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Author Topic:   Guardian 18, E-TEC 150: Stiletto Propeller

LuckyLady posted 08-26-2008 02:26 PM ET (US)
I want to put a four-blade Stiletto propeller on [my E-TEC 150-HP motor on] my 1987 Guardian 18 mainly because of rough seas and heavy load. I am not so worried about top speed, just the power and stability to plow through the seas. I have narrowed down [the choices] to a Bay Pro II or Bay Pro III. I really need help on the pitch size. I would love your recommendations. TWC: sorry to have bothered you on your honeymoon.
Mahalo.
Rene'
Forgot to add that I have a Jack Rite-Hite 6" on the stern.
Tom W Clark posted 08-26-2008 02:44 PM ET (US)
Hi René,
You want the 14-1/4" x 15" Bay Pro III 4.75, part # E 807415 with a Guardian SQ-Lok hub kit, part # DE-502.
Shoot me an email with your shipping address and phone number and I can order it up for you.
LuckyLady posted 08-26-2008 04:41 PM ET (US)
Thanks Tom!
mainah posted 08-26-2008 09:32 PM ET (US)
[Recommends considering] the Ron Hill line of four-blade propellers.
jimh posted 08-26-2008 11:08 PM ET (US)
Who is Ron Hill?
L H G posted 08-27-2008 02:08 AM ET (US)
Ron Hill is a well known West coast performance prop manufacturer in CA.
It seems strange that a prop called "Bay Pro" would be for offshore use in the Pacific. If it is, they ought to change the name. Sounds more like a flats/bass prop along the lines of a Mercury 4 blade Trophy Plus, which is not recommend for offshore use.
I would think a Mercury Enertia, 4 bladed Vensura/Offshore or Rev-4 (if the 150 E-tec gearcase can handle it) would be more appropriate. Only 15" pitch for the E-tec? Seems low with a 1.87 gear ratio. Friends with same HP on a similar HP hull run 17's or 19's.
Tom W Clark posted 08-27-2008 12:57 PM ET (US)
It is probably best to judge a propeller model on its merits, not its name.
The Stiletto Bay Pro II is the high(er) rake four blade design similar to Mercury's Trophy Plus and designed for high speed boats like bass boats.
The Bay Pro III has less rake and provides more stern lift. To quote Stiletto:
"The BAY PRO III series propellers give offshore fishing boats great acceleration and improved midrange performance in rough water and adverse conditions."
jimh posted 08-27-2008 10:43 PM ET (US)
"I want to put a four-blade Stiletto propeller on my 1987 Guardian 18 mainly because of rough seas and heavy load." (Emphasis added)
Going with a lower pitch propeller is a smart move when your boat is heavily loaded and you are operating in rough seas. On my boat I can run propellers with a pitch from 15 to 19-inches. When I am anticipating rough sea conditions and heavy loads I always change to the 15-inch pitch propeller. It just works so much better in those conditions. If you want to zoom along in the calm inshore waters like the American Intracoastal Water Way, yes, more pitch can be used. But for big seas--and in the offshore waters of Hawaii I can only imagine what your definition of "rough seas" might be--lower pitch will be much better.
I can't see how there can be some sort of correlation of this with the E-TEC motor. It seems like a very hard case to make.
ratherwhalering posted 08-28-2008 03:27 PM ET (US)
Matt Frymeir did the exact same thing with his 18-Outrage and 150HP E-TEC. He went from a Stiletto Advantage II, 14.25 x 17 in. to the 14-1/4" x 15" Bay Pro III in order to achieve slower planing speed (young children) with a heavier load. The maximum RPM was about the same, but the boat had better hole shot, less slip in following seas, and a lower planing speed. The WOT speed suffered by about 3-4 MPH, though.

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Author	Topic: Guardian 18, E-TEC 150: Stiletto Propeller
LuckyLady	posted 08-26-2008 02:26 PM ET (US) I want to put a four-blade Stiletto propeller on [my E-TEC 150-HP motor on] my 1987 Guardian 18 mainly because of rough seas and heavy load. I am not so worried about top speed, just the power and stability to plow through the seas. I have narrowed down [the choices] to a Bay Pro II or Bay Pro III. I really need help on the pitch size. I would love your recommendations. TWC: sorry to have bothered you on your honeymoon. Mahalo. Rene' Forgot to add that I have a Jack Rite-Hite 6" on the stern.
Tom W Clark	posted 08-26-2008 02:44 PM ET (US) Hi René, You want the 14-1/4" x 15" Bay Pro III 4.75, part # E 807415 with a Guardian SQ-Lok hub kit, part # DE-502. Shoot me an email with your shipping address and phone number and I can order it up for you.
LuckyLady	posted 08-26-2008 04:41 PM ET (US) Thanks Tom!
mainah	posted 08-26-2008 09:32 PM ET (US) [Recommends considering] the Ron Hill line of four-blade propellers.
jimh	posted 08-26-2008 11:08 PM ET (US) Who is Ron Hill?
L H G	posted 08-27-2008 02:08 AM ET (US) Ron Hill is a well known West coast performance prop manufacturer in CA. It seems strange that a prop called "Bay Pro" would be for offshore use in the Pacific. If it is, they ought to change the name. Sounds more like a flats/bass prop along the lines of a Mercury 4 blade Trophy Plus, which is not recommend for offshore use. I would think a Mercury Enertia, 4 bladed Vensura/Offshore or Rev-4 (if the 150 E-tec gearcase can handle it) would be more appropriate. Only 15" pitch for the E-tec? Seems low with a 1.87 gear ratio. Friends with same HP on a similar HP hull run 17's or 19's.
Tom W Clark	posted 08-27-2008 12:57 PM ET (US) It is probably best to judge a propeller model on its merits, not its name. The Stiletto Bay Pro II is the high(er) rake four blade design similar to Mercury's Trophy Plus and designed for high speed boats like bass boats. The Bay Pro III has less rake and provides more stern lift. To quote Stiletto: "The BAY PRO III series propellers give offshore fishing boats great acceleration and improved midrange performance in rough water and adverse conditions."
jimh	posted 08-27-2008 10:43 PM ET (US) "I want to put a four-blade Stiletto propeller on my 1987 Guardian 18 mainly because of rough seas and heavy load." (Emphasis added) Going with a lower pitch propeller is a smart move when your boat is heavily loaded and you are operating in rough seas. On my boat I can run propellers with a pitch from 15 to 19-inches. When I am anticipating rough sea conditions and heavy loads I always change to the 15-inch pitch propeller. It just works so much better in those conditions. If you want to zoom along in the calm inshore waters like the American Intracoastal Water Way, yes, more pitch can be used. But for big seas--and in the offshore waters of Hawaii I can only imagine what your definition of "rough seas" might be--lower pitch will be much better. I can't see how there can be some sort of correlation of this with the E-TEC motor. It seems like a very hard case to make.
ratherwhalering	posted 08-28-2008 03:27 PM ET (US) Matt Frymeir did the exact same thing with his 18-Outrage and 150HP E-TEC. He went from a Stiletto Advantage II, 14.25 x 17 in. to the 14-1/4" x 15" Bay Pro III in order to achieve slower planing speed (young children) with a heavier load. The maximum RPM was about the same, but the boat had better hole shot, less slip in following seas, and a lower planing speed. The WOT speed suffered by about 3-4 MPH, though.