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Unread 10-01-2005, 16:39
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Re: Transmission gear ratio
The transmission is a 12.75 : 1 gear ratio, the sprockets are a 28:21 gear ratio, this combines for a 17:1 gear ratio.

The Guidelines document has a lot more info on the transmissions and motors you may find useful. Look for it around pages 7, 8, and 9.
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Unread 10-01-2005, 19:21
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Re: Transmission gear ratio
It is exactly (50/14)*(50/14), or 625/49 which approx. equals 12.7551:1.

This is in the kit transmission manual located here. Right click on "FIRST 2005 Transmission Manual -RevA" and select "save target as".

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Unread 10-01-2005, 21:59
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Re: Transmission gear ratio
thanks guys..does anyone know the size of the gear box witht eh motors attached??
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Unread 13-01-2005, 09:31
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Re: Transmission gear ratio
big and heavy
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Unread 13-01-2005, 10:32
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Re: Transmission gear ratio
These are just estimates, but probably 4.5"-5" depth on the gearbox and 5-7lbs.
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