I have seen some "used and abused" small decks with a gearbox on them I could get for next to nothing. Don't know about the rpm requirements for those, though. Just seems a sickle would work much better.
</font><font color="blue" class="small">( Do a search in the build it yourself forum for "boom mower". This isn't the one I was thinking of, but gives a good idea. If you attach the boom to the mower directly over the top of the motor, you could pick up the whole thing probably.
You certainly could build one PTO driven, but by the time you purchased 1 or 2 gearboxes and drivelines, you'd have some serious money invested, plus the time to set it up just right.
I think you could build a boom mower hanging a $50-100 gas operated mower out there and control it with the 3PH and a boom.
If I only had a pond..................................
Years ago, one of my uncles had a 3 acre yard that he cut with a small JD riding mower. He got the idea to buy a cheap push mower and using the handle from it, fabbed that into a tow hitch. He welded a rod to the rear of the JD, dropped the towed mower into that hitch, and increased his width by about 30%. It was SLICK mowing around all his huge trees. First lap around it with the push mower next to the tree. This left a narrow strip between the JD and the pusher. 2nd lap with the towed mower picking up the strip, with the JD farther out--In two trips around the tree, you had a 6ft clearance from it!
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