Actually automating the whole thing within the strength and weight of the design will be impossible.
Bingo - you get a cookie !
That's the exact reason that I'm looking to fab my own unit based on the design I posted a picture of, earlier in this thread.
Automating that design is extremely simple - since I already have rear remotes - all it would take is a single, fairly small diameter hydraulic cylinder & 2 hoses. It could easily be emptied without ever leaving the tractor -
since the only thing required to dump is opening the door.
I'm almost finished vacuuming up the leaves and mowing the grass for the final time this year - and I'm between
15 and
20 cart loads at this point, this time around. If I had to guess, based on how much I picked up this time, when the grass was short, I probably did 40 or more loads when I cut and vacuuming the first time this year.
While I was able to get the unit to dump out fairly easily for about 1/2 of the loads this time, I still had to fight to do that - whether it was the steel flex pipe from the vacuum to the cart falling off, the front retainer pin mechanism not opening fully so that I could dump or undump, fighting the door to get it aligned, or very carefully cleaning all the crud out of the door latches so that they don't pop open out in the middle of the field.
I can't leave the fuel feed valve on the gas tank open for any length of time when it isn't running - otherwise it will flood the carb - and empty the entire tank of gas (needs maintenance, I know)
In the end, one could spend all kinds of time, money, and effort making a less well-designed and lightly-built unit do essentially the same thing - open and dump - that a
well-built unit, using the design I posted a picture of earlier, will do
easily ..... and in the end all you will have is a unit which is more mechanically complex (with potentially more chance of problems) and is still a very lightly constructed unit.
Not rain on anyone's parade, but I'd prefer to invest my time effort and money making something that has much better engineering, much better construction, and will hold up to
many years of use. It just ain't that difficult to do - and when it's finished my TracVac will be for sale.
BTW, I checked TracVac's website and I was wrong about which unit I have - it's the largest cart, but only an 8 hp engine - so I have an 880.