Tools // Component Selector // Sub250
Sub250 1002 KV21000
hobby fpv brushless motor. Specs read from manufacturer page ↗.
No thrust figure applies. Either the manufacturer publishes none, or this is a robotics/direct-drive motor where torque, not thrust, is the meaningful rating.
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Specifications
| Brand | Sub250 |
|---|---|
| Model | 1002 |
| Variant | KV21000 |
| KV | 21,000 |
| Stator | 1002 |
| Weight | 3 g |
| Poles | 9 |
| Grade | hobby |
| Application | fpv |
| Data confidence | reported |
| Thrust basis | none |
| Efficiency basis | none |
| Measured test points | 0 |
Where to buy
| Vendor | Price | As listed | Stock | Lead days | |
|---|---|---|---|---|---|
| Phaser FPV AU | A$19.99 | AUD 79.95 4-pack | backorder | 33 | buy ↗ |
| Pyrodrone US | A$24.07 | USD 66.99 4-pack | in stock | 14 | buy ↗ |
| Pyrodrone US | A$24.07 | USD 66.99 4-pack | in stock | 14 | buy ↗ |
| Pyrodrone US | A$27.29 | USD 18.99 | in stock | 14 | buy ↗ |
| Pyrodrone US | A$27.29 | USD 18.99 | in stock | 14 | buy ↗ |
| DrUAV CN | A$40.81 | USD 28.40 | backorder | 48 | buy ↗ |
| DrUAV CN | A$40.81 | USD 28.40 | backorder | 48 | buy ↗ |
| DrUAV CN | A$104.13 | USD 72.46 | backorder | 48 | buy ↗ |
| DrUAV CN | A$104.13 | USD 72.46 | backorder | 48 | buy ↗ |
Multi-pack listings are shown at their per-unit price so they stay comparable.
Compatible accessories
Parts this catalogue holds that fit this component, and the evidence behind each pairing. Fit is inferred from published specifications, not from having tried it. Confirm mounting and clearance before you buy.
rule of thumb The size conventionally run on a stator this big. Not a measurement -- check clearance and current draw before flying it.
| Accessory | Type | From |
|---|---|---|
| Gemfan 2.01" 4-blade propeller | propeller | A$0.28 |
| Phaserfpv 2x2.5 3-blade propeller | propeller | A$1.10 |
| Gemfan 2.5" propeller | propeller | A$1.45 |
| Gemfan 2x2.3 3-blade propeller | propeller | A$1.49 |
| HQProp 2x1.6 3-blade propeller | propeller | A$2.20 |
| DALprop 2" 4-blade propeller | propeller | A$2.20 |
| HQProp 2.5" propeller | propeller | A$2.89 |
| HQProp 2x2 3-blade propeller | propeller | A$4.30 |
| HQProp 2.5x2 3-blade propeller | propeller | A$4.30 |
| HQProp 2x2 4-blade propeller | propeller | A$4.30 |
| HQProp 2.4x0.9 3-blade propeller | propeller | A$4.95 |
| Phaserfpv 2.5x3.5 3-blade propeller | propeller | A$4.95 |
CAD model
No CAD model linked yet.
How the metrics are calculated
TWR is max thrust divided by motor weight, motor only, static, excluding propeller and ESC. EFTWR scales that by hover efficiency and RPM headroom, so it equals TWR for a motor at 8 g/W and 10,000 RPM. Full methodology and the whole catalogue →