Belt drive system for sliding vehicle door

A powered drive system for a sliding vehicle door comprising:

• an electric motor;
• a first pulley driven by said electric motor;
• a second pulley drivable along a guide track comprising a curved track portion;
• and
• a drive belt between said first pulley and said second pulley to transmit torque from said first pulley to said second pulley, said drive belt at least partially twisting only as said second pulley traverses said curved track portion.

A powered drive system for a sliding vehicle door comprising:

• an electric motor;
• a first pulley driven by said electric motor;
• a second pulley drivable along a guide track comprising a curved track portion;
• and
• a drive mechanism between said first pulley and said second pulley to transmit torque from said first pulley to said second pulley, said drive mechanism at least partially twisting only as said second pulley pivots to traverse said curved track portion, said drive mechanism includes a drive belt wherein said first pulley, said second pulley and said drive belt are driven within a common plane, said drive belt twisting out of said common plane in response to said second pulley traversing said curved track portion.