Windup Motor : Airplanes Boats .

Windup Motor for Airplanes, Boats, or Zeppelins, Base Size 1-3/8" x total length 4" with Shaft, Height with Windup 1-3/4"  With no resistance the motor once wound tight runs for approximately 3-4 seconds.  The wind shaft is 1-3/4" in total length.  1" to the casement of the motor.