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sshook(at)cox.net Guest
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Posted: Sat Mar 11, 2006 7:17 am Post subject: Question - Countersinking Wing Spar |
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I have come to the point where its time to CS the main spar and the #30 Countersink that is recommended by the plans seems to run out of blade before it makes the CS hole deep enough for the #8 screw. My test piece that I am using is dimpled correctly. I have the 3-blade CS set from Cleaveland.
PS) I already have made myself a pilot out of a scrap 1/8 aluminum stock. That part works great
Any help would be appreciated.
Scott
N696JS – Wings
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dan(at)rvproject.com Guest
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Posted: Sat Mar 11, 2006 7:50 am Post subject: Question - Countersinking Wing Spar |
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Oh, also, get yourself a c-sink cutter with a larger diameter. Sorry, I misread your question at first. A larger diam cutter will fix the problem.
)_( Dan
[quote] ---
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dan(at)rvproject.com Guest
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Posted: Sat Mar 11, 2006 7:50 am Post subject: Question - Countersinking Wing Spar |
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Follow the instructions. Rivet the nutplates first they will serve to center the pilot.
When I built mine I didn't trust that. I could have. I wasted all sorts of time using a backup strip with a pilot centering hole. Worked fine but took too long. Could have done it in less than half the time -- by (a) following the plans, and (b) using a ball bearing microstop cage rather than the cheap bushing version that came with my Avery kit (I upgraded to a ball bearing cage from Avery eventually).
)_( Dan
RV-7 N714D (833 hours)
http://www.rvproject.com
[quote] ---
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sshook(at)cox.net Guest
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Posted: Sat Mar 11, 2006 9:21 am Post subject: Question - Countersinking Wing Spar |
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I have a 3/8 #40 pilot, 3/8 #30 pilot, a 7/16 #27 pilot and a 7/16 #19 pilot. I moved up to the 7/16 #27 pilot but did not try it with the nutplate installed. I just enlarged my homemade “tool” a bit to accommodate the pilot.
Scott
N696JS – Wings
From: owner-rv7-list-server(at)matronics.com [mailto:owner-rv7-list-server(at)matronics.com] On Behalf Of Dan Checkoway
Sent: Saturday, March 11, 2006 8:50 AM
To: rv7-list(at)matronics.com
Subject: Re: Question - Countersinking Wing Spar
Oh, also, get yourself a c-sink cutter with a larger diameter. Sorry, I misread your question at first. A larger diam cutter will fix the problem.
)_( Dan
[quote]
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sshook(at)cox.net Guest
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Posted: Sun Mar 12, 2006 4:06 pm Post subject: Question - Countersinking Wing Spar |
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Thanks for the follow-up Dan. Worked perfect!! I rechecked my test dimple and the skin was slightly off. I was able to complete both spars’ countersinks yesterday.
From: owner-rv7-list-server(at)matronics.com [mailto:owner-rv7-list-server(at)matronics.com] On Behalf Of Dan Checkoway
Sent: Saturday, March 11, 2006 8:49 AM
To: rv7-list(at)matronics.com
Subject: Re: Question - Countersinking Wing Spar
Follow the instructions. Rivet the nutplates first they will serve to center the pilot.
When I built mine I didn't trust that. I could have. I wasted all sorts of time using a backup strip with a pilot centering hole. Worked fine but took too long. Could have done it in less than half the time -- by (a) following the plans, and (b) using a ball bearing microstop cage rather than the cheap bushing version that came with my Avery kit (I upgraded to a ball bearing cage from Avery eventually).
)_( Dan
RV-7 N714D (833 hours)
http://www.rvproject.com
[quote]
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http://www.matronics.com/Navigator?RV7-List |
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