Today's Message Index:
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1. 06:11 AM - Re: cowl hinges (rveighta)
2. 11:52 AM - cowl hinges (James H Nelson)
Message 1
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Rick, I built an 8A, but I'm pretty sure the cowl attaches the same way as for
a 9A. You have two sizes of piano hinge in your finish kit; the widest (when opened)
one attaches around the circumference of the cowl halves at the firewall.
This hinge also uses a heavy duty stainless steel pin. The smaller hinge attaches
horizontally and uses a carbon steel pin, which in my case was already
installed in the hinge. In my case, the wider hinges had regualr carbon steel
pins installed and I had to remove these and install the seperately supplied stainless
pins.
Of course, when I say the wider hinge installs around the circumference of the
cowl, I don't mean all in one piece, but in segments, per the drawing. Don't know
what the "1/8" references.
Walt Shipley Flying RV-8A, RV-8 Finishing
DO NOT ARCHIVE
-----Original Message-----
>From: Mick Muller <mmul6471@bigpond.net.au>
>Sent: Mar 30, 2007 10:00 PM
>To: RV-9A@yahoogroups.com, rv9-list@matronics.com
>Subject: RV9-List: cowl hinges
>
>
>I have been checking on my cowl preparations and installation
>instructions for my RV9A. It has an O320E3D engine installed in it. The
>finish kit has one aluminium hinge 6ft long for joining the two cowl
>halves together, fairly easy to identify. However, the Vans contents lists
>says
>there is also 9 ft of 1/8 piano hinge. Exactly what dimension does the 1/8
>refer to? Is it supposed to be the width of the hinge, the thickness of the
>hinge, or the diameter of the pins?(1/8 does not fit any of these
>measurements).
> I received not one nine foot length, but a six foot length and a three foot
>length. I also received thee other three foot lengths of piano hinge which
>are of a lighter gauge, (two are 1/16 inch thick, the third piece slightly
>thicker) but are not as wide as the six foot and three foot larger ones.
>Does anyone know where each bit resides?
>
>I emailed Vans with this question, but after 5 days have received no reply,
>perhaps they are busy getting ready for sun'n'fun.
>Thanks,
>Mick Muller,
>Builder 90701
>
>
Message 2
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Mike,
The hinges are determined by the pin diameter. I had some
similar problems when I put my cowling together. The lower hinges (down
both sides and the two along the bottom) all use "full size 1/8" pins".
The upper cowling uses a smaller diameter pin instead of the full size
pin . The reason for this is you have to use a smaller dia. pin to go
around the curvature of the cowling. The actual dia. of the top cowling
pin is .089" and the lower cowing pin is .117" (1/8"). On the upper
pins, I put a 90 deg.bend of about 1-1/2" at the end that you will have
to hold on to when placing and removing them. I also floxed the hinges
in addition to riveting to keep things neat from shaking about. I did
this to the lower hinges in addition to the upper ones. I think I have
pix of them on my web site if you want to look.
www.websites.expercraft.com/jimn
Jim
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