On the Higher end Drift Trike's that use Electric Motor Hub Front wheel $$
They Make a Battery box under the frame ( Under Your wagon ).
You need Your Motor, Battery(s) and wiring set up first, as well as Your Pedal wheel and fork.
Rear axle, Sprocket, hangers and bearings. Now you can build the frame to fit the battery(s), motor and fork/wheel height.
Building a cage to hold the battery(s).
They Make a Battery box under the frame ( Under Your wagon ).
You need Your Motor, Battery(s) and wiring set up first, as well as Your Pedal wheel and fork.
Rear axle, Sprocket, hangers and bearings. Now you can build the frame to fit the battery(s), motor and fork/wheel height.
Building a cage to hold the battery(s).