I have a
chipper like the one in the original post. It's green, might be Mackissic.
Chipper chute might be 3" square, shredding chute obviously larger. It is definitely light duty. Good shredder, fair
chipper. My HP isn't a problem as I drive it with a JD 1020 (about 35 HP). No blower and exhaust chute means that the chips pile up under the machine and you either move it periodically or shovel the chips out.
I could find it a new home if someone is looking and has a smaller tractor. I have replaced it with a Champion
Chipper that is built here in Pa. It can handle up to 6", has a hydraulic self feed and a heavy disc with 4 reversible blades. Very good machine, heavily built. My only complaint is that the anvil, that the blades shear against, is virtually impossible to see to adjust. Guess I just need to do a greater amount of disassembly to see what it is I need to see. With 35 HP this is a seriously agressive (sp) machine. Feed rate is adjustable, so If you want to feed it 6" logs all day it will do it. A friend uses it with her 30 hp Kubota - while the motor will do the job, the tractor is really too light a machine for the
chipper.
Shop for a USED machine. Craigslist, ebay, etc. I got the Champion for half of new cost, only slightly used. Thought about a motorized trailer type, but I already have the tractor, so I didn't want another engine to maintain.
The machine pictured in the original post is a compromise machine - it will work, but not seriously. I would use it to train those unfamiliar with such machines. It is relatively safe as far as chippers/shredders go.