Peter Sripol creates interesting ultralight aircraft, among other, sometimes scary projects. His latest is pulled along by a paramotor motor. Because of the small aircraft’s low and slow performance, the low-power (and very low noise) motor seems more than sufficient to the task. His fourth design, the Mk IV has no ailerons, much like an earlier ultralight, the Skypup. After initial tests showed shortcomings with the Mk. IV, quickly modified wings allowed Peter to return to the air quickly. As he explains, there won’t be plans for this airplane because it has too many not as yet time-tested innovations. The hot-wire-cut foam structure and vinyl wrapped wings are an unknown in terms of longevity, so it’s probably best to let Peter make his determination on that. Note the machine seems to be remarkably quiet, the OpenPPG motor drowned out by propeller noise. (That’s also low because of the e-Prop’s design.)* When Peter is able to shout down to his father …
