Happymodel EX 1002
| Stator | 1002 |
|---|---|
| KV options | 20000 |
| Weight | 2.45 g |
| Shaft | 1.5mm |
| Max cells | 1S |
| Configuration | 9N12P |
| Dimensions | Ø13.5x12.5 mm |
| Max thrust | 55.4 g |
| Price (approx.) | 12.99 USD |
At 2.45 g it is right at the class average across the 4 1002-class motors in our database (avg 2.5 g).
Thrust data (Happymodel bench test)
| KV | Prop | Battery | Throttle | Current | RPM | Thrust | Efficiency |
|---|---|---|---|---|---|---|---|
| 20000 | Gemfan 2015-2 2-blade propeller | 1S | — | 1.01 A | — | 12.9 g | 3.452 g/W |
| 20000 | Gemfan 2015-2 2-blade propeller | 1S | — | 2.01 A | — | 23.3 g | 3.133 g/W |
| 20000 | Gemfan 2015-2 2-blade propeller | 1S | — | 3 A | — | 32.1 g | 2.892 g/W |
| 20000 | Gemfan 2015-2 2-blade propeller | 1S | — | 4 A | — | 40.8 g | 2.757 g/W |
| 20000 | Gemfan 2015-2 2-blade propeller | 1S | — | 5 A | — | 48.9 g | 2.643 g/W |
| 20000 | Gemfan 2015-2 2-blade propeller | 1S | — | 5.99 A | — | 55.4 g | 2.5 g/W |
Manufacturer bench figures (Happymodel bench, 20000 KV on a Gemfan 2015-2 2-blade at 1S (3.7 V); 6 current steps 1.01-5.99 A, throttle not published); real-world thrust varies with ESC, battery sag and prop condition.
Thrust-to-weight with this motor
RPM & prop speed on this motor
Props in this motor's class
| Prop | Size | Blades | Weight |
|---|---|---|---|
| weBLEEDfpv HQ Ultralight Whoop 31MM | 1.22x1.0 | 3 | 0.16 g |
| HQProp 40MMX2 Ultralight 40mm Micro/Whoop | 1.6x1.2 | 2 | 0.2 g |
| HQProp 51MMX2 Ultralight | 2.0x0.9 | 2 | 0.23 g |
| Gemfan 35MMS 3-Blade | 1.4x0.96 | 3 | 0.24 g |
| HQProp 40mm Ultralight 3-Blade | 1.6x1.0 | 3 | 0.25 g |
Where this data comes from
The rows are Happymodel's own bench table, published as an HTML table in the body of its product post on happymodel.cn - the first brand in this dataset whose bench data is markup rather than a photographed sheet, so every figure here is the source's own text. The template is a no-load block (2 V, its current, its speed and the KV that measurement implies) repeated beside a run of Voltage / Current / Thrust / Efficiency / Power rows and the propeller. It steps CURRENT, not throttle, and publishes no per-row RPM, so both those columns are empty here. No spec-block cross-check is possible on this brand: Happymodel's Specifications blocks state no maximum power and no maximum current. Every row reproduces its own printed power as Voltage x Current to within 0.01 W, and its printed efficiency as Thrust / Power. Its no-load block is 0.5 A and 41820 RPM at 2 V, i.e. a measured 20910 KV against a 20000 KV nameplate. Identity with Happymodel's own Specifications block is the 10 mm x 2 mm stator, 20000 KV, a 1.5 mm shaft, 9N12P and 1S-only. **weight_g was corrected 2 g -> 2.45 g**, and the reason is a find: our RaceDayQuads listing prints "Motor Dimension: Ø10.5x13.5mm", "Wire length(include connector): 30mm" and "Weight: 2g", which are the RS0802's three figures to the digit - Happymodel's own EX1002 block says Ø13.5mm*12.5mm, 40 mm of wire and 2.45 g. A Ø10.5 mm bell is the 8 mm-stator size on this brand (both the RS0802 and the EX0802 are Ø10.5); a 10 mm stator does not fit inside it, so the retailer pasted a sibling product's block and the manufacturer's figures are the ones published here.