MKC
thanks a lot for your advice. I think you have raised the next question which I am also interested in. Is the cost efficiency/performance of single O/B same as twin O/B.
Any further input you may give would be appreciated.
1. 3 blades...or 4?
2. How does wheel diameter, pitch, and slip affect performance ...and how is it measured?
3. What is the difference between thru-hub exhaust, over-hub exhaust, and non thru-hub exhaust?
4. Aluminum vs. Stainless Steel (Cavitation)
5. Diameter
6. Pitch
7. Cupping
8. Rake
9. Ventilation