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double_a85

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Reply with quote  #31 
Muskie, it is interesting that in the picture from that link the cavitation burn is occurring in relatively the same spot as both of my props.

I have never claimed to be any expert in this... which is why I wanted to get more information.

What would cause the difference in props like that... Solas vs Evinrude? Leading edge thickness? Casting procedures?

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2008 Smokercraft Pro Angler 171
2009 90 h.p E-Tec
Model #: E90DPLSEE
Serial #: 05247322
muskiemouth

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Reply with quote  #32 
Yes it is interesting. I can't comment on the difference, but I can say that Evinrude would test their props against Evinrude engines. For Solas to do this with every engine/setup would be a tough proposition. IMHO the number one cause of cavitation is the design of the prop itself. Propeller designers are quite aware of this and we don't see all the unworkable designs because they have been weeded out. However (IHMO) a generic producer could have issues.

I had a similar boat and motor for years and I had both aluminum and SS props on it, and never had an issue. They were Evinrude props.

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2015 Campion Chase 580 BR, 2016 G2 Etec 225 HO (E225LHAG)
PhilH12

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Reply with quote  #33 
++ to muskiemouth.   A prop change would be 'easier' than relocating "externals", I would think.  [wink]

Best!

Phil

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20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
PhilH12

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Reply with quote  #34 
Just to add though - From EV's "Where the Power meets the Water"  

"Cavitation is caused by a disturbance of the water flow in front of the propeller. An irregularity in the boat bottom or gearcase, a misplaced transducer or speedometer pickup, or even a loose rivet can cause this problem."

Phil


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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
muskiemouth

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Reply with quote  #35 
Quote:
Originally Posted by PhilH12
Just to add though - From EV's "Where the Power meets the Water"  

"Cavitation is caused by a disturbance of the water flow in front of the propeller. An irregularity in the boat bottom or gearcase, a misplaced transducer or speedometer pickup, or even a loose rivet can cause this problem."

Phil



more accurately that should say "can be caused".

Cavitation happens on a lot of industrial equipment and the root cause is usually the design. A prop designer could produce a prop that always cavitates irrespective of anything else. Impellers on jet skis can cavitate, usually after market.

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2015 Campion Chase 580 BR, 2016 G2 Etec 225 HO (E225LHAG)
PhilH12

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Reply with quote  #36 
No argument from here!  Just 'copy/paste' from what I've got here as documents from EV.  [smile]

I also doubt that EV would be testing every "aftermarket" prop to determine their 'compatibility', as Solas can't test theirs.  It may be a valid point?  I surely can't answer that.  Where's LIQUIDNIRVANA (aka prop god) when we need him?  [biggrin]

Phil

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Always check the Easy Stuff First!
20' Weeres fishing pontoon
90 HP E-Tec E90DPLSUM  05184332
Lake Tawakoni, TX - Catfish Capital of Texas
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