I have used a Woods 5000 chipper / shredder on a B6100E sucessfully. Have to slip the clutch to bring the rotor up to speed and watch the size of what I feed. I don't plan to continue this for long, looking at a L3130 now for this and other tasks.
My bx22 work shop manual. Says that, The bx series equipped with hydrolic independent pto clutch. [ wet multi-plates type]
The clutch piston is actuated by hydrolic oil flow from the power steering controller. Do some other modles of tractors have a foot clutch similar to an automobile. Is this more effective. It it ok to slowly engage the clutch of the bx and let it slip until the flywheel gets up enough speed ? David.
Heck. I can't just slam my Troy Bilt chipper into "run" mode without slipping the belt a bit to start. Otherwise, it'll stall the engine. Can pretty much engage the Gravely PTO normally with the MacKissic shredder on it. Think the MacKissic is a little lighter weight because it doesn't have a chipper blade, only a hammer assembly similar to the one on the Troy Bilt.
I'd say the advice by others is pretty good, that you have to engage slowly to get the assembly rotating. After that, it depends on how big a piece of wood you put into the machine as to whether it'll chip it. Eight hp is good for up to about a inch if green and not too brittle. If rotted, you can chunk in a 2 or 3" piece of wood with 8 hp.
Country Home Products has a PTO powered chipper in their DR line which weighs a total of only 185 lb. Though its rated for a min. of 19 PTO HP, it's difficult to believe it could require that much because it seems that the flywheel can't be all that heavy when the entire thing is only 185 lb. I wonder whether the manufacturer is being overly cautious on the specs. Has anyone tried this chipper on a low HP tractor?