Finished weight is 4lbs 1oz and did not need tail weight. I had to put the battery between the engine and the fuel tank because the increased wing sweep and foam filling made it tail heavy.The engine was originally a 60L FIRE and weights 13.5oz.(ABC version).Speed was measured by time over distance.Average of 3 passes was 1.05 seconds which calculates to 194.805 MPH.Of course this not completely accurate,but it's a good starting point.I do'nt have any still pictures,but I'll post a video as soon as I can.