longjohnsilver
Well-Known Member
Some manufacturers are not as precise as they should be. That's probably the reason for the difference. Has happened to me in the past., prop several inches out from what was stated.
Dave_Snelson
Well-Known Member
Nice way to rack up your cranage fees as well /forums/images/graemlins/wink.gif
I reckon its just that the props really aren't the same. They may look the same, they may be stamped up the same, but they ain't the same. It would take an experienced propeller engineering workshop to show you the difference.
I reckon its just that the props really aren't the same. They may look the same, they may be stamped up the same, but they ain't the same. It would take an experienced propeller engineering workshop to show you the difference.
MapisM
Well-Known Member
[ QUOTE ]
Nice way to rack up your cranage fees as well
[/ QUOTE ]That's not what I suggested, is it?
How would you use a crane while anchored... /forums/images/graemlins/confused.gif
Nice way to rack up your cranage fees as well
[/ QUOTE ]That's not what I suggested, is it?
How would you use a crane while anchored... /forums/images/graemlins/confused.gif
MapisM
Well-Known Member
[ QUOTE ]
prop several inches out from what was stated
[/ QUOTE ]Not in this case imho.
+150rpm and +2kts suggest an overall better performance, as after cleaning the hulls/props (which isn't the case either, as Mike explained), or with engines better tuned, or with better fuel, or in salt vs. fresh water, or God knows what else.
Longer or shorter pitch props would have different consequences.
prop several inches out from what was stated
[/ QUOTE ]Not in this case imho.
+150rpm and +2kts suggest an overall better performance, as after cleaning the hulls/props (which isn't the case either, as Mike explained), or with engines better tuned, or with better fuel, or in salt vs. fresh water, or God knows what else.
Longer or shorter pitch props would have different consequences.