RT Journal Article SR Electronic JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 80 OP 80 DO 10.48044/joa.1977.3.4.80 VO 3 IS 4 YR 1977 UL http://auf.isa-arbor.com/content/3/4/80.abstract AB Long, M.E. Chippers. Grounds Maintenance 11(11): 32, 34.Machines available for converting wood and brush into chips range all the way from huge, truckmounted units powered by 300-horsepower engines, and capable of gobbling logs up to 5 ft. in diameter, to small 5-horsepower units that can be pushed on their wheels to the job site. In selecting from all the available machines the one which will best meet your needs, there are many factors to keep in mind. As with any mechanical device, your chipper unit is ultimately going to need repair parts and service.