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AADIVER
Admiral

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USA
966 Posts
Initially Posted - 03/14/2010 :  11:00:14  Show Profile  Visit AADIVER's Homepage
Have any of you installed an SE Sport Performance Marine Hydrofoil from WM and, if so, how does it perform per manufacturer's claims, and would you recommend I install one on my Tohatsu 9.8 o/b?
Thanks in advance
Frank Farmer
Long Beach, CA
aa.diver@verizon.net
http://mysite.verizon.net/aa.diver

PRETTY PENNY
'01 C-250 WK, Hull #558
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PDXSteve
Deckhand

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20 Posts
Response Posted - 03/15/2010 :  10:29:51  Show Profile
-Boost fuel efficiency, improve performance, reduce on-plane rpm and plane at lower speeds
-Narrow footprint and sleek shape offer less drag resistance for greater speed and lower rpm
-Sport Clip enables hydrofoil installation without drilling

Considering that the hull of the 250 wasnt really built to plane, Im not sure it would be a good idea to install one of these babies...
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AADIVER
Admiral

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USA
966 Posts
Response Posted - 03/15/2010 :  16:45:24  Show Profile  Visit AADIVER's Homepage
You're right, Steve. Those "gizmos" ain't for us. But isn't there a product we can attach to the business end of our engines for cutting through kelp and flotsom and jetsom without getting it wrapped around the prop?
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piseas
Former Treasurer

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USA
2017 Posts
Response Posted - 03/19/2010 :  13:16:40  Show Profile  Visit piseas's Homepage
Frank, The only thing I have seen is a prop protector, not something to cut thru kelp, etc. Check out [url="http://www.propguard.net/how.html"]this[/url].
Steve A
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jbkayaker
Captain

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USA
299 Posts
Response Posted - 03/23/2010 :  18:06:48  Show Profile
I am skeptical of performance increase claims for the prop protector since there is more stuff being dragged thru the water.
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JohnP
Master Marine Consultant

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1520 Posts
Response Posted - 03/25/2010 :  15:12:08  Show Profile
Yes, indeed. I asked the manufacturer of the Prop Guard if it would prevent snagging kelp, and got this answer:

<font size="1"><i>"Dear JohnP,

Prop Guard installed will help deflect kelp but will not totally prevent kelp from wrapping around the prop.

ALL THE BEST

Greg Morrell
Prop Guard Marine, Inc"</i></font id="size1">
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 03/25/2010 :  18:00:06  Show Profile
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by jbkayaker</i>
<br />I am skeptical of performance increase claims for the prop protector since there is more stuff being dragged thru the water.<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">I see two possible advantages:

1. On a slow-moving boat (e.g., Catalina), the prop throws a portion of the water outward, like a paddle-wheel, which is what causes "prop walk". A device like this might redirect more of that water aft, adding to the desired thrust and perhaps increasing efficiency more than the drag decreases it. On a high-speed boat, the efficiency benefit is probably reduced and drag might be increased, which could be one reason the manufacturers don't offer these things.

2. The suction of a prop is incredibly powerful--pulling anything (including arms and legs) into its blades. I've read about numerous cases where boaters have tried to maneuver to a person in the water, or a person has fallen off a moving boat, and the engine yanked an extremity into its meat-grinder.

In Florida's manatee waters, IMHO, the benefit greatly offsets any likely efficiency loss. I don't deal with kelp, so won't speculate.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.