Any advice for how to build a motor indexer?

I’m rebuilding my robot from a piston indexer to a motor indexer using flex wheels to push the discs in. Is there anything I should know before I do it?

You need to add tension on the discs so they’ll index properly if the discs are going to be sitting on the flexwheels. Basically, you just need to create something that will compress the disc onto the flex wheel, think of it like a vertical flywheel.

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