Thanks for the info. So would the x435 be much of a downsize from the original? This is the original replacement but I don't really understand the dimensions they are giveing. [link]http://www.proboatmodels.com/Products/Default.aspx?ProdID=PRB0150[/link]
They say it is 1.34" x 2.06". It looks like 1.34" is the diameter so does that make 2.06 the total pitch"?? The octura x435 has a total pitch of 1.932. Is that enough (about 6% smaller) of a downsize to get my rpm's up and heat down?
One more question, what do you mean by "efficient". I am not an idiot, I understand what the word means, but how does it apply to a prop? Do these metal props just use the power better? Maybe because you eliminate flex??? Thanks again for the info! - Matt