For a long time the Hacker Motor GmbH is very active in F3A. Countless championship have already flown with these drives.
You have a choice: inrunner motor with gear, as the proven C50-Competition or the new four-pole C54 Competition or the very quiet and powerful Q80 versions. For each F3A model and flying style the right engine is available.
Here is a comparison list of C54 to C50 Competition Motore: CLICK here