Fuel cell location

[Project Bike Truck]

I can't remember where I read it, but you basically want it as centered as possible. In a truck that usually just behind the cab, but in front of the rear axle. The driveshaft is a limiting factor, but set the cell just above that. This places that mass between the axles and as low (CG) as possible. Check out Frank ZX's F100.

I always had a thought to use 2 cells (1 on each side of the driveshaft under the bed/cab), but can't figure out how you would keep them balanced. Putting them outside of the frame like you suggested with #3 goes against mass centralization.

GREAT now I want to move my fuel cell and build a new one. thanks, guys!