gear ratios

[87concord]

what is the best way to tell the gear ratio of an alpha one gen 1 drive?? can i remove the top cap and count teeth and if so how many teeth make what ratios?

 

[2nd_chance_ii]

It should be stamped on the upper gearcase

 

[Bt Doctur]

drive gear driven gear
22 20 1.47(1.50)
24 24 1.62(1.65)
17 19 1.81(1.85)
20 24 1.94(1.98)