Decided to go with the Black Star 5-250v3 bundled with a model from Tomahawk. The Black Star is essentially a Tomahawk branded UMS radial (virtually identical if not the same as the UMS 5-260). This is my first UMS engine but am very familiar with Moki and Saito radials.

Happy to share engine gets better every flight! Currently collecting & triaging telemetry data from PowerBox CORE - Max RPM during this flight was 4630 turning SEP 32x14 Wilga prop.

Engine starts easy, pulls strong and sounds fantastic!