Just did my first build with Golden Eagle Kit. I have a Tananka 33cc engine. When going 30mph I would like to be able to pedal assist to go faster but my bike is not geared so I can pedal that fast. Is there a extra large crankset that I can install on my Nishiki Tamarack Bike? It may sound funny but I would like to be able to pedal at cruising speed to have a little workout and go faster.