918d series fixed ratio 25mm diameter spur geared motors mfa 918d1511 single ratio metal gearbox with 151 gear ratio and 15 to 3v voltage rating suitable for a host of model and light industrial applications these gearboxes are constructed from steel and brass and housed in a protective plastic cover which prevents ingress of dust and dirt and protects the user against accidental contact with the gears the motor is fitted with a bracket with four fixing holes for easy mounting to a flat