweight MT prop which helps.


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 Post subject: Re: Why do we all seem to love Skylanes so much?
PostPosted: 11 Dec 2017, 13:35 
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Joined: 05/01/17
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Location: KVNC / KMKC
Aircraft: C182Q IO-550
Apologize

I’m LATE back responding

Remember I have an IO-550-D.... An INJECTED Engine, thus, no carb heat needed AR available

I get to 14.5 gph LOP, being an October 2017 APS / Ada, Oklahoma Graduate

I had AirPlains trade my new TCM Injectors for GAMI’s, and have a JPI EDM 930

CHT’s around 350 LOP / EGT’s 1450 to 1500

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