It makes sense, efficiency wise, to run the largest prop you can, while maintaining the optimal prop clearance with the hull. What I don't understand is why no one is advocating varying the pitch to get the desired cruise rpm. This is the way it is done with gas outboards, diesel/gas inboards and with airplanes and helicopters. I have never heard of someone changing the prop diameter to gain rpm. In all the boats, airplanes and helicopters I have worked on, a gear drive is added for one reason: To allow running a propeller with a larger diameter to gain efficiency and thrust. RPM is regulated by pitch.
Jonny
__._,_.___
Posted by: arcticfab@yahoo.com
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (19) |
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.
.
__,_._,___
No comments:
Post a Comment