Since he is talking about using a flywheel, a compound piston motor would probably be a good fit.
Low speed and low noise. Slower moving parts, less wear and tear when things come apart. [img]<fileStore.core_Emoticons>/emoticons/wacko.png[/img]/emoticons/[email protected] 2x" title=":S" width="20" />
https://youtu.be/rUg_ukBwsyo