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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