I'm shocked at how great it runs. I had no idea what I was doing. Like I said, Joe was a big help giving me pointers. It runs super smooth. I put a modified 308 motor in the center about 2 inches from the rail at the 50. I found that the trick was to reduce the counter weight in the motor and to tape it down to reduce wobble. Lucky 1st try. I am super happy with it!!!
I'll post a video of guys running on it later if I can figure out how.