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Originally Posted by Andy Baker
Look inside of the Bosch gearbox from last year (or previous years), and you will find all of the gears you need to build your very own single-stage reduction gearbox. The ring gears, planet gears, and pin-plate that holds the planet gears are all in there. Unfortuneately, the sun gear (pinion) has a larger id (5mm), as the Bosch shaft was bigger than the F-P motor shaft.
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We utilized the same Bosch planetary last year by creating an adapter shaft with an interference fit and pressing it onto the FP. Although we used the whole transmission so most people at first glance thought we had 4 drill motors on our bot.
On the other hand this year we prefered a more direct mode to send the FP power into our transmission. I think many of you will enjoy the simplicity of how we use them this year...
Pete