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06-21-2014, 12:41 AM
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Join Date: Dec 2007
Location: Ballarat, Australia
Posts: 6
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Silly question.
Hi Guys, new to the forum. Started a 7 HS. Just started dimpling the skins and have a question on the understucture. Are the same dimple sizes used on that also. Im thinking yes. Im talking about the ribs etc.
Thanks heaps
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06-21-2014, 12:56 AM
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Join Date: Jun 2009
Location: Australia and NZ
Posts: 187
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Hi Mick,
Yes the same dies are used for the understructure as for the skins. Some people use what they call 'tank' dimple dies for the understructure, as they give a slightly deeper dimple which may allow for a nicer skin finish, but to be honest I've done it both ways and I can't tell the difference!
Cheers,
hugh
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06-21-2014, 01:11 AM
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Join Date: Dec 2007
Location: Ballarat, Australia
Posts: 6
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Thanks Hugh
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06-21-2014, 06:42 AM
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Join Date: Nov 2007
Location: Waukesha, Wisconsin
Posts: 554
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No need to pre drill the hole before dimpling just dimple and rivet
__________________
Paul 'Bugsy' Gardetto, Col, USAF (ret)
Milwaukee, Wisconsin (Timmerman Field)
N377KG - Flying (250 hrs)
RV-7A, Aerosport O-360, WW200RV
Advanced Flight 5400
Avidyne IFD440
Paint by planeschemer.com
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06-21-2014, 07:35 AM
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Join Date: Jan 2008
Location: Cincinnati
Posts: 56
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Quote:
Originally Posted by Bugsy
No need to pre drill the hole before dimpling just dimple and rivet
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 Not too sure about that. Might want to check with the factory. You're setting up stress risers by not pre drilling.
__________________
Bud Newhouse
RV8
Lunken Airport
Cincinnati
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06-21-2014, 07:43 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,953
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Debur
Quote:
Originally Posted by Joker
Not too sure about that. Might want to check with the factory. You're setting up stress risers by not pre drilling. |
Agree. At least debur before dimpling.
__________________
Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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06-21-2014, 09:55 AM
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drill and debur
Like the header says
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