Hey castlebravo-racer, I just watched a video from an earlier post of your track, nice job. Do you recall how much dirt you had to haul in and how many linear feet of pipe you had to use? It looks like a pretty fair sized track and I was wondering how much raw materials I would need to make a track of comparable size. I've been lucky enough to be given lengths of both 4" and 6" drain pipe. Which would you use where? ie-straights or corners or jumps, etc.