I can understand the desire to have a big starter.

However, IN MY EXPERIENCE, gas engines with eletronic ignition are very easy to start if set up properly. Our 40, 50, 80, and 100cc engines will start with a few lazy flips of the prop if: 1) fuel is in the carb, 2) engine is not flooded, 3) spark plug is in good condition, and 4) ignition is turned on.