FingerTech FT1806 750KV Brushless Motor – Original
FingerTech FT1806 750KV Brushless Motor (Original)
The original FingerTech FT1806 750KV brushless motor — the proven drive motor at the heart of the Mega Spark brushless gearmotor system — is available as a standalone replacement part. Designed by FingerTech Robotics for beetleweight combat robots, this 750KV motor delivers reliable, smooth drive performance paired with the Mega Spark planetary gearbox. This original version includes a pinion gear — keeping your existing build match-ready without additional hardware. Stock is limited and will not be replenished; grab yours while you can.
$20.99
2 in stock
FingerTech FT1806 750KV Brushless Motor (Original)
The FingerTech FT1806 750KV brushless motor is the dedicated drive motor for the Mega Spark brushless gearmotor system — purpose-built for beetleweight combat robots. Whether you’re replacing a battle-damaged motor or building a new drive system from scratch, this is the exact motor used in the Mega Spark Brushless Drive Gearmotor — no guesswork, no fitment issues.
The FT1806 is a custom-wound, high-performance brushless outrunner rated at 750KV, designed specifically to mate with the Mega Spark planetary gearbox. At 750KV, this motor delivers more torque and lower top speed compared to the 1500KV and 2300KV variants — ideal for heavier beetleweights or builds prioritizing pushing power over raw speed. It runs happily on 2–4S LiPo and pairs best with the BL20A-R Reversing Brushless ESC for smooth, controllable drive performance.
This listing includes the FT1806 750KV motor and one 11T brass pinion gear — ready to drop straight into the Mega Spark planetary gearbox. Motor wires are 10cm long 26AWG with 3.5mm bullet connectors pre-installed. For builders who need to match an existing drive system exactly, this original version ensures identical hardware on both sides of the robot.
This is the original FT1806 750KV design. Stock is limited and will not be replenished once sold out. The updated version — featuring a redesigned 3mm stepped shaft — is available here: FT1806 750KV Brushless Motor (Updated).
Features
- Direct replacement for the drive motor on the Mega Spark Brushless Drive Gearmotor — exact fit, no modifications needed
- 750KV rating delivers maximum torque for pushing-power-focused beetleweight builds
- Includes 11T brass pinion gear — ready to mate with the Mega Spark planetary gearbox, no arbor press/pinion gear mounting needed
- Custom-wound brushless outrunner designed specifically for the Mega Spark drive system
- 23.1mm (0.91in) diameter — slightly smaller than the 24mm gearbox, won't rub on sidewalls when flush mounted
- Pre-installed 3.5mm bullet connectors on 10cm 26AWG wires for fast, clean ESC hookup
- Limited stock — original design — ideal for builders matching existing hardware exactly
Maintenance & Replacement Parts
| View | Kit | Description | In Stock | Price | Qty Per Kit | Buy |
|---|
Specifications
| Specification | Value |
|---|---|
| KV | 750KV |
| Rated Voltage | 20V (2–4S LiPo) |
| Rated Current | 10A |
| Max Current @12V | 10A |
| No-Load Current (with Mega Spark gearbox) | 1.1A |
| Motor Resistance | 0.15ohm |
| Weight | 25.9g (0.91oz) |
| Diameter × Length | 23.1mm (0.91in) × 18.5mm (0.73in) |
| Shaft Diameter | 2mm (0.078in) |
| Shaft Length | 9.6mm (0.38in) |
| Motor Wires | 10cm, 26AWG with 3.5mm bullet connectors |
| Mounting Pattern | Two M2-0.40 holes spaced 16mm (0.63in); two M2-0.40 spaced 12mm (0.47in), 90° offset. Rotating portion: four M2-0.40 holes evenly spaced on 9mm circle. |
| Screws Included | M2×4mm socket head cap screws (qty 4); use a 1.5mm hex key |
| Pinion Included | 11T brass pinion gear (1 included) |
| Recommended ESC | BL20A-R Reversing Brushless ESC |
Peak Performance Data
| Parameter | Value |
|---|---|
| Voltage (12V nominal) | 11.92V |
| Current | 10.3A |
| Efficiency | 58.68% |
| Torque | 0.0337N·m |
| Power | 72W |
| Speed | 6848rpm |
Frequently Asked Questions
Is this the right motor for my Mega Spark gearmotor?
Yes — the FT1806 750KV is the exact motor used in the Mega Spark Brushless Drive Gearmotor. It is a direct drop-in replacement requiring no modifications. If you are replacing a battle-damaged motor and want to match your existing build exactly, this is the one.
Do I need an arbor press to install the pinion gear?
No — this motor ships with the 11T brass pinion gear pre-installed. This is a meaningful advantage; pressing a pinion onto a bare motor shaft without an arbor press risks damaging the motor bearings. With the pinion already fitted, you can drop it straight into the Mega Spark planetary gearbox without any additional tooling.
What is the difference between the 750KV, 1500KV, and 2300KV versions?
KV rating determines the relationship between voltage and motor speed. Lower KV means more torque and lower top speed; higher KV means less torque and higher top speed. The 750KV is best for heavier beetleweights or pushing-power-focused builds. The 1500KV and 2300KV variants are better suited for faster, more agile builds.
What ESC should I use with this motor?
For drive use, we recommend the BL20A-R Reversing Brushless ESC. A reversing ESC is essential for combat robot drive systems — it allows the robot to drive both forward and backward from a single ESC without rewiring.
Can I mix this original motor with the updated FT1806 750KV?
The updated FT1806 750KV features a redesigned 3mm stepped shaft and is believed to be backward compatible with the Mega Spark gearbox. However, if you want to guarantee identical hardware on both sides of your robot — which many experienced builders strongly prefer — this original version is your best option while stock lasts. Confirm compatibility with FingerTech before mixing motor versions in an existing build.
Will this motor be restocked?
No — this is the original FT1806 750KV design and will not be replenished once stock is gone. If you need spares for your current build, we strongly recommend picking up extras now. The updated version is available here: FT1806 750KV Brushless Motor (Updated).
