Mark, Here’s some pictures I found on my hard drive. I can’t remember where I found all of them but it seems you can find something once online, and then months later you can’t find it again.
This might help you out with your build.
(http://sphotos-a.xx.fbcdn.net/hphotos-prn1/553162_10151024069326912_61876669_n.jpg)
Close up of the wing attachment on the BN dozer in the shops.
(http://sphotos-b.xx.fbcdn.net/hphotos-snc6/283725_10151024069656912_364832407_n.jpg)
The wing on your jordan spreader should look similar to this when it’s fully extended.
(http://sphotos-b.xx.fbcdn.net/hphotos-prn1/558230_10151024069736912_32375145_n.jpg)
Normal plowing doesn’t use the side wings, it’s just mostly for clearing the right of way a little more.
(http://sphotos-b.xx.fbcdn.net/hphotos-ash4/428884_10151024069911912_1367794840_n.jpg)
This is about as flexiable as the wing can get too without breaking. I doubt anything in scale (on the front hinge) would be strong enough to handle this type of plowing… A universal joint for the back might be strong enough from an O scale locomotive and be a little more scale sized…
(http://sphotos-a.xx.fbcdn.net/hphotos-ash3/528146_10151024069866912_14006363_n.jpg)
If you really want to make things interesting PSME has in their catalog working hydraulic and pneumatic pistons of various sizes… 