Quick answer
Choose the Sandhawk 29mm for lighter flights and easier construction, or the Sandhawk 38mm for higher altitude and more powerful motor options.
Why motor mount size matters
The main difference between these two Sandhawk fin sets is the motor mount diameter they support. The 29mm version is designed for smaller, more common motors, while the 38mm version opens up a wider range of high-power reloads. Your choice directly affects the rocket's weight, thrust, and maximum altitude.
Build considerations
Both fin sets are made by LOC Precision and fit the same 2.26" diameter Sandhawk airframe. The 38mm version requires a larger motor tube and slightly more internal volume, which can add a few grams to the finished rocket. The 29mm version keeps the build simpler and lighter, making it a good option for your first high-power project.
Tradeoffs at a glance
- Motor compatibility: 29mm version fits standard 29mm motors (e.g., G, H impulse). 38mm version fits larger 38mm motors (e.g., H, I, J impulse). Choose 38mm if you plan to fly on I or J motors.
- Build complexity: 29mm version uses a smaller motor tube and less internal volume, making assembly quicker. 38mm version requires a larger tube and more precise fitting. 29mm is better for first-time high-power builders.
- Flight performance: 29mm version produces lower total impulse, resulting in lower altitude and slower liftoff. 38mm version can reach higher altitudes with faster acceleration. 38mm is better for altitude records or aggressive flights.
- Cost: 29mm fin set is priced at USD 4.48, while the 38mm version is USD 5.42. Motor costs also increase with size. 29mm is more budget-friendly for casual flying.
Product facts
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FS-2.26" Sandhawk 29mm: Designed for 2.26" diameter Sandhawk rocket with 29mm motor mount. Works with standard 29mm motors, keeping the rocket lighter and easier to assemble for intermediate builders.
FS-2.26" Sandhawk 29mm
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FS-2.26" Sandhawk 38mm: Compatible with 2.26" diameter Sandhawk rocket and 38mm motor mount configurations. Supports larger 38mm motors for higher thrust and altitude, but adds weight and complexity to the build.
FS-2.26" Sandhawk 38mm
Which Sandhawk fits your build?
Best for
- Intermediate builders who want a lighter, simpler high-power rocket
- Flyers who plan to use G or H impulse motors for sport flying
Not for
- Experienced flyers who need I or J motor capability for altitude or certification flights
