The sound of my radial engine is very satisfying, it still is version 1, as I'd like to see if I can improve the internal workings of it. First however I...
BUILDING ENGINES WITH LEGO | Building Engines with LEGO Each engine is built from scratch and then rotated at 3000 rpm for visualization and to demonstrate balance. Created by Brick... | By
Radial aircraft engine for a post-apocalyptic motorcycle that should be done in the next week or two :) : r/lego
LEGO MOC Double 8 Radial Engine by Joebot360 | Rebrickable - Build with LEGO
radial 12 cylinder engine - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
Lego Technic plane with radial engine (updated) - video Dailymotion