[C38] 3 bladed folding prop

[1derful at comcast.net]

I occasionally race and the non-folding prop increases my rating by 6 points.  As Martha Stewart says, "That's a good thing." 

Patrick 



----- Original Message -----


From: "William Knowles" <whk1965 at gmail.com> 
To: "Catalina 38 Listserve" <listserve at catalina38.org> 
Sent: Tuesday, May 28, 2013 6:38:57 AM 
Subject: Re: [C38] 3 bladed folding prop 


I have a Kiwi three blade feathering. I could really feel the difference from the three blade michigan in both speed and turbulence across the rudder. I am sure the folding prop has less resistance but not sure if it worth the extra cost. 


Bill Flying Goose 



On Tue, May 28, 2013 at 12:28 AM, Steve Smolinske < SSmolinske at rainierrubber.com > wrote: 






Steve, 

  

I have a three bladed max prop I switch out for cruising, we race with a two bladed martec.  The max prop is amazing there is no vibration, lots of power and she backs out straight.  I love that prop.  It is feathering, but because you have three fins even when feathered you will get some drag especially as the boat pitches, two of the blades will provide resistance through the water as the stern goes up and down, still better than a fixed prop and, If that bothers you Max prop also makes a two blade version. 

  

Steve 

#312 Peregrine 

Seattle 

  



From: listserve-bounces at catalina38.org [mailto: listserve-bounces at catalina38.org ] On Behalf Of S Orton 
Sent: Monday, May 27, 2013 5:23 PM 
To: Cat 38 
Subject: [C38] 3 bladed folding prop 

  


Has anybody tried a 3 bladed folding prop?  Slipstream makes a geared 3 bladed folding prop which should have less drag and be more efficient than a feathering prop.  I've got to go to a three blades to reduce vibration and to make my cutlass bearings last longer-now a geared folding prop is installed.  I typically replace the cutlass every time I haul the boat.  Phil Gay tells me he hasn't replaced his cutlass since replacing his prop with a Max Prop and that was over ten years ago.  What kind of life are the members experiencing?  In the past, I removed the shaft took to a machine shop to inspect for trueness- the machinist did face the flange while mounted on the shaft less than .002", which didn't help.  I have also replaced engine mounts.  All alignment procedures were done on the hard.  The only thing left is to do is an alignment check in the water.  Or again maybe its the 2 bladed prop!  


Comments please,  Steve O (Santa Susanna,304) 
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W H Knowles 
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