FingerTech's Gold Spark motors are great for hobby use and in competition robots such as mini-sumo and line following. If your application will be close to or exceeding the specified torque limits, check out our
Silver Spark motors.
- The extra-long 3mm shaft is triple-supported internally so that wheels can be mounted directly.
- All-metal spur gear reduction gearhead mated to a Mabuchi FK-050 motor.
- 8 different gear ratios of 20, 35, 50, 86, 115, 150, 250, and 360:1
- At only 28grams (0.99oz), these are a lightweight yet powerful motor.
These motors make it super simple to get a robot moving! Just pick up a pair of
Foam Wheels and
Twist 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, and
Flat Motor Mounts for when you want to face-mount in a panel.
Motor (Mabuchi FK-050SH-13125) Specifications
Operating Voltage: 3V - 18.5V (>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 Length: 11.6mm (0.455in)
Motor Length: 28.7mm (1.13in)
Total Gearmotor Length: 40.3mm (1.59in)
Gearbox Diameter: 15.5mm (0.61in)
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 4mm (0.156in) into gearbox
Weight (all ratios): 28grams (0.99oz) |
Some ratio gearboxes can be interchanged because they use the same pinion gears on the motor.
20, 35, 50: 18T pinions
86, 115, 150, 250: 16T pinions
360: 14T pinion
So (for example) you can remove the 50:1 ratio gearbox from its motor and replace it with a 35:1 ratio gearbox for more speed - without needing to desolder the motor! (Might want to swap the stickers so you know what's in the robot!)
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 6.84kg-cm (95oz-in) will damage the output gear stage. Do not stall the motors highlighted in red at the indicated voltage. |
• 25-pack of 2-56 Button Head Screws (length of 1/8", 3/16" or 1/4")
• Black Oxide screws are harder than Stainless Steel or Zinc Plated and the heads will not strip out as easily.
• Use for mounting Gold Spark and Silver Spark motors.
• This bearing block can be used as a motor mount for 16mm gearmotors (such as our Spark motors) or as a simple bearing block for a 3mm shaft.
• The bearing works with the Spark Motors by aligning the mounting holes to the Spark mounting holes and offers additional shaft support.
These anodized 6061 aluminum Flat Motor Mounts are used to face-mount motors to flat robot sides.
• Includes a pair of mounts with countersunk mounting holes.
• 11mm hole pattern for Antweight motors like Gold Spark, Silver Spark, etc.
• 17mm hole pattern for Beetleweight motors like Kitbots 1000RPM, etc.
These anodized aluminum motor mounts will fit just about any small motor with mounting hole distances from 10mm - 12.5mm (0.39 - 0.49in). Especially suited to both Gold and Silver Spark motors, they will also hold all "Mini Metal Gearmotors", small Copal motors, Maxon motors, etc.
• Seven different mounting slots will fit up to 3mm or 4-40 sized screws.
• Width: 16mm (0.63in)
• Height: 19.8mm (0.78in)
• Length: 18.6mm (0.73in)
• Thickness: 1.45mm (0.057in)
• Shaft height: A motor with 11mm hole spacing will raise the motor shaft up to 11.7mm (0.46in).
• Only 1.5grams (0.05oz) each!
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