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Old 28 April 2007, 06:08   #11
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We had one of the propulse adjustable 4-blade props on our honda 150, with the same pitch as the aly one we had on before we could barely make 4500 rpm, so adjusted it by one or two pitches and it was perfect, we only lost 1 knot off top speed and fuel consumption was amazing, 15lph at 25 knots.

It might be worth looking at these as we could adjust in 2 minutes depending on load etc.
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Old 28 April 2007, 06:11   #12
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At the moment by budget is only for one off ebay which seems to rule out something adjustable. I'm really liking the fact everyone seems to have seen their fuel consumption go down

Just need to know what pitch to get....
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Old 28 April 2007, 06:40   #13
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Originally Posted by Tim M View Post
Just need to know what pitch to get....
Tim, it seems to me the choice is; get a fixed pitch and take a chance, you'll be lucky to get it right, or wait for an adjustable one on which you will be able to set the pitch to correct.
Is it essential you have it right now?
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Old 28 April 2007, 06:41   #14
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It is rather as my present one got dinged....
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Old 28 April 2007, 06:48   #15
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Propulse
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Old 28 April 2007, 06:54   #16
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That would be ideal but it won't fit my engine (or will it?). Mine is a Bombadier Johnson (a suzuki df140) not an OMC...
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Old 28 April 2007, 07:38   #17
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http://www.tnorrismarine.co.uk/propulse.php is where we got ours from, might be worth giving them a call.

http://www.propulse.se/ on the 'fits to' section it looks like you'll need the 8902 model, at least when you ding it you can replace a balde
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Old 28 April 2007, 07:54   #18
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They're a lot cheaper than I thought they'd be. Problem is they don't seem to do one for my engine

Back to the ebay 4 blade idea....

Can anyone give me a rough idea of what sort of pitch would be suitable given my current 3 blade. There must be some sort of rule of thumb to go by
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Old 28 April 2007, 09:48   #19
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I tried 3 qand four blade props on my 60hp Yam through Steel dev and after bseveral trials on both blade sizes and pitches couldn't get a stainless to perform as well as the Yam 3 blade alloy one I had, so gave up.
I need a new prop soon and was curious about two things, do you change the pitch without removing from outboard and do people rate these propulse props?
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Old 28 April 2007, 11:17   #20
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TimM : 'I am on the verge of ordering now. Can anyone answer the above question?

Sounds like a 4 blade is the way to go....'

Hi Tim, this should answer your q, if your existing prop is the right pitch for the manufacturer, then go for the same pitch but in 4 blade. A 4 blade will drop around 50-100 revs at the top end, so if top revs aren't reached with existing prop, go for next pitch down. More info here: http://www.marine-outboards.com/choosing-propeller.htm
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