The FX6 & FX7 series is a larger version of the FX-4 and FX-5 thus allowing some design changes. The same strategy of the smaller models applies to the low center of gravity for safety and stability. The weeds are still compressed to put the weight toward the center of the boat. Engine, fuel and hydraulic tanks remain mounted low to the deck to keep the center of gravity low. However, the wider width of these models allows for a little rise in the center of gravity. Because visibility of the larger harvester is needed, the driving console is located above the storage hopper. The increased weight capacity requires more horsepower and larger paddle wheels. This builds up more momentum in the paddle wheels, therefore we now use heavy-duty gearboxes and a separate hydraulic motor to propel the paddle wheels. There is more room to walk on this larger size boat.