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Old 28 September 2014, 18:32   #1
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Boat name: DynaMoHumm/ SRV/deja
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Question for Osprey 6.5 Vipermax

Owners with a 150 Happymax fitted. I'm initerested in what you founds the best prop for that particular comb.

Over to you Danielo
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Old 29 September 2014, 02:51   #2
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Originally Posted by Rogue Wave View Post
Owners with a 150 Happymax fitted. I'm initerested in what you founds the best prop for that particular comb.

Over to you Danielo
19" Lazy II. 40knts dead with everything else in order.
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Old 29 September 2014, 03:23   #3
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Oooo what you got ???

"Banana man" was a shortened 6.5, at only 6.

If memory serves me right (tis 10 years ago now can you believe it) we flittered between a 19 and 21 laser II. I always felt the happymax 150 had a little more to give but could never get it up to max rpm even dropping a pitch.
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Old 29 September 2014, 03:32   #4
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Oooo what you got ???

"Banana man" was a shortened 6.5, at only 6.

If memory serves me right (tis 10 years ago now can you believe it) we flittered between a 19 and 21 laser II. I always felt the happymax 150 had a little more to give but could never get it up to max rpm even dropping a pitch.
I tried a 21", it gave no more top end and stopped her from revving out.
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Old 29 September 2014, 03:38   #5
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I think we found the opposite, but of course 50cm means smaller lighter boat.

With a 19" we couldn't rev any higher WOT and seamed to be using a bit more fuel at 25knts to went back to 21".

What's max rpm, 5750? I've a feeling we were hitting 44/45knts lightly loaded but something like 5400. Like I said in my first post, it's was 2002 we rigged that boat and 2004 we sold it !!
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Old 29 September 2014, 04:53   #6
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Oooo what you got.
I WISH !
A guy on the platform has just bought on on ebay and he was asking me what prop and I told him that I thought the 19 inch last 2 would be right but that's only because of my Scorpion rig. So I'm asking on here from Osprey owners. UNFORTUNATELY he was choppered off yesterday on a compassionate so I'll probably talk props with him some other time
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Old 29 September 2014, 05:00   #7
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Repeat posting sorry
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Old 29 September 2014, 15:51   #8
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Rogue Wave, if you don't mind me asking but is the boat you are referring to formerly known as the Silverfox?
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Old 29 September 2014, 16:09   #9
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Rogue Wave, if you don't mind me asking but is the boat you are referring to formerly known as the Silverfox?
Which was previously known as mine.

I've heard that the last owner (not Mr. Spittle) has made a right mess of her.
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Old 30 September 2014, 15:53   #10
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Mollers, I know someone who has a 7m vipermax with an ermintrude 200hp HO and he claims that his boat will do a max speed of 50-52knots but based on your figures of a 6.5m vipermax powered by 150hp seems to suggest he is telling porkies!
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