Engine 20 Teeth.    Clutch 44 Teeth. Back Wheel 55T.   
 CLOSE RATIOS. KTT.        
   Top. Mid.   Bottom.    
19  6.37 9.4  12.1   The gears in the gearbox have: 
20  6.05 8.75  11.48     
21  5.77  8.35  10.67  Sleeve Gear  19T
22  5.55  7.95  10.4  Layshaft  25, 22, 18T
23  5.25  7.6  9.94  Low Gear  25T
24 5.05 7.3 9.5 Middle Gear 22T
25 4.85 7.0      
K. STANDARD RATIOS.      
  Top. Mid. Bottom.    
19 6.37 9.4 16.1 The Gears in the gearbox have
20 6.05 8.75 15.3    
21 5.77 8.35 14.6 Sleeve Gear 18T.
22 5.55 7.95 13.9 Low Gear 28T.
23 5.25 7.6 13.3 Layshaft 26-22-16T.
24 5.05 7.3 12.75 Middle Gear 22T
25 4.85 7.0 12.1    
           

Chain 1/2" pitch x .305 wide.

Front Chain has 74 links.

Rear Chain has 120 links with 23 Teeth sprocket.