Worried about the “clunk” at the stop of your Rotax 912 ? But maybe that’s not the worst part… Here is a video on this subject, made by Jérémie Buiatti, E-Props designer :
E-PROPS has developed a Data Acquisition System to measure propeller torque and traction in all phases of flight. This unique equipement is mounted on a ROTAX 912S engine. Measurements taken at the start and stop of the 912S show astonishing results.