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Unread 21-11-2013, 10:46
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FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks)
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Re: Gearbox AFTER Transmission?

I don't understand what you're referring to when you say gearboxes or transmission. The shifting transmissions are gearboxes. For the SuperShifter and Sonic Shifter, you just need to input a CIM and the output can be geared such that the box can direct drive 6 or 8 inch wheels comfortably.

In addition to the shifting reduction, AM shifter gearboxes include a reduction before and after the shifting stage to further slow the CIM.

The AM Shifter only has two reductions as the final reduction is meant to be in the sprockets connecting the wheels to the gearbox output. This is easier to tune than a direct drive system.

Edit: just reread your post, I think I get your question. No, AM Planetaries are not required for typical FRC applications. They are listed on the product page because they have the same output features as a CIM and some teams may want to do something weird like using 1 CIM + 1 550 with planetary instead of two CIMs
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Last edited by Chris is me : 21-11-2013 at 10:50.