Gemfan D51 Props
Score: 89/100
Horex Drone Lubricant
Score: 86/100Rankings
The Gemfan D51 5-blade 51 mm prop is optimized for 2-inch cinewhoop drones, delivering strong low-end thrust, quiet operation, and robust polycarbonate construction. Its T-mount fits 1.5 mm shafts directly, making it a plug-and-play solution for 1204+ motors.
Horex Drone Dry Film Lubricant uses a PFPE-based liquid that evaporates to a dust-resistant dry film, ideal for high-RPM drone components and harsh agricultural settings. It offers precise application via a needle-tip dropper but suffers from unclear instructions and occasional packaging leaks.
| Attribute | Gemfan D51 Props | |
|---|---|---|
| ↓ lower better | 0.996 gbest | 27.22 g |
51 mmbest | — | |
48.3 mmbest | — | |
5best | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | Gemfan D51 Props | |
|---|---|---|
Compatibility(1) | ||
Compatible Drones | 2‑inch cinewhoop drones, 1204 and larger brushless motors | FPV drone propellers, motor shafts, bearings, drive shafts, camera hinges, gears, drawer slides, bicycle chains, garage door rollers, RC model aircraft, phone hinges, optical instrument hinges |
Weight & Dimensions(1) | ||
Product Weight (g) | 0.996 g | 27.22 g |
Build & Design(1) | ||
Material | Polycarbonate | PFPE |
Products in the top-left offer the best value (high score, low price).
Professional reviewers highlight the D51-5's low noise, high low-RPM thrust and solid construction, noting a ~12% static thrust gain over 4-blade counterparts but cautioning that the extra blade adds drag and current draw, making it less suited for high-speed racing.
Everyday users consistently praise the prop for its smooth, quiet flight and reliable hover performance in indoor or cinematic scenarios, while occasional complaints involve imbalance, motor heating on prolonged climbs, and a tight center hole that may need sanding.
Professional reviewers highlight the PFPE base as chemically inert, thermally stable and non-migrating, making it ideal for high-RPM drone components and harsh agricultural environments. They commend the dry-film technology for its dust-repellent properties while noting that clearer instructions and more consistent packaging would improve the user experience.
Everyday users rate the product 4.4/5 and repeatedly praise its ability to eliminate stick-slip, reduce noise, and extend flight time with minimal reapplication. Common complaints focus on unclear usage instructions, the need to shake the bottle due to stratification, and occasional packaging leaks.
“perfect for cinematic shots.”
“smoothness and quietness of flight”
“center hole fit can be tight on some motor shafts, requiring light sanding.”
