Lego Motor Lifts a Rock (88kg/195lb)

Some of you wanted to see Lego motor lifting an actual weight instead of a meter. Here you have it. 88 kg of granite is lifted to a height of 20 cm. It took 21 minutes. :) Compared to the 220 kg machine, some changes were needed to increase the lifting distance: -String collection around the axles was widened from 1 to 2 Lego units. -Bushes used for strengthening the axles were replaced with Technic Reel 3 x 2 (32012). -Gear ratio was increased from 75:1 to 135:1 to compensate the increase in diameter (and therefore loss of tension) when a lot of string is wound around the reels. This also means that the reels or axles may break if put to maximum load when the reels are empty.