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CJ-7 Pictures

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jetjockey

Joined: 12 Dec 2006
Posts: 31
Location: Granbury, Texas

Posted: Tue Apr 03, 2012 3:07 am Post subject: CJ-7 Pictures

http://airforceworld.com/pla/cj7-trainer-china.htm

viperdoc(at)mindspring.co
Guest

Posted: Tue Apr 03, 2012 8:59 am Post subject: CJ-7 Pictures

Leads one to wonder...Hmmm...which came first the JAK or the egg? Strange similarity..JAK 152 and L7...say it ain't so Joe! And the thread goes on! MMO anyone?

Doc

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pnicholson

Joined: 04 Jun 2011
Posts: 46

Posted: Tue Apr 03, 2012 5:02 pm Post subject: Re: CJ-7 Pictures

what intrigued me was this:



"As of 2007, the Nanchang Aircraft Manufacturing Company was still manufacturing the CJ-6G, a modernized version featuring such improvements as increased power, a strengthened fuselage structure, bigger fuel tanks, and other modifications."



Anyone have any info on these "new" planes?

viperdoc(at)mindspring.co
Guest

Posted: Tue Apr 03, 2012 5:31 pm Post subject: CJ-7 Pictures

Ask Rich Hess.

Doc



Sent from my iPad



On Apr 3, 2012, at 8:02 PM, "pnicholson" <pednicholson(at)gmail.com> wrote:



 	  Quote: 	
		   

 

 what intrigued me was this:

 

 "As of 2007, the Nanchang Aircraft Manufacturing Company was still manufacturing the CJ-6G, a modernized version featuring such improvements as increased power, a strengthened fuselage structure, bigger fuel tanks, and other modifications."

 

 Anyone have any info on these "new" planes?

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=369988#369988

hess737(at)aol.com
Guest

Posted: Tue Apr 03, 2012 5:52 pm Post subject: CJ-7 Pictures

Yes, I own a CJ-6G. 



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Harv

Joined: 01 Jul 2010
Posts: 172

Posted: Wed Apr 04, 2012 3:44 am Post subject: Re: CJ-7 Pictures

Oooah, tell us some more about the finer details of the CJ-6g 



Many differences to the CJ-6a?



Rgs

Harv

hess737(at)aol.com
Guest

Posted: Wed Apr 04, 2012 4:42 am Post subject: CJ-7 Pictures

Well, I can't speak to the structural improvements but the aircraft was imported to Victoria Air Maintenance about 10 years ago. Joe Howse did the flight tests of the HS-6K engine (400 hp) and new three bladed prop. I would average 155-160 KTAS on 17 gph at 60% power, faaster if I so chose. 

    

   There is a good size utility locker behind the space where the normal baggage compartment is located. In most other ways it is identical to the CJ-6A. I had Victoria do lots of upgrades: gear warning system, Sapp's inboard fuel tanks, full Garmin IFR package with Shadin and TruTrak A/P. An ADI out of a fighter. The engine was particularly smooth and powerful.

    

   About 6 months ago the engine came to a clattering, frozen stop just prior to takeoff. Number 4 piston rod broke. I'd had hydraulic locks from it sitting from time to time but had always cleared the lock prior to start. So, with about 750 hours since new I needed a new engine. I had bought a freshly overhauled M-14P in the hopes that it would be more supportable long term. We took the wings off and put the airplane on an 18 wheeler to truck it to my facility, International Jets.

    

   The trucker did not follow our directions and ended up in a location where he had to make a very tight right turn, ran the trailer up on a curb and hit my airplane's horizontal tail on a pole. The damage was significant and my insurance company totaled the aircraft. I bought the salvage and we are in the process of rebuilding Mongoose. She will fly again this year.

    

   Cheers

 

 

   Richard Hess

 C 404-964-4885

 

 

   --

Harv

Joined: 01 Jul 2010
Posts: 172

Posted: Wed Apr 04, 2012 11:04 am Post subject: Re: CJ-7 Pictures

Richard



Wow, thats a story and a half.... Sounds great but what a shame the aircraft was hydraulic locked and the truck driver smashed it!

Hope you manage to get the damaged fixed and flying again.



Do you have any details as to how the Chinese extracted 400hp from the Housai?



 I don't suppose you still have that engine you might consider selling for a rebuild? I'd be interested in it.

Rgs

Harv

brian(at)lloyd.com
Guest

Posted: Wed Apr 04, 2012 12:25 pm Post subject: CJ-7 Pictures

On Wednesday, April 4, 2012, Harv  wrote:

 	  Quote: 	
		  --> Yak-List message posted by: "Harv" <[url=javascript:;]martin.harvey(at)kbr.com[/url]>

  

 Do you have any details as to how the Chinese extracted 400hp from the  	




MMO in both the fuel and the oil. Pay no attention to the boost and RPM increases. They have nothing to do with it. 

 



-- 

Brian Lloyd, WB6RQN/J79BPL

3191 Western Dr.

Cameron Park, CA 95682

brian(at)lloyd.com (brian(at)lloyd.com)

+1.767.617.1365 (Dominica)

 +1.916.877.5067 (USA)



  [quote][b]

hess737(at)aol.com
Guest

Posted: Wed Apr 04, 2012 2:04 pm Post subject: CJ-7 Pictures

Harv,

   Feel free to contact me off line.

 

 

   Richard Hess

 C 404-964-4885

 

 

   --

cd001633(at)mindspring.co
Guest

Posted: Wed Apr 04, 2012 5:29 pm Post subject: CJ-7 Pictures

Hi Richard,

 

I would welcome your response to Harv questions here, on the List…  I am pretty sure many of us would love to read your comments and it is the kind of information the List was created for… 

 

Thanks for considering this,

 

Sam Sax

CJ-6A

Miami, FL

 

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Richard Hess

Sent: Wednesday, April 04, 2012 6:02 PM

To: yak-list(at)matronics.com

Subject: Re: Re: CJ-7 Pictures

 

Harv,



Feel free to contact me off line.



Richard Hess

C 404-964-4885



 

--

hess737(at)aol.com
Guest

Posted: Wed Apr 04, 2012 6:20 pm Post subject: CJ-7 Pictures

Sam,

   I thought I did tell you guys about the CJ-6G. The biggeediff was the engine. Extremely smooth. 160 KTAS on 60% power. With 82 gallons of gas I could do about 600 nm. I seemed to leave normal CJs and Yaks behind above 5000 ft. I usually cruised with them at 50% power, 125 KIAS on 12 gph.

    

   I know the M-14P I'll put in it now won't be quite so smooth or powerful but I really wanted something more supportable. My biggest thanks go to the guy who arranged for my replacement tail parts, and Doug Sapp for everything CJ. Without those guys reaching back into China was going to be expensive and months of delay.

    

   Hope this answers your questions. I really like my MOngoose and can't wait to have it flying again.

 

 

   Richard Hess

 C 404-964-4885

 

 

   --

Pete Fowler

Joined: 07 Jul 2009
Posts: 76
Location: California

Posted: Thu Apr 05, 2012 6:58 am Post subject: Re: CJ-7 Pictures

UN-like the CJ-6, it's been widely known the CJ-7 is just a license-built Yak.

viperdoc(at)mindspring.co
Guest

Posted: Thu Apr 05, 2012 8:08 am Post subject: CJ-7 Pictures

YAK 18 knock off.  ;^))

Doc



Sent from my iPad



On Apr 5, 2012, at 9:58 AM, "Pete Fowler" <pfdesign1(at)cox.net> wrote:



 	  Quote: 	
		   

 

 UN-like the CJ-6, it's been widely known the CJ-7 is just a license-built Yak.

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=370088#370088

Pete Fowler

Joined: 07 Jul 2009
Posts: 76
Location: California

Posted: Mon Apr 09, 2012 6:33 pm Post subject: Re: CJ-7 Pictures

Though I'm SURE you're kidding, because everyone knows the CJ-6 is not a Yak 18 copy, knockoff. or relative...but because the mistake persists, here's a good book on the subject.



My favorite quote: "The Yak-18A was duly studied by the design office of the Shenyang Aircraft Factory â€” and rejected as outdated. The reason was that the new model retained the basic airframe structure of the Yak-18...



http://www.scribd.com/doc/36078486/Chinese-Aircraft

GeorgeCoy

Joined: 02 Dec 2010
Posts: 310

Posted: Tue Apr 10, 2012 4:10 am Post subject: CJ-7 Pictures

Ahhh, but the engine is a license built Russian AI-14RA



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Pete Fowler

Joined: 07 Jul 2009
Posts: 76
Location: California

Posted: Tue Apr 10, 2012 6:03 am Post subject: Re: CJ-7 Pictures

And the Lancaster bomber uses Merlin engines but I'm pretty sure nobody would confuse one with a P-51.

cjpilot710(at)aol.com
Guest

Posted: Tue Apr 10, 2012 12:13 pm Post subject: CJ-7 Pictures

Ahhhhhh BUT the original engine on the prototype was a Cech "Doris B",  eight cylinder horizontal opposed engine.  It didn't make the grade because  of "harmonizing" between it and its prop.  So they went to an engine they  were already building under license - the AI-14RA.  The picture of the  prototype looks a whole lot like a T-34 in its nose.  Bushi designed the  "JJ-1" a 2 seat tandem jet trainer BEFORE the CJ-6.  You can see a lot of  CJ lines in its profile.  For "political" reason the jet wasn't  built.  What I've been able to ascertain, China's aviation industry had a  hard time convening its political machine, they were capable to design and build  aircraft without input from "mother Russia".

  

 Jim "Pappy" Goolsby

  

  In a message dated 4/10/2012 8:10:19 A.M. Eastern Daylight Time,  george.coy(at)gmail.com writes:

 [quote]-->    Yak-List message posted by: "George Coy"    <george.coy(at)gmail.com>



Ahhh, but the engine is a license built    Russian AI-14RA



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keithmckinley

Joined: 11 Aug 2008
Posts: 434

Posted: Sun Jul 15, 2012 4:32 pm Post subject: Re: CJ-7 Pictures

It's a bear 360 or vice versa..



http://bearaircraft.com/

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