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08-12-2008, 05:22 PM
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Join Date: Feb 2006
Location: Baltimore, MD
Posts: 1,039
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Camlock Spacing Needed
Hello,
I am going to install a couple of SkyBolt fasteners on the bottom of my cowl but don't have them yet. Can anyone give me the measurement they used between the center of the fastener and the forward edge of the firewall. Here's a pic of the measurement I need:
Thanks a bunch! |
08-12-2008, 05:57 PM
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Join Date: Jan 2006
Location: Green Bay, WI (GRB)
Posts: 476
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Camlock spacing
Hello Mike,
I used .750", seemed to work out well.
__________________
Don Pansier
Green Bay, WI (GRB)
RV-7 N450DP
W9LYX
Antennas for Experimental Aircraft
www.deltapopaviation.com
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08-13-2008, 04:58 AM
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Join Date: Oct 2005
Location: Melbourne, Australia
Posts: 1,867
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I used 5/8" which is the manufacturer recommended minimum (Milspec Camlocks). The reason I did so is because many builders have problems with some of their aluminium tabs hitting the built up honeycomb core on the Vans cowl. Placing the hole in the tab as close to the firewall as permissable (and therefore reducing the overall dimension of the tab) reduces the likelihood of hitting the honeycomb.
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You’re only as good as your last landing 
Bob Barrow
RV7A
Last edited by Captain Avgas : 08-13-2008 at 05:02 AM.
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08-13-2008, 06:41 AM
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Join Date: Jan 2005
Location: Chandler, AZ
Posts: 2,901
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Two Concerns
I used 5/8" like Bob mentioned. To me the spacing between the fasteners is also critical. A couple of friends recommended to reduce the spacing to keep the in flight puckering to a minimum.
I used 3.5" between fasteners and this works great.
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Darwin N. Barrie
Chandler AZ
www.JDair.com
RV-7 N717EE-Flying (Sold)
RV-7 N717AZ Flying, in paint
EMS Bell 407,
Eurocopter 350 A-Star Driver
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08-13-2008, 12:50 PM
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Join Date: Jan 2005
Posts: 3,642
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Need slightly more than 5/8"
It needs to be slightly over 5/8". The Milspec instructions indicate that the camlocs should have 5/8" edge distance on the cowl. However, you will also need a little bit of paint gap between cowl and fuselage. I added on 1/16" (for a total of 22/32") to provide both a paint gap as well as some fudge factor in case I accidently sanded the cowl back too much. Hope this helps.
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Steve M.
Ellensburg WA
RV-9 Flying, 0-320, Catto
Donation reminder: Jan. 2021
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08-13-2008, 02:07 PM
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Join Date: Apr 2006
Location: south carolina
Posts: 1,111
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.750 and less than 4" between them
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William Weesner/ still kicking.
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08-13-2008, 02:25 PM
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Join Date: Feb 2006
Location: Baltimore, MD
Posts: 1,039
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Thanks a lot for the input guys. I made up my backing strips today and will drill the initial holes tonight.
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08-13-2008, 07:07 PM
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Join Date: Oct 2005
Location: Melbourne, Australia
Posts: 1,867
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Quote:
Originally Posted by RV7Guy
I used 5/8" like Bob mentioned. To me the spacing between the fasteners is also critical. A couple of friends recommended to reduce the spacing to keep the in flight puckering to a minimum.
I used 3.5" between fasteners and this works great.
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Same here....3.5" between camlocks. Too many builders try to space out the camlocks to cut cost....but they end up with the cowl "pillowing".
__________________
You’re only as good as your last landing
Bob Barrow
RV7A
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