Hart-Parr 40

The Hart-Parr 40 is a standard-tread farm tractor produced from 1923 to 1927 by Hart-Parr in Charles City, Iowa, USA. It features a 10.1L 4-cylinder gasoline engine built from two two-cylinder blocks on a single crankshaft, with early models having two carburetors and later models a single carburetor. The tractor has a 2-speed gear transmission with mechanical contracting band clutch, two-wheel drive, and manual steering with an open operator station. It delivers a claimed 22 hp at the drawbar and 40 hp at the belt, with tested power outputs higher. The tractor weighs 7500 lbs and rides on steel tires sized 28x5 front and 52x13 rear. The original price was $2,250 in 1927.