Real-World Cruise Data – 185 KTAS at 75% Power @8,000 ft with 918 EP Rotax | ANG Patriot Performance

In this clip, we’re flying straight and level at 5140 RPM- the 75% power setting for the Rotax 915 – delivering 153 KTAS on just 9.5 GPH at approximately 500 meters (~2,000 ft). With turbocharging, you gain approximately 2 MPH for every additional 1,000 ft of altitude, so at 8,000 ft you’re realistically cruising around 164 KTAS on the same power setting and engine and plane. (6 x 2 ft per 1,000 = 10 ktas) But here’s where it gets interesting. Switch to the Rotax 918 EP and you gain 40 additional horsepower in cruise. (106 of 915 vs. 150 of the 918) At this performance level, each extra horsepower translates into roughly 1–1.2 KTAS per HP. (141 hp of 915 / 154 ktas speed) — and since base HP is primarily overcoming gravity (not drag), the added power goes almost entirely into speed. That’s how we reliably reach 180–185 KTAS at 8,000 ft, verified the HP and fuel use on Dyno while burning just 10 GPH. Because drag increased exponentially with speed, but not in a noticeable way until you start going above 200mp. Speed gains at 150-180 ktas remain in a near-linear relationship with available horsepower. So, in all reality, we are likely to be pushing over 190 ktas at 8,000 ft, but only claiming 185. It’s a rare balance of efficiency and raw performance – and exactly why the ANG Patriot stands apart.

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Kit 13 was claimed yesterday. Kit 14 is now available — but only through this week.
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