Propeller calculation information.. plz

[dj68]

Hi!
Im hopeing that u can help me. I need information about how to calculate propellers from details of a boat? Do u know anything that i can use?


Just write what u know.. im really desperate

[danmarine]

Try looking in the boat design directory. eris propeller foundry is comprehensive and has a prop calculator, under propeller sizing.
If you are missing details as to gear ratios etc then you need the original calculations and equations for size and pitch...
Hope somebody can give us some idea.
I know its not always a good idea to second guess performance and manufacture specifications but us boat repair guys normally have to contend with tight boat owners and using products available...
good luck,
dan

[sorenfdk]

Hej dj68

Gå på dit lokale bibliotek og lån Larsson & Eliasson: "Principles of Yacht Design" og/eller Kinney: "Skene's Elements of Yacht Design". Hvis de ikke har dem, så bed dem om at skaffe dem hjem, f.eks. fra Danmarks Tekniske Bibliotek.

Anf the rest of you have probably guessed that I told dj68 to visit his local library and borrow some books ;-)

Søren

[Davor]

Originally Posted by dj68

Hi!
Im hopeing that u can help me. I need information about how to calculate propellers from details of a boat? Do u know anything that i can use?


Just write what u know.. im really desperate

If you are naval arch or marine engineer try my software
www.sea-power.net

rgds

Davor

[MikeJohns]

Yes prop calcs are very important
If you want to do it yourself the best advice is:

Read a book by Dave Gerr called "the propellor handbook"

Cheers

[firestorm]

Go to Michigan Wheel I think it is www.miwheel.com they will do a prop sizing for you just fill in the blanks on their form and they will email you back in a few days with the correct prop for your boat and application.