Working Steam Engine with Throttle and Reverse

I decided to take on the challenge of a reversing throttle lever as I thought it would be more fun than running over to the air compressor or moving tubes. Works well see videos! If you make it post up a pic! See the instructional video and operational video.

Update (11/9/15): If you want to use this engine to drive accessories print the power take off pulley and longer crankshaft. Mount the pulley so that its grove is further from the crankshaft so your rubberband clears the pennies on