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| Articles > Tractor-specific articles | |
 The Big Book of Farm Tractors |
Roll-O-MaticIntroduced in 1947, the John Deere Roll-O-Matic system offered a smoother ride than a traditional narrow front end. It is similar to a semi-independent front suspension. When one wheel hit a bump, a gear would force the other wheel down, keeping it in contact with the ground. This would prevent the tractor from hopping, as would occur on a typical tricycle-front tractor. |
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