April 2012
Intermediate to advanced
176 pages
7h 53m
English
My Own DIY Gravity Balancer

A jack is easier to carry than a 600-pound counterweight.
François Grellet
I’M GETTING OLDER, AND IT’S BECOME difficult for me to work on my steep lawn (a 30° slope). I looked for something to continuously pull me up wherever I move or stop, but I didn’t find anything to buy on the market. So I decided to make my own device, using two pneumatic jacks that tighten a rope across a series of pulleys. As a Swiss engineer once suggested to me. A jack is easier to carry than a 600-pound counterweight, isn’t it?
I started my DIY project with an air compressor reservoir, upon which I attached a frame ...