New for April '24 - If you found the 2300KV AND the 1500KV too fast for your wheel size, we now carry this 750KV version!
In development for nearly two years, FingerTech's new Brushless Mega Spark Gearmotors are here to step up your beetleweight game.
We've taken the guesswork out of brushless drive. No more fiddling with mismatched faceplates and reflashing ESCs - just drop them in your robot and go!
Features:
- Tuned for the perfect mix of speed and torque. Depending on wheel size, you can outdrive or outpush any opponent!
- FingerTech's signature extra long shaft can be used for added inboard/outboard bearing support, or for extra wide wheels! Use a rotary disc to cut off the excess to save weight.
- The huge 6mm diameter shaft is plenty strong for mounting drive wheels directly.
- A nearly drop-in replacement for the common 22mm Brushed Planetary Gearmotor, these are 2mm larger diameter, but 3.5mm shorter in length, and 13.1grams (0.46oz) lighter!
Motor Specifications:
- FT1806 Custom-wound High Performance Brushless Outrunner
- KV: 750KV
- Stall Torque: Notes about Brushless Motor Torque
- Recommended ESC: BL20A-R Reversing Brushless ESC
- Diameter: 23.1mm (slightly smaller than gearbox, so it won't rub on a wall if flush mounted)
- Motor Wires: 10cm 26AWG long with 3.5mm bullet connectors
Gearbox Specifications:
- Premium planetary gearbox with dual deep-groove ball bearings on the output shaft and metal gears in all stages
- Ratio: 21.5:1
- Diameter: 24mm (0.94in)
- Shaft: 6mm diameter, 38mm length, hardened steel with precision ground D-flat for setscrews or D-bore hub.
- Mounting holes: 4x M2-0.40 holes spaced equally on an 18mm circle, fits our Flat Mega Spark Mount.
Gearmotor Specifications:
- RPM @ 3S: 387rpm
- RPM @ 4S: 516rpm
- Length: 46.5mm + 38mm shaft (1.83in + 1.50in shaft)
- Weight: 71.5g (2.52oz) (much of that is the extra long shaft, which we recommend cutting flush with the wheel)
Gearmotor Drawing
Battle Hardening:
* The below steps are good advice for most gearmotors, but a dab of hot glue on the outside of the Mega Spark gearbox's eight screw heads does a great job of stopping rotation, and is quite easy to do! We don't even bother removing screws to apply threadlock anymore.
As with every gearmotor, it is best practice to remove all the screws and reassemble using loctite. A small dab on each screw will be enough to keep them from vibrating loose.
- Since the gearboxes are packed with grease, it will need to be cleaned off of the eight small Phillips screws before applying the loctite.
- Even better than loctite is a product called Vibra-Tite VC-3. Apply it to the screw threads, wait 30min, and it will harden to a plastic-like coating. Since it hardens before touching the greasy gearbox threads, it can do a better job of holding the screws in place.
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