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03-29-2017, 03:15 PM
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Join Date: Jun 2010
Location: Edgewood, NM
Posts: 203
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Edge Distance
Do the edge distance minimums vary depending on type of load (shear, tension, etc.), magnitude of load, type of material (steel or Al, sheet metal, structural shape, etc.), and load applied? 1.5D? 2.0D? I've seen conflicting advice. What is the standard of practice for our kits?
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03-29-2017, 03:51 PM
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Join Date: May 2005
Location: Rescue, CA. KROB
Posts: 352
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Stand practice for the -14 is follow the directions. I haven't had to research anything like that.
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Rob Lasater
Rv-14 flying baby, yeah.
Paid Dec 2019
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03-29-2017, 03:56 PM
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Join Date: Jun 2010
Location: Edgewood, NM
Posts: 203
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Yeah, not helpful. Even if you follow the directions, when you match drill the elevator horns, depending on how the tolerances stack up, you could possibly be drilling too close to the edge, unless you know what the minimum is.
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03-29-2017, 04:01 PM
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Join Date: Apr 2015
Location: Ponte Vedra, FL
Posts: 1,474
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Quote:
Originally Posted by asw20c
Yeah, not helpful. Even if you follow the directions, when you match drill the elevator horns, depending on how the tolerances stack up, you could possibly be drilling too close to the edge, unless you know what the minimum is.
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The instructions have you use the aft most horn (marking distances to keep good edge margins) for the first hole so that the matching hole goes into the other horn with good edge distance. If your horns are off so much that you're flirting with edge distance on the forward one you may want to call Van's for advice.
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03-29-2017, 05:11 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
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Standard is 2D, however, 1.5D or less may be approved by the engineering folks depending on the material, loads etc. Anything less than 2D you should seek approval.
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Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
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