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.

Prossimo episodio

S01E10 - Spinning a Lego Wheel FASTER