I just got a very good deal on two wing jacks that I was thinking about using on the Sedan.
As there are no jack points on the wings, that means that if I am going to do this I have to make some myself. These are for a Cessna 210 so more than able to jack the plane up.
Anyone ever do this and if so any suggestions?
Thx,
Joe A
Any Sedan owners ever make their own jack pads?
Re: Any Sedan owners ever make their own jack pads?
Joe:
If I were doing it I would try to make something that would adapt to the tie down rings. They are way stout, but I dont know if they would balance or not.
Dik
If I were doing it I would try to make something that would adapt to the tie down rings. They are way stout, but I dont know if they would balance or not.
Dik
Re: Any Sedan owners ever make their own jack pads?
Hi Joe. I'm glad you got a good deal on Cessna wing jacks because that means you didn't waste too much money trying to use them for your Sedan. I am assuming you hope to use these jacks to support the plane while you replace the sagging landing gear bungees on your plane. There really is no good place to position them on the 15AC wing.
Please disregard the previous posting that suggests using the tie down ring as a support post. Go back to the 15AC wing inspection posting and look at the pictures of how the tie down ring is mounted to the spar. This ring is only designed to steady the plane while on the ground in the wind. You can see in the pictures that the rivit pattern and small bracket are adequate to keep the plane from blowing around, but not to support the weight of the whole plane (or at least half of it) when you try and lift the plane off the ground at this point.
The small wing jacks we use to lift the Champs and Chiefs surround the main lift strut where it meets the spar attach bracket. That part of the spar is reinforced and designed to accept the load. The Sedan spar has no reinforcing in the tie down ring area. There is a strong strut bracket held on by several bolts, but I would not use this area either for lifting like we do in the smaller Aeroncas.
There is a solid aluminum tube which makes the connection between the strut and the strut bracket on the spar. Pushing up on this area stresses that tube. If you took one of these tubes off the wing and rolled it on a flat table, you will see it wobble as it rolls. Almost every one of these parts has taken on some sort of bend over their lifetime. I believe the sideways stresses put on these tubes if you try and lift the plane there would be damaging to the part.
How do floatplane guys raise their Sedans when they convert to floats and then back again? Even if you are successful in making a jack pad that could be used to lift the plane for your bungee replacement, the sideways forces you produce when resetting the gear with the new bungees just might be strong enough to push the plane off of the jacks.
Please disregard the previous posting that suggests using the tie down ring as a support post. Go back to the 15AC wing inspection posting and look at the pictures of how the tie down ring is mounted to the spar. This ring is only designed to steady the plane while on the ground in the wind. You can see in the pictures that the rivit pattern and small bracket are adequate to keep the plane from blowing around, but not to support the weight of the whole plane (or at least half of it) when you try and lift the plane off the ground at this point.
The small wing jacks we use to lift the Champs and Chiefs surround the main lift strut where it meets the spar attach bracket. That part of the spar is reinforced and designed to accept the load. The Sedan spar has no reinforcing in the tie down ring area. There is a strong strut bracket held on by several bolts, but I would not use this area either for lifting like we do in the smaller Aeroncas.
There is a solid aluminum tube which makes the connection between the strut and the strut bracket on the spar. Pushing up on this area stresses that tube. If you took one of these tubes off the wing and rolled it on a flat table, you will see it wobble as it rolls. Almost every one of these parts has taken on some sort of bend over their lifetime. I believe the sideways stresses put on these tubes if you try and lift the plane there would be damaging to the part.
How do floatplane guys raise their Sedans when they convert to floats and then back again? Even if you are successful in making a jack pad that could be used to lift the plane for your bungee replacement, the sideways forces you produce when resetting the gear with the new bungees just might be strong enough to push the plane off of the jacks.
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captainpat
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- Joined: Mon Sep 10, 2007 11:42
- Location: Culpeper, VA.
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Re: Any Sedan owners ever make their own jack pads?
Hi Joe,
Airplanes on jacks have always been way scary to me. As an alternate to the jacks you might consider the
method used to lift a champ up one gear at a time. Using a engine hoist and one of the tie downs you lift the airplane by the engine mount while holding one wing down at the tie down ring. The back bumper or trailer hitch on your pickup
supplies the weight. The Hangar 9 website illustrates this pretty well. I used this method when I replaced my oleo
springs.
Pat Austin
Airplanes on jacks have always been way scary to me. As an alternate to the jacks you might consider the
method used to lift a champ up one gear at a time. Using a engine hoist and one of the tie downs you lift the airplane by the engine mount while holding one wing down at the tie down ring. The back bumper or trailer hitch on your pickup
supplies the weight. The Hangar 9 website illustrates this pretty well. I used this method when I replaced my oleo
springs.
Pat Austin
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sedanpilot
- Posts: 113
- Joined: Fri Nov 19, 2004 03:12
- Location: Alaska
- Contact:
Re: Any Sedan owners ever make their own jack pads?
Brian: I have a set of lifting eyes on the front spar bolts that live on the airplane. In a hanger with an overhead lift, they can be used to lift the whole airplane and are very stout. I got mine from Burl, but they are very similar to the ones the F. Attlee Dodge sells, except the bolt size is bigger.
The other way I have lifted the airplane is using a 4x4 under the axles. I do this for ski change overs in the spring and fall. I routed a groove in it so that it sits under the inboard end of the axles from the left to the right gear. Then a jack goes under the 4x4 just inboard of the wheel.
I have also supported the airplane by the wing before by using a jack that spread the load over the two spars with a sort of H shaped spreader thingy. I didn't like this much because it relied on friction and a little duct tape to keep the pads from slipping. It gave me me willies the whole time the airplane was off the ground.
The other way I have lifted the airplane is using a 4x4 under the axles. I do this for ski change overs in the spring and fall. I routed a groove in it so that it sits under the inboard end of the axles from the left to the right gear. Then a jack goes under the 4x4 just inboard of the wheel.
I have also supported the airplane by the wing before by using a jack that spread the load over the two spars with a sort of H shaped spreader thingy. I didn't like this much because it relied on friction and a little duct tape to keep the pads from slipping. It gave me me willies the whole time the airplane was off the ground.
Re: Any Sedan owners ever make their own jack pads?
Pat,
Thanks and have seen this before. It is one option.
SP,
I ended up using my engine hoist with a canvas sling picking up the front of the airplane with the engine mount. Its run under the back of the engine and that way does not stress the engine.
BTW, am doing this to replace my landing gear bungees! Had thought about the 4X4 method and used that on my Chief but not going to work when doing bungees.
Thx, Joe
Thanks and have seen this before. It is one option.
SP,
I ended up using my engine hoist with a canvas sling picking up the front of the airplane with the engine mount. Its run under the back of the engine and that way does not stress the engine.
BTW, am doing this to replace my landing gear bungees! Had thought about the 4X4 method and used that on my Chief but not going to work when doing bungees.
Thx, Joe