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s.e. Pa | I have built a bunch of 8x16 flat wagons before. I think you could extend to 9' wide, but not 24' long. I have always used 2 pieces of 3x8 oak 16' long for stringers. On top of this 3x4 cross pieces every 2'. You can drill 12" through and use a carriage bolt, but they may eventually break due to flexing. I prefer using maybe 10" of 2x2 angle bolted to the cross pieces and stringers to hold them together. Then I use 1x8 rough sawn oak 16' long for the bed. I started using this design when 100 bales was an average load.
To extend to 9' wide, maybe you should put the cross pieces on 16" centers. To extend to 24' long I think you need steel channel, and a pretty stout running gear. The other option I have seen is to use either beam or channel stringers, and treated 2x lumber perpendicular to the stringers as the floor. And then another 2x running lengthwise at either side of the wagon. These doesn't seem as strong to me, but this is how the heavier wagons seem to be built. Also look at lifetime wagons by G.L. Nause. I have been baling more hay and looking at these wagons. They are not cheap though, I think they are comparable in cost to a gooseneck trailer.
Josh | |
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Anyone have any plans for hay wagon flat beds?
