Methods of shifting gears

[lukedude43]

thanks to everyone for all the information it's been incredibly helpful. Something that I didn't realize I left out is that this is a project to help me learn solidworks and because off that i'm gonna go with dog shifting just because of the easier design. Also if by some chance we actually made this instead of just buying some AM or VEX shifters, dog shifting would be easier for my team to do because they would be our first machined parts and it seems much easier to design than a ball shifter.