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effectus(at)rogers.com
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 Posted: Fri Mar 26, 2010 3:22 pm Post subject: Wing jacks |
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Hi Ron,
Got mine at Part Source
Dave
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Ron B.
Joined: 17 Feb 2009
Posts: 103
Location: Nova Scotia
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| Posted: Fri Mar 26, 2010 4:32 pm Post subject: Re: Wing jacks |
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Thanks Dave,
I found a local number and I'll give them a call in the morning.
Ron
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Lew Gallagher
Joined: 04 Jan 2008
Posts: 402
Location: Greenville , SC
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| Posted: Sat Mar 27, 2010 4:30 pm Post subject: Re: Wing jacks |
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OK, I finished the jacks and think I may have answered my own question about why two are better than one. With one jack, you can jack one wheel at a time, but it takes a LOT of jacking since the opposite wing drops quite a bit before the wing you are jacking lifts the wheel. Even with another jack just snugged up to the opposite wing, it takes much less jacking on the target wing/tire to get it up, and the plane stays much more level/stable.
Here's another idea (thanks, Bill Z!) that addresses the hydraulic failure issue for the ram jack style. I measured the height both jacks needed to be to lift the wheels 3 or 4 inches off the ground (just happens to be the height to level the plane at the door sills with the nose wheel on the ground) -- comes to 34.5 inches -- then I drilled a 1/4 inch hole in the jack shaft to receive a safety pin. I countersunk the hole a bit, deburred/polished it so it wouldn't harm the seals. Works!
I also drilled a 5/8 hole down the top of the jack shaft and concaved out a "dish" around it with a die grinder to receive the studs I made that screw into the tiedown holes. The studs have a nut on them that I ground into a rounded shoulder. Now the studs are anchored into the jack, but are allowed to pivot as the wing angle changes with jacking.
Here are some pictures of the jacks in progress. I'll take one of the pin adaptation if anyone is interested.
Later, - Lew
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_________________
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NOW OFICIALLY BUILDER #40549
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