I decided to begin this build after my original DIY single motor esk8 was run over by a University bus (the driver didn’t even stop after cutting a corner, nearly running me over, and totaling my longboard!)
This build has cost me around $1000 total. I started with a Landyatchz Switchblade 38" deck, paired with the TB 218mm trucks and 97mm wheels, after that, everything else is custom on this board. I top mounted the deck with spacers I designed and 3d printed to prevent wheel bite and to provide clearance for the battery. Next I designed up a dual motor mount to be cut out of a 3mm carbon fiber plate, and with a quick run on the CNC, I had the parts for my motor mount. This mount design can be rotated to be underneath, or rotated backwards in a reverse mount configuration as I used.
Long board after meeting the underside of a bus.
Dual mount assembly: