We had a huge problem with the weight of our robot a few years ago. Maybe you remember: Our robot drove weird turns and we lost the knock out match. Take a look (start at time index 6:40):
Maybe you have noticed in our latest post: We upgraded our robot. As I mention last week we have a problem with our motor and the weight. Now we found a solution: We use two ball bearing to support the motor. Second we extend the axe of the motor because it was too short to reach the wheel. With this method we hopefully fix this problem.