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#1
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Thanks to all -- who helped with my initial question.
(Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm (should be around 4500) After poking around mercury's website, and talking to a prop shop; I've narrowed down my choices to these: Revolution4, 4 blade 17 pitch Vensura, 4 blade 17 pitch Enertia, 3 blade 17 pitch I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit of real-world, non-salesman based opinions on it. Thanks -josh |
#2
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Hmmmmmmm.....
The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150 RPM from the slight change in blade profile. I'd say your motor is not performing up to snuff, or possibly the Gear ratio in the outdrive is wrong... Plenty of C.I. to run your original prop at 4500+, unless the props a dog and not designed well. (probable). JR Josh Assing wrote: Thanks to all -- who helped with my initial question. (Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm (should be around 4500) After poking around mercury's website, and talking to a prop shop; I've narrowed down my choices to these: Revolution4, 4 blade 17 pitch Vensura, 4 blade 17 pitch Enertia, 3 blade 17 pitch I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit of real-world, non-salesman based opinions on it. Thanks -josh -- -------------------------------------------------------------- Home Page: http://www.seanet.com/~jasonrnorth |
#3
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The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is
4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150 RPM from the slight change in blade profile. I'd say your motor is not performing up to snuff, or possibly the Gear ratio in the outdrive is wrong... Plenty of C.I. to run your original prop at 4500+, unless the props a dog and not designed well. (probable). The bluewater is known for being a pig out of the hole, and incredably stern heavy. The engine is running as good as it's going to w/o a rebuild. No blow by, even compression. New plugs, wires, cap/rotor. Timing set. New coil (really helped a lot) and a professional carb rebuild. The original prop was a 17 pitch; the PO got a "deal" on this 3 blade SS prop (19 pitch) on the hope that he would get a higher top end. Thanks -josh |
#4
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Has it got anti-fouling on it?
If so is it self-polishing? (or what you call it in your country?) Any sign of osmosis? Any barnicles? Any overweight women or fishermen? Any excess luggage / equipment? Excess tilt up or down? If all that is under control then try pitch down before you kill your chequebook. (Aust spelling!) "Josh Assing" wrote in message ... The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150 RPM from the slight change in blade profile. I'd say your motor is not performing up to snuff, or possibly the Gear ratio in the outdrive is wrong... Plenty of C.I. to run your original prop at 4500+, unless the props a dog and not designed well. (probable). The bluewater is known for being a pig out of the hole, and incredably stern heavy. The engine is running as good as it's going to w/o a rebuild. No blow by, even compression. New plugs, wires, cap/rotor. Timing set. New coil (really helped a lot) and a professional carb rebuild. The original prop was a 17 pitch; the PO got a "deal" on this 3 blade SS prop (19 pitch) on the hope that he would get a higher top end. Thanks -josh |
#5
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Has it got anti-fouling on it?
"it" being the boat, drive, or prop? Yes to the 1st 2, no to the last. If so is it self-polishing? (or what you call it in your country?) Dunno what that means. Any sign of osmosis? The boat has absorbed some water, but nothing to be too concerned about. If you mean electrolsis - no signs of that. Any barnicles? not a one. Any overweight women or fishermen? Doesn't matter, seems to perform the same with just me or 2 other people. What defines "overweigth" - I'm well under the rated load for the boat. Any excess luggage / equipment? if by excess you mean weight, no. if by not-needed, probably... ;-) Excess tilt up or down? no If all that is under control then try pitch down before you kill your chequebook. (Aust spelling!) Well; I'm at 19; thinking about a 17 -- either way; it costs to reprop... I'm so close teh correct RPM for WOT -- that I want to try an 18, but pretty sure I'd just end up going to a 17 anyway. |
#6
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JR North wrote:
Hmmmmmmm..... The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150 RPM from the slight change in blade profile. I'd say your motor is not performing up to snuff, or possibly the Gear ratio in the outdrive is wrong... Plenty of C.I. to run your original prop at 4500+, unless the props a dog and not designed well. (probable). JR Josh Assing wrote: Thanks to all -- who helped with my initial question. (Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm (should be around 4500) After poking around mercury's website, and talking to a prop shop; I've narrowed down my choices to these: Revolution4, 4 blade 17 pitch Vensura, 4 blade 17 pitch Enertia, 3 blade 17 pitch I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit of real-world, non-salesman based opinions on it. Thanks -josh I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP motor. IMHO They work great and are relatively inexpensive. Liberally Yours, 1.20.09 Fredo |
#7
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Anti-fouling for fast craft (racing yachts & semi-planing or planing hulls)
is available in "self-polishing" or ablutive type. Basically this means that as the effectiveness of the application reduces, it gets worn off (released?) until if you keep using your boat there is none left at all on your hull. This also keeps the surface polished & very smooth. After several years of experience you will know how heavy to apply it to last the season & therefore reduce the ammount you need to remove prior to next years application. If you aren't using this type, then it WILL drag your speed down drastically. Look up "Interlux ablutive" in google. "Fredo" wrote in message ... JR North wrote: Hmmmmmmm..... The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150 RPM from the slight change in blade profile. I'd say your motor is not performing up to snuff, or possibly the Gear ratio in the outdrive is wrong... Plenty of C.I. to run your original prop at 4500+, unless the props a dog and not designed well. (probable). JR Josh Assing wrote: Thanks to all -- who helped with my initial question. (Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm (should be around 4500) After poking around mercury's website, and talking to a prop shop; I've narrowed down my choices to these: Revolution4, 4 blade 17 pitch Vensura, 4 blade 17 pitch Enertia, 3 blade 17 pitch I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit of real-world, non-salesman based opinions on it. Thanks -josh I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP motor. IMHO They work great and are relatively inexpensive. Liberally Yours, 1.20.09 Fredo |
#8
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Or even look up "Interlux ablative" !!! ooops!
"BruceM" wrote in message ... Anti-fouling for fast craft (racing yachts & semi-planing or planing hulls) is available in "self-polishing" or ablutive type. Basically this means that as the effectiveness of the application reduces, it gets worn off (released?) until if you keep using your boat there is none left at all on your hull. This also keeps the surface polished & very smooth. After several years of experience you will know how heavy to apply it to last the season & therefore reduce the ammount you need to remove prior to next years application. If you aren't using this type, then it WILL drag your speed down drastically. Look up "Interlux ablutive" in google. "Fredo" wrote in message ... JR North wrote: Hmmmmmmm..... The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150 RPM from the slight change in blade profile. I'd say your motor is not performing up to snuff, or possibly the Gear ratio in the outdrive is wrong... Plenty of C.I. to run your original prop at 4500+, unless the props a dog and not designed well. (probable). JR Josh Assing wrote: Thanks to all -- who helped with my initial question. (Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm (should be around 4500) After poking around mercury's website, and talking to a prop shop; I've narrowed down my choices to these: Revolution4, 4 blade 17 pitch Vensura, 4 blade 17 pitch Enertia, 3 blade 17 pitch I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit of real-world, non-salesman based opinions on it. Thanks -josh I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP motor. IMHO They work great and are relatively inexpensive. Liberally Yours, 1.20.09 Fredo |
#9
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On Sun, 22 Apr 2007 10:04:11 +0930, "BruceM" wrote:
Anti-fouling for fast craft (racing yachts & semi-planing or planing hulls) is available in "self-polishing" or ablutive type. Basically this means that as the effectiveness of the application reduces, it gets worn off (released?) until if you keep using your boat there is none left at all on your hull. This also keeps the surface polished & very smooth. After several years of experience you will know how heavy to apply it to last the season & therefore reduce the ammount you need to remove prior to next years application. If you aren't using this type, then it WILL drag your speed down drastically. Look up "Interlux ablutive" in google. Ablative -- yes; that's what I'm using. "sluffing" is how we used to refer to it. "Fredo" wrote in message .. . JR North wrote: Hmmmmmmm..... The Stiletto SS 3 blade 19X17.5 on my 5.0 Mercruiser/Alpha 1 WOT is 4600. 6,000 lb 25' boat. It has been o/hauled twice in 16 years; picked up 150 RPM from the slight change in blade profile. I'd say your motor is not performing up to snuff, or possibly the Gear ratio in the outdrive is wrong... Plenty of C.I. to run your original prop at 4500+, unless the props a dog and not designed well. (probable). JR Josh Assing wrote: Thanks to all -- who helped with my initial question. (Current: 22' cuddy -- HEAVY boat, 5.7 alpha1 3 blade SS, 19pitch, 4100 rpm (should be around 4500) After poking around mercury's website, and talking to a prop shop; I've narrowed down my choices to these: Revolution4, 4 blade 17 pitch Vensura, 4 blade 17 pitch Enertia, 3 blade 17 pitch I'm leaning towards the revolution4 -- but it is pricey; so I want to get a bit of real-world, non-salesman based opinions on it. Thanks -josh I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP motor. IMHO They work great and are relatively inexpensive. Liberally Yours, 1.20.09 Fredo |
#10
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![]() I got an Apollo SS 13 1/4 X 17 it runs my little boat 40 mph with a 90 HP motor. IMHO They work great and are relatively inexpensive. There's a lot more than just HP that relates to the speed. I have a 19pitch on my 18' boat with a v6 and it is perfect for the boat --that same prop isn't so good on the 22'.... I'm leaning towards a 4 blade based on some reading & information I gleemed from "those in the business" (but not salesmen) Thanks -j |
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