Re: Dog gears for modular attachments
My older boys are also using the "wide dog gears", to power their "extra skin" (a tall robot chassis that drives over the Demo/building). Originally they tried using four point "cross" as a gear, but that was causing problems, so I suggested that there are other types of gears, they tried several different types and settled on those.
Legolympians - 2009-2015 (retired - joined FRC team 5422 Stormgears)
Legolicious - 5th year girls team
Brick Force - 2nd year boys team
2015 - Mass FLL coach of the year.