RE: what 3 blad prop size????? zdz80 blue head
I'm not sure I could say that I have experienced a performance gain when switching to a three blade prop, however, I do see some differences:
- Noise is reduced. I run three blade props and JMB cannisters on my IMAC planes and I enjoy flying them more and think I fly better because they have a quiet, pleasing sound. When I fly a plane with two blades and no cannisters it gets on my nerves a bit.
- Especially on the 40% planes, I was surprised to see little or no vertical performance drop off. These engines are so powerfull that it doesn't seem to make a difference. On the other hand, I don't know if its mental or not but it seems like I get a smoother acceleration when changing throttle.
- There might be a case to be made about differences in downline speeds between a two and three blade prop. I have actually heard it both ways- some say two blade better (bigger disc) some say three blade better (more blades to slow it down). I honestly couldn't say one was better than the other. I haven't flown a two blade in a while now.
If you go three blade I recommend the composite/fiberglass/carbon fiber type propellers like Mike recommended. I prefer the Mejzlik and ZM props (personal opinion).