Re: Re: Re: PTO Chipper?

Posted by IHank on February 04, 2001 at 09:34:09 from (207.177.47.156):

In Reply to: Re: Re: PTO Chipper? posted by Kim Hartshorn on February 03, 2001 at 07:53:37:

Kim H. - I know nothing about bale choppers and hay grinders.

My Fox chopper has a 3 speed transmission that determines the feed apron speed and consequently the chip size coming outta the chopper.

The chopper head is a spool with a bunch of curved knives bolted onto it forming a cylinder. The knives are precision ground by an elaborate sharpening machine. The cutter "anvil" bar is adjusted to a small clearance from the rotating cutter spool so's to give a traditional shearing cut.

The hollow spool spins at a pretty good speed and provides a blower effect to move the chips out the back of the machine. There the chips go into a big paddle type blower and are sent up a long curved chute that deposits the chips where you want 'em. If not needed, the chips can simply fall out the back of the machine and form a pile on the ground, or whatever scheme to utilize 'em one has.

I only chop small stuff, under about 3" diameter. Anything bigger than that is good size for kindling wood and is cut with the chain saw.

As to any modifications needed... I don't see any. The cutter mechanism is constructed of very thick steel parts. Cutting, as compared to pulverizing, soft plant tissue requires sharp blades. Chopping brush don't require sharp blade, just more PTO shaft power if you don't have a good cutter head situation. I like to run the thing in the high speed feed rate to get a coarse cut and not end up with glorified sawdust. The whole idea here is to convert a bulky brush pile into compact a firewood pile that I can handle with a scoop shovel.

Hopefully somebody else will have more info. to share on this. IHank

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