Mercruiser Bravo 2 drives have 1 1/4" shaft and 19 splines IIRC. Not shure if it's the same spline type though, but worth checking, since you...
Checking some numbers, I can't make the ends meet here so I've got to keep pestering you with questions; The consumption figures you quote, are...
....so, when putt-putting along @6 mph you run them completely submerged then?
You didn't respond to the question "how deep do you operate......". What I want to know is if you can trim down the shaft units so the props are...
What can be achieved by a change depends on what you have right now in terms of blade shape and how deep you operate the "sting pins". So if you...
Excellent sum-up, thanx WetFeet!! I'd never open up my shop for a similar concept, unless it was backed up and verified by an engineering firm...
What, exactly is "hull speed", and why would it change the impulse mechanics?
Yah, I like that logic, I think a 3D graph would be more instructive than Prohaska, since you can have, say D, V, and cavitation sigma (or shaft...
Naah, you got to be careful there: Move more mass with less velocity increase, if you want efficiency!
Oh yes, that is the next step, figuring out the "effective working area", which is not as simple as it looks. But again when looking for a trend...
Sorry about that; it refers to the trendlines for the three prop types. A simple curve fit of the form Y=const*X^(exponent). Could probably have...
Hi Barry, you opened quite a wide “window” regarding design SOR, so the answer can not cover details. If you have a specific task in mind, I’d be...
Ok, then we are dealing with a dynamic case. There are two (at least) opposing influences active, both depending on aspect ratio (AR). If you...
In my world, the term "lift" is associated with dynamic events, like planing, while the outcome of the static displacement of fluid is referred to...
There are limits to the atruism you could expect from professionals here in their will to provide you with free expertise. And there is an...
.....let it out; you're in good company regarding order of priority.....
Polyethylene pipes (MDPE) are extremely tough as long as the supporting/connecting structure is correctly built.
Probably an inhouse Coast Guard venture. A bunch were built with up north in kind of a "local work aid program".
Interesting when new tools make "old" methods useful/competitive again. Would you please comment on design strategy to cope with the differences...
...and a telltale without restriction nozzle causes overheating! Have you checked that the little bugger is in place?