As far as I know from the literature I have seen and from comments on the various forums, there is no "authentic Farmall Cub stone rake"
If one may have been available at all it would have been manufactured by a third party possibly approved by IH. Jim Becker, Guy Fay and probably Mike Schmudlach would be in a better position to say yeah or nay on this point.
As far as control for depth/angle the belly mount would be far superior. Would not be all that hard to fabricate.
Also, rockett88 (John), bought a 3-point stone rake and modified the hardware to fit the Cub and apparently works real well.
You are right, As the kids today say - it is waaaay cool!
From what I can tell, it is just a standard 3x3 or 4x4 angle iron with tines bolted to it. I cannot make out the mounting hardware either, so it will be a design challenge.
I have talked to a buddy (he is the head mechanic for the construction company that is playing in my back yard
) and he is of the opinion that it would not be hard to fabricate. It would just be tedious work drilling about 35 pairs of 3/8" holes to mount the tines. It is really hard to make out, but there is an pivot plate with pins to angle the blade in either direction. This also would be rather simple - I think I would set it up for 90 deg., 45 deg. and 22.5 degrees.
I played with the jpeg a bit, maybe this might make it easier to see.
To fabricate, my thoughts would be to use say 2-1/2 x 2-1/2 x 1/4" angle, tines from a spring tooth harrow - depending on the size of the tines any where from 15 to 30 of them equally spaced - drilled and bolted to the angle. There would have to be some say 2"x2" square stock to make a pair of arms/support bars that would go back to either the drawbar or the mounting pads. There would have to be another 2"x2" square stock with the pivot plate welded to it and the arm extending to the front tool bars. I would think that would provide enough stability. Both these arm assemblies would have to be able to roll vertically to account for lift and the lift would be accomplished either with chains or lift rods similar to the old Cub Blade. Just a few thoughts. Remember, I am a cabinetmaker not a steel fabricator, so my ideas could be full of hooey
I have two major projects that I would like to get done this winter. One is the reel mower project and the second is the stone rake.
My kids want a rugby pitch in the back 40, so I will definitely need the rake to get rid of the stones and finish grade the pitch, and the mower to cut the grass a couple times a week. Gee - I just thought about it - SEAT TIME
Now ifn some of the creative minds that haunt this forum were to come up with some suggestions, they would be accepted with open arms and a glad heart
I would think that this could be fabricated for probably around $100.00 to $200.00 for the steel, tines and bolts etc.