I have 2018 Rad Wagon Cargo 26”x2.30”tires. I only run 48 volts right now! I have the Samsung 35E cells. I upgraded to 21700 cells Samsung cells! I upgraded to controller 35amp modified the shunt diy version! Fully programmable color screen! 1600 watt peak power for 48 volts! I want to upgrade the hub motor convert the factory direct drive hub too small. The QS 205 6T Hub Motor paired with the Sabvoton 150-200 amp! 72volts 40amp battery. Up grade the
forks the 120mm suspension forks and hydraulic 4 piston brakes a must! The Geared Hubs have plastic planet gears and bearings failures! Bottom line Direct drives bikes are more efficient! Saving you money on wear and tear parts! Regenerative or Dynamic Braking too! Thank you for sharing this info. Keep on building!