Age of driver: Age of driver must be of age that will enable them to operate the tractor in a safe and proper manner. Those under 18 years of age MUST have a parent/guardian insurance waiver, good for the season, on file with OSATPA

This Division is designed for competitive pullers with near stock tractors.

Classes: 3500, 4000, 4500, 5000, 5500, 6000, 6500, 7500#

Tires: 15.5 x 38 maximum in all weight classes under 5000 pounds. 16.9x34 maximum in weight classes 5000 pounds and higher. No larger than 229 sq. in. Tires (2016); TOP CUT TIRES ALLOWED. NO RADIALS. NO DUALS. NO STEEL WHEELS.

Rim Size: Any width rim allowed. Pressed steel wheels are allowed front and rear. No chrome or aluminum wheels allowed.

Speed: Any gear, not to exceed 3 MPH. Speed checked by radar. No shifting of TA’s.

Weights: Suitcase weights and custom made weight brackets are permitted. Front end weight bracket and weights not to extend further than 11 feet from the center of the rear axle. Back weights may not extend past the rear wheels. Stops on the ends of the weight brackets no closer than 4 inches to the rear wheel. All weights to be secured to tractor using 1 inch ratchet type fasteners, pinned, or bolted.

Engine: Tractor engine must be stock or engine must be from original manufacturer and bolt in without modification using existing bell housing and motor mounts. Must be naturally aspirated. Exceptions: Oliver 99 GM, etc. Frames, transmission, rear end, and axle housings must be original or manufacturer replacement. Dual exhaust not allowed except after stock manifold. Electronic ignitions will be legal.

RPM’s: 10% margin of error will be permitted.

Draw Bars : Draw bars must not exceed 18 inches in height or be less than 18 inches from the center of the rear axle. Draw bar must be 3/4 inch material but not thicker than 1 1/4 inches. Draw bar must have a 3 inch hole with 1 inch of material thickness around the hole or can be a straight or twisted clevis with a minimum of a 2 1/2 inch hole. CLEVIS MUST BE BOLTED SECURELY TO DRAWBAR. NO FLOATING CLEVIS ALLOWED.

Appearance: Tractors should maintain original stock appearance. If a part is not found in the manufacturer’s parts book, it cannot be used with the exception of weight brackets, hang on weights, wheels, rims, hubs, draw bar, muffler, and air cleaner. Battery boxes may be moved from stock mounting location. Homemade side shields will not be allowed. Exception: factory side shields such as on Olivers. (March 2015) Any seat subject to safety standards. Alternators allowed.

Sponsor: Advertising plaques or signs 144 sq. inches maximum may be put on tractor as long as it does not interfere with teching of tractor.

Starting with 2015 season, aluminum front wheels will be allowed in Division 2. (March 2015)

Starting with 2015 season, side shields will be allowed in Division 2. Side shields must be easily removable to allow tractor to be tech’d. (March 2015)

PROPOSED: Starting with 2017 season, fuel cells will be allowed in lieu of factory located fuel tank.