With a 1in shaft and 3 pillow blocks and a 3/4in round steel plate I'd make a heavy duty wood
chipper. Third pillow goes in center, wouldn't want this deadly contraption to let go.
At 2 places on opposite side of the plate I'd cut out a neat 2in by 4in hole. There I would weld backup pieces for a base for bolting hardened steel knives available everywhere. Drill hole in center and weld on plate dead square to shaft.
Add a shute and your all set.
Wood chippers will be the thing to get in the future when slash burning will be outlawed all togeather, even for farmers.
Youd have to gear the trans down with an extrnal 1 to 3 (maybe 5) chain drive and sprocket system floating in an oil bath. The gearing down would ease the work on the engine and you'd get the ability to heave in larger stumps in the tradeoff.
Cost pillows 10$, shaft 20$, plate cut at machine shop 40$, with square holes cut and shaft hole 60$. Chain drive at scrap yard from motorcycle, few dollars.
Pretty cheap system. You may want to up to a larger rad for stationary work, oh yeah, no place for kids. /forums/images/graemlins/smile.gif