Usually the object is secured to some chain and hoisted towards the nearby desired location. The peak is tested by straddling the bike with each of your feet on the land and lifting the front tire up. In the year 2011 there are 8 weight classes for men and 7 weight classes for Ladies. http://Durfee.mycrestron.com:3000/hcmkristie7442/topone-chain6099/wiki/How-To-Obtain-An-Electric-Chain-Hoist