BJCraft Muscle Cloud

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The Muscle Cloud is BJCraft’s latest high-performance biplane, developed as the evolution of the iconic Ultimate Biside. While it retains the proven wing and stab design of the Biside, it features a completely new fuselage that significantly enhances knife-edge performance while preserving the stability and wind-handling qualities pilots loved in the original. Juan flies the Muscle Cloud with a 24x20 propeller paired with the Dualsky Contra Rotating System—a combination he says delivers a flight feel reminiscent of indoor F3P, even in strong crosswinds, creating what he describes as a unique and refined flight mood. The updated front canopy follows the latest trends in F3A design, aligning the Muscle Cloud with the current aerodynamic standards of top-tier competition models. As always with BJCraft, the setup is straightforward, trimming is easy, and flight behavior is predictable and locked-in, even during challenging maneuvers like stall turns, spins, and snap rolls.

After debuting the Muscle Cloud, Juan immediately recognized the spirit of the Biside within it, but with completely renewed knife-edge capability. In his words, “You can see the soul of the Biside, but with a completely renewed knife-edge performance.” With today’s F3A schedules featuring more knife-edge elements than ever, the Muscle Cloud performs them with ease and precision. Juan emphasized that this is not a beginner’s airplane—it’s clearly built for expert pilots seeking the most updated and expanded flight envelope developed by BJ Park. Whether you’re chasing next-level knife-edge performance or simply want to experience one of the highest-performing biplanes available today, the Muscle Cloud delivers at the very top.