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NICE FLIGHT

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yourtcfg(at)aol.com
Guest

Posted: Sun Jan 16, 2011 10:08 pm Post subject: NICE FLIGHT

HI KIDS...I had a really nice flight in a 500B with the 350HP Merlin conversion.  Morris Kernick called and needed this airplane relocated from his shop in Stockton to the Oklahoma City area.  So yesterday morning, I hopped a "crowd killer" to CA and then jumped in N6258X and headed east.  The airplane really performs well!!  Take off is good but the real fun comes in the climb!  I had to file IFR to get out of the valley fog.  The airplane easily climbed 2000 fpm with no cooling issues.  It was still climbing over 1000FPM going through 13,000.  Admittedly, I was below gross but the airplane was plum full of gas (241 gal) and had lots of performance left.  I flew to Durango (DUR) in about 3.1 hours, around 215kts including the climb.  Fueled, and pressed on at night arriving 2.2 hours later and about 9pm.   Averaged about 213 kts including two climbs and circling the field etc.  Purdy cool machine.  landed on a 3000 foot strip and met the new owners, soon to be TCFG members.  Great guys.  Fun to fly at night in a really capable airplane.  jb

   

   [quote][b]

nico(at)cybersuperstore.c
Guest

Posted: Sun Jan 16, 2011 11:01 pm Post subject: NICE FLIGHT

That configuration has always been my dream outfit. The perfect fit  between power and economy. 

 Nice sharing it with us. 

 Nico

  



   From: owner-commander-list-server(at)matronics.com  [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of  yourtcfg(at)aol.com

Sent: Sunday, January 16, 2011 10:05  PM

To: commander-list(at)matronics.com

Subject: Commander-List:  NICE FLIGHT

 



HI KIDS...I had a really nice  flight in a 500B with the 350HP Merlin conversion.  Morris Kernick called  and needed this airplane relocated from his shop in Stockton to  the Oklahoma City area.  So yesterday morning, I hopped a "crowd  killer" to CA and then jumped in N6258X and headed east.  The airplane  really performs well!!  Take off is good but the real fun comes in the  climb!  I had to file IFR to get out of the valley fog.  The  airplane easily climbed 2000 fpm with no cooling issues.  It was still  climbing over 1000FPM going through 13,000.  Admittedly, I was below gross  but the airplane was plum full of gas (241 gal) and had lots of  performance left.  I flew to Durango (DUR) in about 3.1 hours, around  215kts including the climb.  Fueled, and pressed on at night arriving 2.2  hours later and about 9pm.   Averaged about 213 kts including two  climbs and circling the field etc.  Purdy cool machine.  landed on a  3000 foot strip and met the new owners, soon to be TCFG members.  Great  guys.  Fun to fly at night in a really capable airplane.  jb

 

[quote]



href="http://www.matronics.com/Navigator?Commander-List">http://www.matronics.com/Navigator?Commander-List

href="http://forums.matronics.com">http://forums.matronics.com

href="http://www.matronics.com/contribution">http://www.matronics.com/c

[b]

barry.collman(at)air-brit
Guest

Posted: Mon Jan 17, 2011 5:11 am Post subject: NICE FLIGHT

Hi JimBob,

 

I had a ride in N6258X, from Nashville to Oklahoma City after the Fly-In one year.

I hadn’t ridden in many Commanders at that time, but I thought how quiet it was.

What did you think?

 

What strip did you land on?

Best Regards,

Barry

 

From: owner-commander-list-server(at)matronics.com [mailto:owner-commander-list-server(at)matronics.com] On Behalf Of yourtcfg(at)aol.com

Sent: 17 January 2011 06:05

To: commander-list(at)matronics.com

Subject: NICE FLIGHT

 



HI KIDS...I had a really nice flight in a 500B with the 350HP Merlin conversion.  Morris Kernick called and needed this airplane relocated from his shop in Stockton to the Oklahoma City area.  So yesterday morning, I hopped a "crowd killer" to CA and then jumped in N6258X and headed east.  The airplane really performs well!!  Take off is good but the real fun comes in the climb!  I had to file IFR to get out of the valley fog.  The airplane easily climbed 2000 fpm with no cooling issues.  It was still climbing over 1000FPM going through 13,000.  Admittedly, I was below gross but the airplane was plum full of gas (241 gal) and had lots of performance left.  I flew to Durango (DUR) in about 3.1 hours, around 215kts including the climb.  Fueled, and pressed on at night arriving 2.2 hours later and about 9pm.   Averaged about 213 kts including two climbs and circling the field etc.  Purdy cool machine.  landed on a 3000 foot strip and met the new owners, soon to be TCFG members.  Great guys.  Fun to fly at night in a really capable airplane.  jb 	  Quote: 	
		   	


   [quote][b]

yourtcfg(at)aol.com
Guest

Posted: Mon Jan 17, 2011 9:27 am Post subject: NICE FLIGHT

HI BARRY.It was very quite inside.  I wore my Lightspeed headsets and was listening to Conway Twitty so it didn't really matter (Who elese would you listed to going to OK?????????)  I really liked the airplane.  jb  (PS landed at Okeen OK, (O65) 3000 feet long, great little airport, mostly AG operations.  jb

 

   

 

 

   --

stratobee

Joined: 28 Dec 2010
Posts: 159
Location: Los Angeles

Posted: Tue Jan 18, 2011 10:11 am Post subject: Re: NICE FLIGHT

In pictures online it seems to have tiny 4 blade props - does it still have that?

_________________
Adam

Peter Bichier

Joined: 25 Aug 2008
Posts: 103
Location: Toledo, Ohio

Posted: Tue Jan 18, 2011 11:37 am Post subject: NICE FLIGHT

Hey Adam,



That's correct, she still has 4 blades and that is why she is so  

quiet...



It was great to see your 520, very special plane no doubt, yeahp,  

looks like you got yourself a classic!



Well you know where I am, and if you need any assistance in making  

anything happen, you know that a Commander lover is not too far from  

your bird so just let me know.



Also, when you guys are getting close to get ready for the ferry,  

PLEASE let me know, I'd love to hear those GO-435s come to life plus  

it looks like a fun airport.



Take care and GOOD LUCK!



Peter



On Jan 18, 2011, at 1:11 PM, stratobee wrote:



 	  Quote: 	
		   

 <adam(at)adamfrisch.com>



 In pictures online it seems to have tiny 4 blade props - does it  

 still have that?



 --------

 Adam

_________________
560 Dreamer

stratobee

Joined: 28 Dec 2010
Posts: 159
Location: Los Angeles

Posted: Tue Jan 18, 2011 2:06 pm Post subject: Re: NICE FLIGHT

Nice meeting you too and thanks for sharing your Commander memories from back in the days.



I will make sure I give you a heads up before we come collect her.

_________________
Adam

nico(at)cybersuperstore.c
Guest

Posted: Wed Jan 19, 2011 9:36 am Post subject: NICE FLIGHT

Hi Peter,



Is there a difference in efficiency with the 4-blade props? I remember

reading somewhere that the Mr. RPM 800 conversions are hampered by the props

not being able to deliver all the power, which is a shame, but that aside

for now. If the 4-blade configuration is quieter (because of the shorter

blades?) and there is no penalty in performace, why would one not go that

route on all models?



Thanks



Nico

--

BobsV35B(at)aol.com
Guest

Posted: Wed Jan 19, 2011 11:32 am Post subject: NICE FLIGHT

Good Afternoon Nico,

  

 Obviously, I have no knowledge at all when it comes to Aero Commanders, but  I do have a solitary experience with a four blade prop on a general aviation  aircraft.

  

 The following is just my uninformed opinion.

  

 Back in '96, I had Colemill install an IO-550-B and a four blade Q-Tip  Hartzell on my V35B Bonanza.

  

 It was a disaster!

  

 The initial acceleration was abominable and the climb was poor. Top speed  was reasonable for the power.

  

 The good news is that it was quiet!

  

 The interior cabin noise did seem lower, but I never measured it with any  instrumentation.  The biggest comments came from my neighbors, They said my  airplane was now the quietest at our airfield. When I made a fly by a friend's  strip he said he could not hear me until I was right over the field and he heard  the engine noise before he could hear the propellor. His description was that I  just whooshed by.

  

 After about 400 hundred hours, I took off the four blade and installed a  three blade McCauley 406. The difference was startling. Takeoff became  impressive and climb was much better than it had been with the 520 and way  better than with the four blade. I wish I could have tried a two blade as I  really think that would have the best takeoff and climb performance possible  with that engine on that airframe. I tried to find a two blade that would work.  Both Hartzell and McCauley told me that a two blade should work very well and  could easily absorb the power of the IO-550-B in the diameter that would fit,  but that I was the only person who had ever asked about a two blade for that  combination. The market was too small to bother with an approval.

  

 I have many years flying four blade props on the DC-7. They did the job we  needed. We were told the airplane would have been more efficient if it could  have been fitted with three blade props. but the ground clearance requirements  could not be met with three blades long enough to absorb the power.

  

 As you are probably well aware, the Super Connie using the same engines did  have sufficient ground clearance to swing a three blade and that is what  Lockheed chose to use.

  

  Sooo! ---- The conclusion I have reached is that if noise is the most  important consideration, the lower tip speed of the small diameter four blade is  worth the loss in performance. If performance is the goal, use the fewest  number of blades that will absorb the power in the space allotted.

  

 Happy Skies,

  

 Old Bob

  

  In a message dated 1/19/2011 11:36:43 A.M. Central Standard Time,  nico(at)cybersuperstore.com writes:

  	  Quote: 	
		  -->    Commander-List message posted by: "cybersuperstore"    <nico(at)cybersuperstore.com>



Hi Peter,



Is there a difference    in efficiency with the 4-blade props? I remember

reading somewhere that the    Mr. RPM 800 conversions are hampered by the props

not being able to deliver    all the power, which is a shame, but that aside

for now. If the 4-blade    configuration is quieter (because of the shorter

blades?) and there is no    penalty in performace, why would one not go that

route on all    models?



Thanks



Nico



	


  [quote][b]

Cate Chagnot

Joined: 24 May 2007
Posts: 36
Location: Ohio

Posted: Thu Jan 20, 2011 8:28 am Post subject: Re: NICE FLIGHT

Nico,



From an engineering standpoint, the fewer the blades the more efficient the prop. Theoretically a single blade counterbalanced prop is the most efficient. I know a couple of folks that have changed from two bladed props on their 180 Skywagons to three bladed and have been disappointed with the performance.

_________________
Cate

N4278S 680E
Skywagon N180PK

tylorhall(at)mac.com
Guest

Posted: Thu Jan 20, 2011 8:51 am Post subject: NICE FLIGHT

MT  Propeller did a 5 bladed conversion for the 690 and did not get any performance improvement.

I think there is a STC for the 690 from Dowty Propeller that is a wide cord 3 bladed prop that did get a performance increase.



The Mr RPM conversion seems to have a low thrust issue with the prop that is approved.

MT has a new STC for the Comanche 400 with  the IO-720 engine.



http://www.mt-propeller.com/en/entw/stcs/pa24_1.htm



In the photo on their web site, you can see the new design is wider.



Tylor Hall

tylorhall(at)mac.com

First Fueling Systems, Inc.

100 Iron St SE

Albuquerque, NM 87102

505-247-3001

505-247-3005 FAX

505-400-8373 Cell

www.firstfueling.com



On Jan 20, 2011, at 9:28 AM, Cate Chagnot wrote:



 	  Quote: 	
		   

 

 Nico,

 

> From an engineering standpoint, the fewer the blades the more efficient the prop. Theoretically a single blade counterbalanced prop is the most efficient. I know a couple of folks that have changed from two bladed props on their 180 Skywagons to three bladed and have been disappointed with the performance.

 

 --------

 Cate

 

 N4278S 680E

 Skywagon N180PK

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=327676#327676

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