For the nxt having a fourth motor that is attached to the robot but is not plugged in acts as excellent counter weight to the motor that is plugged in. Result, your robot goes straight because it is more balanced.

On Oct 4, 2013 1:24 PM, "Emler, Paul" <[log in to unmask]> wrote:

This was my complaint earlier. If you have the EV3 you can build your robot with 4 motors already connected to the robot and programmed to be used. If you are using the NXT you can build your robot with 4 motors but would need to take the time to switch wires from one motor to the next.

From: First Lego League in Virginia and DC [mailto:[log in to unmask]] On Behalf Of Bdh612-ess
Sent: Friday, October 04, 2013 1:01 PM
To: [log in to unmask]
Subject: Re: [VADCFLL-L] Can we use 4 motors in FLL

There is no discussion in the rules on how motors are connected. Remember, if its not prohibited, it is allowed. Rule 4, bullet 5 says:

MOTORS - You are allowed a maximum of four MINDSTORMS motors in the competition area. Choose your favorite combination from among the LEGO-manufactured types shown here. No other motors are allowed.

Brian


Sent from my iPhone


On Oct 4, 2013, at 12:31 PM, Rahman Rasulzada <[log in to unmask]> wrote:

Ev3 has 4 port. So is ok we can use 4of them in FLL competition


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