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FingerTech "Silver Spark" 16mm Gearmotor
FingerTech "Silver Spark" 16mm Gearmotor
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The 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!
• Weight 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, and Flat Motor Mounts for when you want to face-mount in a panel.

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 - 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 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)

All ratio gearboxes can be interchanged because they use the same 14T pinion gears on the motor.
So (for example) you can remove the 50:1 ratio gearbox from its motor and replace it with a 33:1 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 9.72kg-cm (135oz-in) will damage the output gear stage. Do not stall the motors highlighted in red at the indicated voltage.


 
16 Product Reviews - Average rating 4.9 / 5 (Show All)

Click to review this product

the standard for insect class combat robots

- 21st November 2016

I have 3 antweight and 2 beetleweight battlebots and all five of them use these motors. You've come to the right place for the best insect class drive motors in the game.

Best motor in the business.

- 21st November 2016

Best motor in the business. I'd be confident in saying 90% of ants using brushed motors uses these. The silvers are more robust .

Yes they can be damaged, but they're the best.

- 21st November 2016

Yes they can be damaged, but they're the best. Loctite the screws and mount the wheel as close as you can to the gearbox and you're golden. They're pretty durable for what they are. FingerTech has many must have products especially for 1lb bots, I bet 98% of 1lb has something from them in it.

Loctite to keep the gearbox from getting loose.

- 21st November 2016

I always remove the gearbox and loctite it back on. Also the shafts bend a little.... but then again I'm using it in a beetle.

22-1

- 16th September 2016

I run the 22-1 silver spark
1.5" wheels
3 cell lipo

Speed in turns is very fast. Strait boxrush speed leaves a little to be desired if you are used to maxon 17-1. It's fast but not very fast. I don't think I'd want any slower. I turned down the rates to 50% on the turning and it's very manageable.


Great motors

- 08th August 2016

I used these with the thin motor mount, the bearing block, and tinyESC's. I had a basic robot driving in 2 hours and they work great! DHL shipping worked great too. Thanks

Click to review this product

FingerTech Bearing BlockFingerTech Bearing Block - 4.76 CAD
• 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.
FingerTech Flat Motor Mount (pair)FingerTech Flat Motor Mount (pair) - 5.71 CAD
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.

FingerTech L-Bracket Motor Mount (pair)FingerTech L-Bracket Motor Mount (pair) - 4.52 CAD
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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Price: 23.81 CAD
18.09 USD 16.21 EUR

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