Peterson introduces a new drum chipper model suited for high volume biomass producers. Click here to see it in action. Click here if YouTube is not accessible. The 4300 model is powered by a C18 Caterpillar engine available in three power ratings, 630 HP, 700 HP and 765 HP. The chipper utilizes a 36 inch (914 mm) diameter by 40 inch (102 mm) wide drum. It will be available with optional material sizing bars and a chip accelerator to minimize oversize twigs and branches in the chips. Other key features include a sloped feed deck for ease of feeding the chipper, and an adaptive feed control to maintain chip quality and engine RPM. Production 4300 drum chippers are now available.