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Old 29 September 2003, 09:17   #1
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which stainless prop ???

Hi all,

I have an ali prop at the moment and wish to change it to a stainless prop and keep the ali as a spare. I have read numerous threads and am now completely brain dead, so any advise please on selection???

Engine Mariner 4 stroke 75 hp
Size : 13 1/4 17 pitch
Engine revs : 4500 - 5000
Boat 5mtr

The ali runs in the middle of the range generally speaking

what size would be suitable for my RiB and where for the best price. i would assume ( probably incorrectly) that some deals are available this time of year.

ta

paul
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Old 29 September 2003, 09:34   #2
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If your acheiving 5000 rpm WOT, which is the max rpm for your engine like youo say, then in my opinion it is proped out correctly, changing to a stainless will reduce the revs from your ali prop as there is less slip through the water. If you are happy with the performance of your setup, then i would go for a stainless prop of the same pitch and size of your ally, or possibly drop it down a pitch to a 16.
I would recommend Steel Developments, they are very helpful and occasionally have some good offers.

Mark
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Old 01 October 2003, 08:46   #3
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tempest plus

for me the tempest plus is by far the best prop.
And I tried a lot of props.
If you want speed and stability at the same time take that type.
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Old 01 October 2003, 14:27   #4
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Aside

If you dont mind me asking what sort of oil do you use in the opti what year is it and do you have a rough idea of fuel consumption cheers gavin
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Old 01 October 2003, 14:50   #5
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I've just spoken to a chap at "Steel Developments" this afternoon. Very helpful. No wonder they've been recommended before.
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Old 02 October 2003, 12:02   #6
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Tempest plus

From their site
TEMPEST PLUS

There's speed: then there's the jaw-dropping, adrenaline pumping speed of the three-blade stainless steel Tempest Plus. Engineered for high horsepower outboards this prop is ideal for heavy-load situations with its higher rank and bigger cup allowing for better handling and lift. That's why more bass boat companies require their boats to run with a Tempest Plus.

For big, V-6 outboard-powered bass, walleye and bay boats
Large 14 5/8" diameter for high motor height installations
R/H 19" - 29" pitch
PVS-equipped
Equipped with Flo-Torq II hub system

Are they suited to my little baby ?? I would think not - am I right !!!
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Old 02 October 2003, 14:41   #7
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I would highly recommend Steel Developments. I bought my propeller from them at the London Boat Show and they seemed very knowledgeable. Propeller ain't bad either.

In respects to suitable pitch - ask Steel Developments, its their business to know. However if you are reaching max RPM at WOT then they will probably advise you to get the same pitch in stainless.
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Old 02 October 2003, 14:45   #8
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Steel Dev

Quote:
get the same pitch in stainless
Spoke with them today and that's just what they said.

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Old 02 October 2003, 17:50   #9
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DJL

What size do you have on yours and type - new saturn, Titan??

and what top speed do you get seeing that yours is a somilar size engine and 4 stroke to boot?

paul
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