I love what Lego did with the EV3. The new brick power and functionality is fantastic, but I think the addition of the new elements and attachment interfaces will make for stronger, more consistent robots. Yes, I used the words ‘consistent’ and ‘robot’ in the same sentence.
New Chassis Pieces
Lego added two chassis pieces to the the set. This may not seem like a big deal until you join them with the new motor. The connection is very strong, which should create a robot that goes straighter and is more consistent. I know, I used a bad robot word.
Lego did add a new tread system to the EV3. Treads look cool and every boy wants to use them, but in my experience, only use treads for FLL if you don’t want a robot to go straight. They are great for climbing but the consistency trade off is not worth the gain. Neither of my teams nor I have tried out the new treads yet. The new system may work better, but I still have nightmares about treads.
I want the old wheels back. I am not a fan of the new fat tires. I have not tested or seen my teams test them but the bounce screams inconsistency. I am sure there is a reason for this fat tire design, I just don’t see it. Also, the bigger the wheels the faster the robot. There are no big wheels. To satisfy my team’s big wheel addiction, we added the Lego Motorcycle wheels to our kits.