First Things

By Staff
Published on March 1, 1992
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D. The POP-skip-POP-skip sounds a little more even on full throttle and full load, but the vibration is serious. The moving mass of both pistons and both rods together is difficult to counter-balance.
D. The POP-skip-POP-skip sounds a little more even on full throttle and full load, but the vibration is serious. The moving mass of both pistons and both rods together is difficult to counter-balance.
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D. With the pistons moving in opposite directions, they help balance each other, hence, less vibration.
D. With the pistons moving in opposite directions, they help balance each other, hence, less vibration.

1102 Peach Street, Abilene, TX 79602

POP-POP-skip-skip is the distinctive sound of some two-cylinder
tractors. My Callahan County, Texas neighbor got rid of a really
clean two-cylinder tractor because he said it was missing.

Louis Miller says his 360 degree crank two-cylinder tractor
vibrates real badly.

E. Some of the two-cylinder tractors that used 180 degree
cranks were Hart-Parr, Rumely Oil-Pull, and John Deere
Poppin’Johnny

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