5/7/2023 0 Comments Ih tractor pulls![]() ![]() There is no RPM limit on this class, which for many is the next step up from Super Farm in the world of tractor pulling. The Under 401 Prostock class is again based on a farm tractor using the original engine it’s limited to one turbo charger and a engine size of 401 cubic inches (6.57 litres). This is a low cost class and a starting class for many tractor pulling competitors. The original tractor engine must be used. The Super Farm class is based on a stock farm tractor and is limited to one turbo charger and a RPM limit of 2800. The weight of each class is the weight of the machine and driver ready to compete. Here is a brief description of the classes which are competed at events with the North West Tractor Pulling Club. However, the sport has many varied classes ranging from the small, single engined 950kg Modifieds, through the stock machines to the multi-engined 4.5 tonne machines. Tractor pulling is called “The World’s Most Powerful Motor Sport” with some machines producing in excess of 9000 horsepower. If more than one competitor completes the 100 metre track with the sledge (a full pull), then the sledge is made harder to pull, and the competitors who made a full pull go again until they are stopped and a winner obtained. ![]() The winner of the competition is the machine that can pull the sledge the furthest. This is achieved by increasing the weight on the pan of the sledge by moving the weight box from the rear to the front of the sledge as the sledge is pulled forward. ![]() A weight transfer sledge basically gets heavier to pull as it is pulled down the track. Tractor pulling competitions take place on a 100 metre track, and involve the machines pulling a weight transfer sledge. ![]()
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