CENTRAL OHIO ANTIQUE TRACTOR PULLERS ASSOCIATION
DIV 3 RULES 2001 (updated 01/28/01)
CLASSES
3500,4000,4500,5000,5500,6000,6500
AGE OF DRIVER
Drivers must be 14 years of age or older. Those under 18 years of age must have written parental/guardian permission.
AGE OF TRACTOR
1957 and older
DRAW BARS
Draw bars must not exceed 20 inches in height or less than 18 inches from center of axle to hooking point. No part of draw bar may extend rearward beyond point of hook. Draw bars must be stationary in all directions. No clevis
WEIGHTS
Weights must not extend rearward beyond rear tires and cannot be more than 11 feet from the center of the rear axle to the furthest point forward. No more then 12" from side of rear tire.
TIRES
No radial tires, steel wheels, duels. Two-wheel drive only. Any cut allowed on tires. Manufactured data must be intact. Tire size will be 15.5x38 or 14.9x38. Maximum footprint per Firestone tire chart D170, 200 sq. in. Any rim width.
FUEL
Gas, diesel or LP fuels only. No alcohol or nitrous oxide fuels may be used in tractors. Gas is allowed a maximum of 750 specific gravity. All tractors are subject to random fuel checks. Tractors manufactured to use diesel fuel only cannot be converted to gas or LP.
RPM’S
Rpm’s allowed will be determined by the Nebraska test chart. Any tractor not listed will use manufacturer’s data. A 10% margin of error will be permitted. All tractors to have positive throttle stops.
SPEED LIMIT
Any gear, speed limit, 3.5 mph, to be checked by radar. No shifting of TA’s.
CARBURETORS
Replacement carburetors with no modification of carburetor or manifold. Overhang of carburetor to manifold is not allowed. Only stock appearing manifolds are allowed. Tractors must be naturally aspirated. No turbos or blowers - except Oliver 99GM, etc. Enhanced electrical systems permitted in all classes. No rev limitors
ENGINE , FRAMES , TRANSMISSION , REAR END , AXLE
Tractors must have the stock engine, frames, transmission, rear end and axle housings or manufacturer’s replacement.Stockheads and their replacements are to remain unchanged in outside appearance. No (7) main blocks in Olivers; no (12) port heads ; no (99) heads. AC - WC/WD/WD45 can use D-17 engine; IH - H, 350; M , 450. JD - A/B/G can use power blocks. No M-M (800) heads or blocks. Dual exhaust not allowed except after stock manifold.
OTHER RESTRICTIONS
Oliver 88, Farmall M, Massey 44, MM-U, JD-G, Case-C/D, JD-A 1940 and up and like size tractors are not allowed in classes below 4500#. Massey 33, Oliver 77, JD-A 1939 and down and like size tractors are not allowed in classes below 4000#.
At Dekalb and Ohio Sate Fair Pulls, 7500, and 8500 classes can run up to 18.4 x 38 tires
ALL COATPA GENERAL RULES APPLY
PAUL FANKHAUSER 419-284-3876 1-3-2000
Chairman: Craig Shaw