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01-25-2016, 09:53 AM
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Join Date: Oct 2012
Location: New Ulm, Minnesota
Posts: 283
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I saw on this site how one poor RV owner's tie down bolt broke and the jack went through the bottom of his wing. So I changed my method to jacking like in the picture below.
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Robin Mckee
New Ulm, MN 56073
RV3b N219BB
420 hours and counting 
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01-25-2016, 07:45 PM
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Join Date: Jan 2005
Location: LaVista, NE
Posts: 60
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I have a couple modified bolts I put in the tie-down locations. They are half-spheres (mushroom looking) and sit in the cup of the ram on the jack. Made them by chucking up a bolt in a drill and taking it to the grinder. I think bolts would be a lot stronger than the ring since they are supposedly of a known strength (grade 5 or 8 or whatever). I have no idea what stuff my rings are made of, they were bought form a reputable vendor that advertises on this site, but trust the rings better in tension (functioning as a tie-down) than compression or side loading. (Note-I do think side loading needs to be limited as much as possible to keep the jack from perforating the wing, but there's bound (pun intended  ) to be some.)
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Chris Halfman
La Vista, NE
-7A, 300+ hours on the Hobbs, ECi O-360 185 hp, GA200L Whirlwind prop
Anything I post on here may not be the best way, the right way, the only way, or even an accepted way to do something, but it's how I did it. Use the information accordingly.
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01-25-2016, 08:06 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,665
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Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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01-25-2016, 09:12 PM
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Join Date: May 2010
Location: Burlington On. Ca
Posts: 136
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Bolt out
Thanks everybody for your response. A drill with an easy out worked fine. The stub was not in very tight so it was really a non issue.
Al
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Al Grant
Flying RV6, O-320, 160hp
Burlington, On
Dues Paid
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