RE: we need a reversable engine
I recently bought a reversing cam for an OS FS-61 four stroke. That means I now have a pair of them, one left and one right hand running. Rather than try to find a L/H prop I thought it might be fun to build a Dornier 18? Push/pull waterplane. The other possibility is the German twin push /pull fighter.
I have spent some time wondering just how difficult it would be to make a copy mill to make L/H and R/H props. I quite enjoy building and making things NOTIONALLY.
old git aka JOHN L.