[Chriszuma]

I had brought this up with my team, but it's not actually a problem and here is why: It is highly unlikely that you decide to use a material for the spinning wheel that is of enough mass to create a noticeable gyroscopic effect. Yes, a horizontal spinner would eliminate this issue, but they are not as good. The only problem i forsee with gyscopicness would be making sure your mounting brackets are reinforced; it won't have enough torque to tip the robot, but it will definitely be pushing against the mounting brackets.