About Us

.: motor & transmission coupler


    I'm not a believer in directly mounting the motor to the transmission so I made a hub that uses a RAM spring damper/coupler.
    The reason I use a damper is my concern that minor motor pulsations would resonate throughout the car and distract from the effortless torque of an electric motor.
    I was going to buy a hub and then make the coupler that would bolt to the hub, but at $350 for the hub, I decided to just make it one piece. It was a large chuck of steel (6 1/2" diameter x 6") but worked well. 

    Other than the hub, all the parts are from a RAM clutch disk that I bought on ebay for $25.00.     Here's the drawing of the hub.

    This is a detail of the slots for the spring dampers.