RE: question about prop?
Hi!
A 11x5 or 11x6 are the best sizes for a high winged trainer if flown from sea level and APC, RAM or Graupner (not the old blunt tipped gray prop though, are the best props to use.
10x6 and 11x4 does not give enough performance.
As always : Stay away from MA white tipped props! No good!