I would be interested in learning how you decided on that particular motor for this build. I remember that you said that "BAT" used a 1 hp Scott motor in his. How does the Briggs & Stratton motor compare to this and what other choices are available?
I imagine that there is a balance between the power output and energy consumption so that you can maximize speed without draining the battery too quickly. Have there been any studies made on various motors to find out which are the most efficient?