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Prop Arc Size Question

 
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johngoodman



Joined: 18 Sep 2006
Posts: 530
Location: GA

PostPosted: Tue Oct 23, 2007 8:16 am    Post subject: Prop Arc Size Question Reply with quote

Getting ready to install my InAir LRI and need to keep it 24 inches outside the prop arc. It's 4 feet out on the wing to an ideal inspection port, but need to know the largest prop arc out there. Thanks.
John


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james.k.hovis(at)gmail.co
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PostPosted: Tue Oct 23, 2007 8:44 am    Post subject: Prop Arc Size Question Reply with quote

Measure the height to the center of your spinner (or center of the
prop attach flange on the engine) with engine installed from the
ground and subtract 9 inches. This will give you the the radius of
the maximum prop arc based on typical aircraft design practice:
provide minimum of 9" ground clearance for a prop arc.

Kevin Hovis.

On 10/23/07, johngoodman <johngoodman(at)earthlink.net> wrote:
Quote:


Getting ready to install my InAir LRI and need to keep it 24 inches outside
the prop arc. It's 4 feet out on the wing to an ideal inspection port, but
need to know the largest prop arc out there. Thanks.
John

--------
#40572 QB Wings, QB Fuse arrived
N711JG reserved


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http://forums.matronics.com/viewtopic.php?p=141315#141315



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Tim Olson



Joined: 25 Jan 2007
Posts: 2881

PostPosted: Tue Oct 23, 2007 9:01 am    Post subject: Prop Arc Size Question Reply with quote

Well, it's an 80" prop, so 40" is the arc....so 64" as the minimum.
Tim Olson - RV-10 N104CD - Flying
do not archive
johngoodman wrote:
Quote:


Getting ready to install my InAir LRI and need to keep it 24 inches outside the prop arc. It's 4 feet out on the wing to an ideal inspection port, but need to know the largest prop arc out there. Thanks.
John

--------
#40572 QB Wings, QB Fuse arrived
N711JG reserved




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=141315#141315





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johngoodman



Joined: 18 Sep 2006
Posts: 530
Location: GA

PostPosted: Tue Oct 23, 2007 4:31 pm    Post subject: Re: Prop Arc Size Question Reply with quote

Since I'm still just doing wings and Fuselage, I don't have an engine, hence the question. But thanks, I've got the info I need. It's about 2 feet from the spinner to the wing root, so another 40 inches brings it very close to the bay I want to use. I'll probably play it safe and move it out one more bay.
John


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