National Micro-Mini Tractor Pullers Association
The NMMTPA was founded in 1976 and is the main sanctioning
body of Micro-Mini Tractor Pulling in the United States and
Canada. Micro-Mini Tractors and Trucks originate from an ERTL
type tractor or Tonka type trucks which are then fitted with a model
airplane or car engine, driveline, and special pulling tires. There are
currently seven sanctioned NMMTPA classes; they are: 3lb.Pro Stock
Tractor, 5lb. Pro Stock Tractor, 2WD Road Vehicles, 5lb. Super
Stock Tractors, 4x4 Trucks, and 6lb.Unlimited Tractors and 7lb Semi.
Micro-Mini Tractor Pulling is a 1/16 scale version of full size tractor pulling. A weight transfer sled is pulled by these small "toy" pullers on a 2'x16' wooden track which is either covered with a formica surface or sealed with a smooth surface of polyurethane. Some of these pulling units in the 6 lb. open modified tractor class have been known to pull in excess of 600 lbs.