We have, as part of our olive operation, a 3 point linkage, PTO driven chipper from our friends in China.
It has a 6inch feed chute, copes really easily with olive trunks and branches up to that diameter.
It struggles with palm fronds - mainly because of the fibrous natire of the entire thing. The "stalk" is densely fibrous, but even the fronds are just narrower fibrous bastards!
Only solution we've come up with is to feed a couple of smallish, solid branches into the maw after each couple of palm fronds. Seems to clear the crap out of the cutting area and avoids clogging of the "feed out" chute.
Dunno how that will work with a smaller unit, though!
Really good luck with the fronds - IF the fronds get too numerous, we shove them onto a burn pile and hit them with a match. (works out in the boonies - not so much in the cities!)
