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Old 22 June 2009, 14:23   #11
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Well, if you're happy with 70-75hp, based on actual experience, then go for it.
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Old 22 June 2009, 14:40   #12
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The engine that was on it was a 70hp Evinrude VRO. That pushed it along quite well.
So what prop did you run on that and what was your performance.?
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Old 22 June 2009, 15:08   #13
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It has always been my impression that a 90hp was just a 75hp with a different carb. Correct me if i am wrong. I had a Delta 5-5 with a 75hp mariner in the mid 90`s for 5years and that went brilliant. Thanks
Yes, you are right, the 75, 90 & 115 are all the same engines but no longer have carbs, the main differance is a different pcm. you will find that a 75 optimax will be 75hp but with older 2 strokes, a 75 would probably actualy be more than 75hp, this is the case with merc/mariner 2 strokes, not sure on other brands.

As others say if you were happy with your 70, you should be ok with a 75 opti
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Old 22 June 2009, 16:58   #14
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17" Pitch. Is my guess!!
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Old 22 June 2009, 17:00   #15
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Try this website. Its usually pretty good, well within a pitch or so!..

http://appcenter.mercurymarine.com/propSelector/home.do
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Old 22 June 2009, 17:23   #16
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Prop size

Thanks foer all of the info. I managed to get in touch the dealer i am oredering off and they told me to get the weight of the boat of Delta. Many phone calls later and it has been agreed a 17" prop is best so thats getting sorted and should be fitted soon. Thanks once again.
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Old 23 June 2009, 03:35   #17
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I had a Delta 5-5 with a 75hp mariner in the mid 90`s for 5years and that went brilliant. Thanks
Hmm, perhaps Deltas are the new Ospreys , that should have a few folk worried

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Old 23 June 2009, 07:28   #18
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Hmm, perhaps Deltas are the new Ospreys , that should have a few folk worried

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Old 23 June 2009, 11:57   #19
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:d
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