# What’s the v5 motor limit

I was just rewatching the NorCal wall bot, and i noticed that they have 10 motors, it even says at the end. Is that the new limit?

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Well VEXU is Unlimited but as far as I know it is 8 for MS and HS

There is a rule for that. Take a peak at < R17 > .

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The NorCal wall bot uses 8 motors, which is the current limit for MS and HS.

They used motor saving techniques like differentials to allow motors to be used for multiple purposes.

Edit: and ratchets

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thanks - just useful to connect implementation to topic. So end of video says 10 motors for a robot … VRC MS/HS the limit is 8 for V5.

Good teams will figure out how to make it work with the constraints. I like the proof of concept, allows for good questions to be asked.

This particular robot used a differential, which is why their list suggests they used 10 motors. They actually only used 8, just some motors performed multiple functions

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Norcal are good teams, which is why their robot worked within the constraints. They used motor sharing with a total of 8 motors.

When using v5 it is 8 motors without pneumatics and 6 motors with pneumatics. Rule R17 in Game Manual. https://content.vexrobotics.com/docs/vrc-tower-takeover/GameManual-20190816.pdf

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I was checking where the confusion was. The reveal listed 10 separate motors - maybe the meant functionality. It was was the source of ambiguity the way the information was presented on the video.

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The reveal did mention 10 motors,and at the same time I’m pretty sure I also saw 10 motors, I don’t think that they legitally meant to use it for competition.

I believe (and I could be very wrong), that they were using motor-sharing. You would by convention list the # of motors for each function, and sometimes if two functions are achieved by one motor, you can end up with a result where it appears that you have more than 8 functional motors, when in reality they are being shared. If this is something that interests you, there’s a lot of posts already on the forums on how you can achieve this.

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@CarCar No, there are 8 motors, and while they did not use the robot for competition, they most certainly could have.

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