Tools // Component Selector // T-Motor
T-Motor MN505-S KV320
professional uav brushless motor. Specs read from manufacturer page ↗.
advertised This thrust figure is the one the vendor advertises, read from their product copy. The throttle setting, propeller and cell count behind it are frequently unstated, so it is a guide rather than a measurement.
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Specifications
| Brand | T-Motor |
|---|---|
| Model | MN505-S |
| Variant | KV320 |
| KV | 320 |
| Weight | 400 g |
| Max thrust | 6,700 g |
| Max current | 55.0 A |
| Max power | 1,249 W |
| Peak power | 1,249 W |
| No-load current | 1.84 A |
| Winding resistance | 0.038 Ω |
| Poles | 24 |
| Max RPM | 5,625 |
| Hover efficiency | 9.46 g/W |
| Peak-throttle efficiency | 5.35 g/W |
| Grade | professional |
| Application | uav |
| Data confidence | reported |
| Thrust basis | reported |
| Efficiency basis | measured |
| Measured test points | 20 |
Measured thrust curve
Where to buy
| Vendor | Price | As listed | Stock | Lead days | |
|---|---|---|---|---|---|
| DrUAV CN | A$222.44 | USD 154.79 | backorder | 48 | buy ↗ |
| DrUAV CN | A$222.44 | USD 154.79 | backorder | 48 | buy ↗ |
Multi-pack listings are shown at their per-unit price so they stay comparable.
Thrust test points
| Propeller | Cells | Thrust g | g/W | Basis |
|---|---|---|---|---|
| unspecified | — | 6,680 | 5.35 | measured |
| unspecified | — | 5,747 | 5.85 | measured |
| unspecified | — | 4,828 | 6.50 | measured |
| unspecified | — | 4,349 | 6.80 | measured |
| unspecified | — | 3,843 | 7.21 | measured |
| unspecified | — | 3,665 | 7.33 | measured |
| unspecified | — | 3,477 | 7.50 | measured |
| unspecified | — | 3,298 | 7.69 | measured |
| unspecified | — | 3,149 | 7.90 | measured |
| unspecified | — | 2,968 | 8.15 | measured |
| unspecified | — | 2,799 | 8.36 | measured |
| unspecified | — | 2,586 | 8.59 | measured |
| unspecified | — | 2,413 | 8.86 | measured |
| unspecified | — | 2,267 | 9.20 | measured |
| unspecified | — | 2,090 | 9.46 | measured |
| unspecified | — | 1,959 | 9.79 | measured |
| unspecified | — | 1,788 | 9.95 | measured |
| unspecified | — | 1,657 | 10.24 | measured |
| unspecified | — | 1,525 | 10.49 | measured |
| unspecified | — | 1,424 | 10.83 | measured |
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 →