Ballasted drive wheel for tractor - has heavy ballast particles mixed with fine plastics-granular bed

摘要

The drive wheel of the tractor is filled with a mixture of granular ballast and a finer plastics mixture, and with some amount of compressed air. No separate inner tube is required nor any expensive additives such as anti-freeze. The ballast provides an even loading of the wheel with improved stability, and with the loading chosen by the amount of granular ballast. The granular ballast can be gravel while the plastic powder is lighter than water to spread the loading. The addition of compressed air provides some degree of comfort while preventing tyre damage when running over sharp edges.