Pictures of a US Pro Drive Kit (without motor)

Warning - 10 inline images all at just over 200k each, size 1280 X 960

It's gearing ratio it is as follows

• Motor goes through a planetary gearbox at 4.75:1 ratio
• Other side of gearbox has a 19 tooth cog (of course the motor spins faster than small cog)
• Small pitched chain runs to a 54 tooth cog that connect directly to the cycle wheel.

With the unit plugged in and switched on it draws 220ma at idle. (no motor activity)

With the motor off the drive unit it draws 1.3A - 1.5A with no load and at full speed.

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