The new Silver Spark line of motors has the same diameter gearhead as the Gold Sparks, but the gears are a larger pitch. This means less worrying about stripping teeth in your bigger or heavier applications!


(Comparing Gold Spark output gear to Silver Spark)

• Extra-long 3mm shaft for mounting wheels directly with the option to use a bearing block for support on the wheel's far side.
• Same 11mm face mount pattern as Gold Spark motors.
• All-metal spur gearhead mated to a Mabuchi FK-050 motor.
• 9 different gear ratios: 11.1, 22.2, 33.3, 50, 83.3, 100, 200, 300, and 600 :1.  One twice as fast, and one twice as slow as the Gold Sparks!
• Weigh between 28 - 32grams (0.99 - 1.13oz).

These motors make it super simple to get a robot moving! Just pick up a pair of Lite Flite wheels and Lite Hubs to mount them, solder on a pair of tinyESCs and your motors are ready to be driven by radio control!  For mounting the motors, use 2-56 screws and our custom motor mounts.  We now also carry 3mm bearing blocks for supporting the shaft in heavy robots or weapon systems.

Our friends at KITBOTS have made a flange face mount for Gold Spark and Silver Spark motors.

Note - For strenuous conditions (such as robot combat), we recommend removing the gearbox and ensuring that the motor vent hole does not line up with a gearbox pin.  If it does, simply rotate the gearbox 180 degrees and reattach.  Use Loctite on the screws that hold the gearbox to the motor.  This will ensure they cannot separate during competition!

Motor (Mabuchi FK-050SH-13125) Specifications Operating Voltage: 3V - 22.2V (>10V decreases motor life) Nominal Voltage: 6Vdc No Load RPM: 11530rpm No Load Current: 0.09A Stall Current: 1.3A Stall Torque: 0.0461kg-cm (0.64oz-in) Kt: 0.0352kg-cm/A (0.49oz-in/A) Kv: 1573rpm/V Peak Efficiency: 52% RPM @ Peak Eff: 9100 Current @ Peak Eff: 0.34A Click here for the motor torque, current, rpm and efficiency curve.

Physical Specifications Gearbox Lengths:   ratios 11: 11.5mm (0.45in)   ratios 22, 33, 50: 12.7mm (0.50in)   ratios 83, 100: 14.3mm (0.56in)   ratios 200, 300: 16.4mm (0.65in)   ratios 600: 17.9mm (0.70in) Motor Length: 28.7mm (1.13in) Gearbox Diameter: 16mm (0.63in) Shaft Diameter: 3mm (0.12in) with flat along length Shaft Length: 38mm (1.5in) Mounting Holes (2): #2-56 spaced 11mm (0.433in) apart -do not use screws that protrude more than 2mm (0.078in) into gearbox Weight:   ratios 11: 28g (0.99oz)   ratios 22, 33, 50, 83, 100: 29g (1.02oz)   ratios 200, 300: 31g (1.09oz)   ratios 600: 32g (1.13oz)

No Load Speed @ Gear Ratio/Voltage (Click to Enlarge) Motors have been tested to work up to 22.2V (6 lipoly cells), but don't expect the motor to run that high forever!

Maximum Torque @ Ratio/Voltage (kg-cm) (oz-in) (Click to Enlarge) Exceeding 9.72kg-cm (135oz-in) will damage the output gear stage. Do not stall the motors highlighted in red at the indicated voltage.