Well, I finally got around to making one up the other day and thought I'd post a few pics if anyone else was interested. I decided to go against adjusting the vanes and tailboard because it would mean dealing with 23 bolts every time I wanted to change from windrowing to spreading.
A wider V that went outside the body of the machine, and bolted to the axle would have been nice, but I was worried about it getting too close to the ground, and needing the extra room up top for the axle to pivot without doing damage. Guess I'm a bit paranoid about blocking her up
This design is lightweight, pretty simple, and attaches with 3 bolts per side. I used 25mm RHS, and some 1mm galv sheet
Here's the basic frame and mounting points I started with. The tailboard is shifted to the lower position and it bolts directly to that, and also to the chopper frame at the rear.
Frame is 600 x 800mm. I added another 400mm towards the rear later. The rear corner of the frame would catch on the chopper if it was turning, but the chopper is disconnected, so it shouldn't be a problem.
I also drilled a 'midway' setting for the cob deflector handle, so it directs the straw more towards the front of the V, but still away from the chopper as Phantom pointed out.
Galv sheet was tekked on. I decided to add a strip of rubber belting to the bottom with teks, so that it could be narrowed up if required. Better to start too wide, than too narrow!
All finished up it looks like this.
From behind you may just be able to make out the widths I texta'd onto the bottom tailboard.
Without the rubber belting, the gap at the bottom is 600mm, and is 700mm off the ground.
With the belting on the gap is around 400mm wide, and 500 off the ground. I'm thinking this might be a bit too narrow, and might need a snip?
It's a 5 minute job to fit/remove, but at this stage the design is unproven, so if anyone can see any glaring errors, don't be shy about pointing them out!
Hopefully I'll be able to get it into the paddock next week if all goes well, and we'll see how many modifications need to be made.