We are still using the wheel system I posted on 01/06. It is cumbersome, but not difficult. The children move the coop each morning. It takes 6-8 minutes for the move.
I have come up with two easier solutions. Unfortunately, they are both expensive. The first would be just an overbuilt "cam over" wheel on a lever design like you see on most tractors. The one we would require would probably take over $300.00 of custom welding work, plus materials, and a bit of trial and error. The second is to order a pair of fat tire Australian trailer jacks, or what they call Jockey wheels. Aussies have access to an amazing array of heavy duty "fat tire" jacks that would do the job. Unfortunately, that is another expensive option.
This is the link to the Australian Jockey Wheel Jack I think would do the job. I've spent some time looking for a US distributor of this product or something similar, but have had no success yet. I like this solution best:
http://www.manutec.com.au/default.a...RODUCTCAT&catid=41&catalogue=3&prodid=JWSW-11 With a pair of these, I believe I could move my tractor on those wheels alone in all but the wettest conditions.
This is an example of the ready to use tractor lift and wheel system I mentioned. I may just take the images from this site to the welding shop and get them to make one just like it, just "on steroids."
http://chickencoopwheels.com
I don't know what my coop weighs. However, I know that each of the four pneumatic tires I use are rated for 350# each. When I set it down, they spread out pretty good. This indicates, to me, that they are at or near capacity.
I welcome your insights and experiences with your tractor. Please post a photo when you get a chance.