Bobsled weight limitations are as follows: Two-man: 384 pounds (170 kilograms) empty, 860 pounds (390 kilograms) with crew and equipment. Four-man: 480 pounds (220 kilograms) empty, 990 pounds (450 kilograms) with crew and equipment. As you can see, the weight of a bobsled does not change much when used or empty. This means that it is very difficult to tell how heavy it is without actually weighing it. According to some sources, a bobsled weighs between 1750 and 1900 pounds (770 and 800 kg). But most likely it is heavier than that! Interestingly, a bobsled weighs less when loaded with passengers and cargo. That's because there's less air pressure pushing down on the bobsled when it's full. So, less force is required to push it down the hill. Also, a bobsled weighs more when it's cold. That makes sense because ice is heavy. And the colder it is, the heavier ice becomes. In fact, ice cubes melt at a constant rate if weighed once a week for four weeks. The weight remains the same until they start to freeze again. After the fourth week of freezing and thawing, the ice would be heavier than before.