The idea came to me at work one day and in two nights I had it built and a couple more to get the bike going. Bike is a stock tx50. The drive is a tank track assembly was made from scrap metal and a snowblower drive system. It is fully removable and required no modifications to the bike or swing arm. It pulls are and can climb up anything has a top speed of around 15mph. Has a derbi from farining and a the headlight form the same snowblower.