Why are helical gears not common in vex?

why do we not use helical gears for vex robotics. should we ask vex robotics to start selling and making helical gears for teams to use?


I am pretty sure vex does sell bevel gears, which can be used similarly. because of the design they are pretty weak and therefor not commonly used. I am not 100% tho that’s just what I’ve heard from other teams. Helical gears would be super useful especially for over under early season for a slapper on a lift, for keeping gearing compact.