There are gear trains on some computers, on the bottom plate of the variator, for certain types of meters. The gearbox in the pic is for a Wayne 60-70 meter/computer setup.Not only is it offset from the computer input shaft but it reduces the input by 1/2.
Some are there only to align the input shaft of the computer to the output shaft of the meter.
Some , like ALL BENNETTS, reduce the output of the meter by 1/2.....a Bennett Meter turns at 8 revs per gallon, a computer turns at 4 revs per gallon.
If you hook a Bennett meter straight to the computer it will read 10 gallons on the computer but only will have delivered 5 gallons.
So, if you have a 40 rpm motor and hook it up to a Wayne or Bennett gear box you are reducing it to 20 rpm.
The Tokheim gear train is not for reduction but location.
But gears on the input of your computer means more friction and more wear to your motor.
A METER has so much torque it could break any gear in the computer. If its own gears don't break first
If you use a wimpy motor you will regret it.
By no means was I refering to doing something like this.