I am planning on doing a cata that is a 11 watt 100 rpm motor, driving a 36 tooth slip gear. It would drive a 84 tooth gear. Last year when my team did a cata we could never have it stay down. it would always immediately be pulled back. how do I make the cata stay down, and not just snap back into place?
Have you heard of ratchets? Not being condescending, geniuniely curious.
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Set motor to “hold” in code
Assuming the OP wants to use rubber bands on his catapult, setting the motor to hold won’t do much on a direct slipgear. Ratchets are the way to go. There are lots of examples of cata ratchets on the vex forum or on YouTube. I hope you find what you need!
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This will either do nothing or result in a burned out motor after a minute or two. You need a ratchet.
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Yes I have seen other teams use them. I need to research that more. I have been busy researching other parts of the robot. Thanks
No problem, good luck! If you need any help with it let me know.
it depends on the gearing and the tension of the rubberbands. our cata gets gets warm without a ratchet, but it still runs well after a few minutes.
Regardless of whether it works or not, ratchets are still the way to go.
as @Smashmallow say using ratchets is the way to go.
In a few words a ratchet blocks the direction of the gears. In this case the ratchet blocks the cata mecanism in one direction, so the cata will stay down because it cant going up.
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