Going Gas Powered

Well, here goes. Taking the tank apart, pulling the electric motors, and swapping in a gas engine with a idler engaged pulley style transmission.  I’m tired of the 1hp from the electric motors, and not being able to have the tank really drive anywhere fun. Will probably go with a 3 to 6 hp engine in the back, and transmission in the front.

topOff

Here’s the basic plan for the transmission.  The motor spins 2 shafts in opposite directions.  Each has a pully on each side, which can be engaged with an idler, giving the 4 options:  Left Forward, Left Reverse, Right Forward, Right Reverse.
TransmissionPlan

To turn the 2 shafts in opposite directions, the current plan is to have the chain wrap around a sprocket on each shaft, and an idler to give the proper clearance.
CounterDriveSmall
The other option is to drive one shaft with the motor, and have it drive the other shaft in reverse via cogs/gears.  But I’m leaning toward the chain method.

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