POWER TRANSMISSION ELEMENTS AND MECHANISMS 173 



1,000 

 900 

 800 

 700 



600 

 500 



400 



300 

 250 



200 



50 



40 



30 

 25 



20 

 15 



10 



FLAT -BELT HORSEPOWER CHARTS 



Determining Arc of Contact for Open Belts 



Angle « in Degrees 

 5 7 10 



20 



50 



40 45 



178 



170 160 150 



Arc of Contact, 0, in Degrees^ For Open Belts 



140 130 120 no 100 90 



