2013 Vermeer, BC1800XL Tier 4i (Stage IIIB) Chippers / Shredders, Tackle wood waste measuring up to 19 inches / 48.3 centimeters with the powerful BC1800XL. Three Tier 4i (stage IIIB) engine options ranging from 115 horsepower / 85.8 kilowatts to 173 horsepower / 129 kilowatts allows you to select your ideal level of power. Patented SmartFeed control system monitors engine performance, and then either reverses or stops the vertical feed rollers as needed. Add on an optional winch with 150 feet / 45.7 meter line to move logs up to 2,000 pounds / 907 kilograms onto the feed table.