T&T: Propeller efficiency

[Apa Ongpin]

Apart from pure efficiency, another consideration:

>From "All About Powerboats" by Roger Marshall (2002, International Marine/
McGraw Hill):

"A hull with a centerline keel requires a prop with an odd number of blades
to eliminate the possibility of two blades being masked by the keel at any
one time. If this were to happen, you would probably hear and feel
vibrations throughout the boat."

Rafael

On 8/3/07 6:29 AM, "LRZeitlin at aol.com" <LRZeitlin at aol.com> wrote:

> In a message dated 8/2/07 6:17:40 PM, flyjbaker at yahoo.com writes:
> 
> 
>> 
>> Larry,
>> 
>>   
>> 
>>       The question was still not answered.....3 blades or four???