Product overview
The T-MOTOR HEP-L 28*9 is a propeller component for long-endurance multirotor UAVs. Its one-piece straight construction combines a resin-based carbon-fiber composite with a PMI core and a matte finish. Diameter is 28 inches (715.3mm), pitch is 9 inches (228.6mm), and average individual propeller weight is 59 g. An integrally formed QR code supports identification, while a protective propeller bag provides transport protection. The physical integration interface is a flange with a Ø10mm center hole, a Ø20mm bolt circle and four Ø3mm mounting holes.
Recommended motor pairings are the U8II PRO KV100 and U8II Lite KV100, each with a 12S recommendation and a recommended quadrotor takeoff weight of 12kg. Recommended propulsion combinations also pair these motors with FLAME 60A 12S equipment. The usual operating ranges are 2100–2640 RPM and 2.8–4.6 kg thrust. Recommended maxima are 5170 RPM and 19 kg thrust; the separate limit values are 5780 RPM and 24 kg. Installation requires matching the motor mounting-hole positions to the propeller interface.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | T-MOTOR HEP-L 28*9 |
| Application | Long-endurance multirotor UAVs |
| Diameter | 28 inches (715.3mm) |
| Pitch | 9 inches (228.6mm) |
| Average individual propeller weight | 59 g |
| Material | Resin-based carbon-fiber composite with PMI core |
| Surface finish | Matte |
| Propeller architecture | One-piece straight propeller |
| Usual thrust range | 2.8–4.6 kg |
| Usual rotational-speed range | 2100–2640 RPM |
| Recommended maximum rotational speed | 5170 RPM |
| Recommended maximum thrust | 19 kg |
| Limit rotational speed | 5780 RPM |
| Limit thrust | 24 kg |
| Mounting interface | Flange connection; Ø10mm center hole; Ø20mm bolt circle; four Ø3mm mounting holes |
| Recommended quadrotor takeoff weight with U8II PRO | 12kgU8II PRO KV100 motor; 12S; quadrotor configuration. |
| Recommended quadrotor takeoff weight with U8II Lite | 12kgU8II Lite KV100 motor; 12S; quadrotor configuration. |
| Recommended propulsion combinations | U8 II Lite KV100 + FLAME 60A 12S; U8 II Pro KV100 + FLAME 60A 12S |
| Identification and transport protection | Integrally formed QR code and protective propeller bag |
| Installation constraint | Motor mounting-hole positions must match the propeller interface |
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