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O-320

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richs(at)presys.com
Guest

Posted: Fri Nov 23, 2007 8:45 pm Post subject: O-320

Will an 0-320 work on a series 5.  Rich

   [quote][b]

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darinh

Joined: 20 Apr 2006
Posts: 327
Location: Utah

Posted: Fri Nov 23, 2007 11:32 pm Post subject: Re: O-320

You would probably need 40 lbs of lead in the tail and beef up the firewall tubing and mount.  I wouldn't do it but I know that people have.  If you are looking for something like a Kitfox for a O-320 or O-360, look at the Avid Magnum...they are built for those engines.



There has been much discussion on engines and weight on the list and it seems the general consensus is that engines heavier than the O-200 and IO-240 are not good matches for the Fox.  Most think that even these engines are on the heavy side but do seem to be fairly popular.

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_________________
Darin Hawkes
Series 7
914 Turbo
Kaysville, Utah

Bob

Joined: 24 Oct 2006
Posts: 89
Location: Damascus, Maryland, USA

Posted: Sun Nov 25, 2007 6:50 pm Post subject: Re: O-320

No.



Backwards engineering, the design strongly looks to have been optimized for a 200 pound engine or less and I've heard similar from John. The tubes are small diameter and the mount pick-ups look not to have been designed for such loads in a heavy landing.  Plan to mount the battery on the tailpost, add 20 pounds of copper starter cable, plus some lead.  The useful load would probably be down to you and an hour of gas. The fuel flow would also cut you to a very short endurance.   A 150+ hp engine could seriously exceed redline in cruise.  Because of always being at or over gross, it'd take longer to get off the ground and slow to accelerate out of the high-drag (nose-high) attitude.



I recently saw a Zenair 601HD with an empty weight of over 900 pounds. Despite the big Subaru engine, the plane was quite slow, because the wing had to be kept at such a high angle of attack for the heavy load.  



Keep these planes light and they'll both cost less and run better.



Bob

A&P, Aero Eng

Kitfox V Vixen, partial complete, no engine

Damascus, MD

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_________________
Remember that internet advice may only be worth what you pay.

richs(at)presys.com
Guest

Posted: Sun Nov 25, 2007 7:55 pm Post subject: O-320

Thanks a million, Bob. I appreciate your comments. Rich

---

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kitfoxjunky(at)decisionla
Guest

Posted: Mon Nov 26, 2007 2:25 pm Post subject: O-320

No. 

 

Gary Walsh

 KF IV  Anphib 912S

 C-GOOT

 www.decisionlabs.com/kitfox

 

 do not archive 

 

 

    "rich smith" <richs(at)presys.com> 

Sent by: owner-kitfox-list-server(at)matronics.com 

11/23/2007 11:39 PM 

Please respond to kitfox-list          

        To:        <kitfox-list(at)matronics.com> 

        cc:         

        Subject:        O-320 

 

 

Will an 0-320 work on a series 5. Rich 



 

          -Matt Dralle, List Admin.

 -

 

  

 [quote][b]

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