Thread: VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products
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Unread 21-12-2012, 01:12
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Re: VEX Robotics Relaunches VEXpro Product Line with over 120 New & Improved Products
Quote:
Originally Posted by topgun View Post
What gear ring ratio do you recommend for the mounting the 775 into the VersaPlanetary gearbox with the intention of mating it into a gearbox with two CIM motors? The CIMs are rated at 5300 rpm no load rpm. The 775 18V are rated at 19600 no load rpms. The resutling ratio is 3.679. Do we go with a 3:1 gear ring or a 4:1 gear ring?

Really love the concept of not pressing on a pinion gear. That is the most stressful part of building the robot because one small slip and you are out 5 or more days waiting for a shipment of a new motor. Also, anything to make it easier for teams without a lot of equipment to use.

Thanks.
The pinion thing is an annoying issue, but having an $30 Arbor Press + a few extra motors makes the process go a little smoother.

Also I asked this before but it seemed to have gotten buried, do you have any load tests on the VersaPlanetary? I know BB rates theirs at 35 ft-lbs.
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