98 



FARM MECHANICS 



instead of oratory. Tractor efficiency should be rated 

 practically instead of theoretically. The few actual 



Figure 113. Tractor Transmission Gear. Spur gears are the most 

 satisfactory for heavy work. 



reports of performance have emanated from tests with 

 new machines in the hands of trained demonstrators. 

 Manufacturers include belt power work among the 



