Hi together!
Here are some pictures from our sled project....(not finished yet)
It´s very simole: 4 sprockets, 2 chains, 4 wheels an da chassis...
The gear drive in the right side is to adjust the way of the weight box to the driven distanca. We made ist in 1/16 scale, so the distance to pull will be about 18-20 feet.
http://www.modelltruckforum.com/inde...agen#post98954
regards
Frank