I hope this is an appropriate area.
I just recently acquired some farm equipment; led by a 52hp Kubota tractor.with front end loader. I believe most (all?) Kubota tractors with a FEL come with a bucket attached to the FEL. I also have a set of pallet forks (both bucket and pallet forks are quick detach).
I have an immediate need to reduce the length of grass on my lawn (4.5 acres), but I can see my using loose hay in the future.
Searching through various articles, I happened across buckrakes. Some can be quite big. The article that caught my eye the most is:
https://silktreefarmworld.wordpress.com/2015/08/08/farmhand-friday-hay-on-a-human-scale-part-iii-gathering-hay/
His Mark III buckrake, is meant to fit a bucket. Since I have pallet forks, it makes more sense to make use of that as a "platform".
The Silk rake, has the fingers protruding 5 feet, I think my pallet forks are 4 or 4.5 feet. What I think I do, is to make a "pallet" which the forks slip into, designed for a fork spacing of something like 4-5 feet, which has as a "base" on the underside, as a 4x4 to which I will mount the 2x4 "fingers". The fingers all "bare" (bear? as in bearing) on the 4x4, and the 4x4 si what one fastens (somehow) to the bottom of the pallet forks (or bucket if that is all you have).
To actually use this rake, the pallet forks would have to be pointed down a little (to keep from dragging the wood on the ground).
Maybe 6 inches before the end of the forks, a 1x3 goes across the bottom of the "fingers", and another 1x3 goes across the top of the fingers. Across the tops of the fingers, in front of this 1x3 tying things together; is a strip of welded wire utility fence of reasonable width (the utility fence I have has 2x4 inch openings). The idea of the utility fence, is to get "under" the uncut grass level, so as to "strip" as much of the cut hay off the grass as is possible. Murphy says the hay just gets tangled in all this utility fence and makes a big mess.
The ends of the fingers need to be "radiused" to keep from digging in. I am guessing one first makes a 22.5 degree cut, then a 45 degree cut and finally a 67.5 degree cut. And maybe run a belt sander over it to smooth it out a bit more. You want to run with the tips of the fingers riding on the ground, but with the pallet forks tipped at some angle less than that required to have the fingers "dig in".
As a person is basing this on 4x4 (probably 8 foot long), it might make sense to make this 8 feet wide (and go to 5 foot wide spacing for the pallet forks)? For some kind of "production" rake, you probably want the "side fence" on either side to contain hay that wants to flow past the sides.
This article at ScytheConnection points to why one might want to gather loose hay.
http://scytheconnection.com/loose-ways-of-making-leafy-loose-hay/
Is my thinking wrong on this? Is there a better way? Design improvements?
I am on 40 acres. I suspect at some point, over half the land will be trees. Take off the 4.5 acres for the house and lawn, and at most I could have 15 acres for hay. In practice, I suspect 5 might be a better number?