(...) Bad form to reply to myself twice in the same thread, but I've figured out a solution. Wish it were a bit smaller, but that's life with limited gear geometries... --Bram (20 years ago, 29-May-05, to lugnet.technic)
(...) (URL) (Click for the LDraw file) The green bricks have axle holes with a stationary 12x axle running through. The drive input is to the z16 clutch gear at the top. The yellow and blue sections rotate in opposite directions at the same speed. (...) (20 years ago, 29-May-05, to lugnet.technic, FTX)
