My friend and I are working on a NBN robot to be used in one more competition. It uses a single flywheel, which the ball will roll over and out of the robot. Five motors with regular-speed internal gears drive the wheel, and the gear ratio is 0.4 (I’m not the best with gear ratios. Each motor drives a regular strength 30-tooth, and then the last motor in the train also driver a HS 60-tooth, which drives a 12-tooth attached to a regular strength 60-tooth, which driver a 12-tooth attached to the flywheel. Sorry for the poorly worded explanation, I don’t know how else to word it.)
What we want the most is to be able to shoot many balls off quickly into the high goal. Making full-court shots would be helpful, but it is more important to be able to shoot the balls quickly and accurately from a relatively short distance at this point. The problem we are running into is with compression. We are using plastic to press the balls up against the flywheel, and we can get it to either shoot the balls straight up with little momentum or almost straight forward with a decent amount of momentum. Either way, the ball isn’t going to make it into a high goal. We have tried adjusting the compression of the plastic, creating guides using standoffs, and making ramps using aluminum straps and steel plates, but nothing has worked effectively.
Any suggestions would be greatly appreciated. I’ve attached a
video of the robot in operation, as well as some pics of the flywheel. If any additional information is needed, I will do my best to provide it. Thanks in advance.