MitchJi wrote:It might be a good idea to make up a couple of cloth sacks filled with sand (use the legs from a worn out pair of pants) that each weigh about as much as one of your battery packs. Then try riding your bike with the sacks in tied in the different possible positions (you might want to pay attention to how subject the locations are to wheelies). This way you will be absolutely sure you are making the choice you prefer. This will be much easier than changing the mounting location later if it turns out to ride badly with your first choice.
I'm going to try the bike with the batteries as pictured and see how handling feels. Perhaps temporary mounting. Sandbags are not a bad idea, but I won't be able to pedal the bike up to the speeds and acceleration it will have when powered.
I *want* to make the batteries work in the main triangle. It's a good secure spot that keeps the bike as stock looking as possible, and requires the least battery containment building.