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Old 03 June 2006, 18:01   #41
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Ribeye 5.8, Yamaha F100. 5 large adults, loads of gear, 50 litres fuel, flat water= 36mph
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Old 03 June 2006, 21:41   #42
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Ballistic 6.5m 115 ficht wot @ 5500 no trim + 3 people slight chop 100ltrs fuel 30knots. same conditions fully trimmed up 34 - 35knots gps,prop used 17" ss
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Old 04 June 2006, 00:20   #43
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Quote:
Originally Posted by andrew.adamson
Rogue Wave was at 42 knots on my heavty boat with me paying for the fuel, what a mug am I!! Two up and only at 5000 revs and more to come.
Now c'mon Andrew You know that isn't true!

It was 44 Knots before it all got too wobbly, how lovely it was to have an opti behind me again. Have I ever mentioned I like those engines
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Old 05 June 2006, 08:46   #44
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Still more please

Particulalrly interested in 6.25 to 6.5 with 125+hp. This is where the data so far is richest and I might be able to publish some conclutsions - but all sizes over 5M and below 6.75M are welcome to post.

Thanks
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Old 05 June 2006, 09:07   #45
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Initial findings

Here is a graph - forgive excel to adobe pdf to photoshop translation but I can't post excel here - can I, JK?

It is of the 6.3 to 6.5 M petrol ribs in the survey, plotting HP vs reported WOT in knots.

More data please!!!!!!
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Old 05 June 2006, 09:46   #46
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XS 600 115 opti, 17" prop, 120l fuel, 2 people, 5600rpm, 41mph

I am trying a 19" prop in couple of weeks so will let you know the difference.

mark
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Old 05 June 2006, 10:49   #47
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5.75 Viper 150 opti 46 knots best so far!
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Old 06 June 2006, 07:27   #48
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Osprey Vipermax 6.5m with Merc 150 opti.
Can't remember the prop but I think its a 21" laser.
5000 rpm (still running in!) 43 knots and scared!
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Old 07 June 2006, 12:12   #49
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Rib-X 575 (5.8m) with Suziki 90HP

Did our top speed on Sunday trimmed right up and with the wind behind us at 40.2mph, me and two kids light fuel load.

Usually does about 38mph flat out not trimmed to high.

Went out in a Rib-X 650 with a 200HP etec at the Rib show. Got frightened at 52mph and slowed down still had loads left.
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Old 07 June 2006, 16:32   #50
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17.5' Aluminum Rib, Yamaha F115, solo, no dive gear, about 3/4 of a 50 gallon tank yields a speed of about 38 or so mph in flat water.

jky
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Old 07 June 2006, 17:20   #51
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5.5m Cobra, 120l fuel, 3 divers and kit 17 Rev 4 44 mph at sea > good conditions
40 ltrs fuel, 2 crew, 19" laser II > inland lake 51.9mph ........ and not a .00001 more
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Old 07 June 2006, 19:41   #52
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Quote:
Originally Posted by brucehawsker
Here is a graph - forgive excel to adobe pdf to photoshop translation but I can't post excel here - can I, JK?
No, but you can post a PDF though which would cut out one of the steps!

John
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Old 07 June 2006, 21:39   #53
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Tornado 6.5 with mercury optimax 200 - 49kts and streaming eyes!!!
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Old 07 June 2006, 22:15   #54
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Quote:
Originally Posted by Phil Chitty
Osprey Vipermax 6.5m with Merc 150 opti.
Can't remember the prop but I think its a 21" laser.
5000 rpm (still running in!) 43 knots and scared!
Ummmm, curious.
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Old 07 June 2006, 22:39   #55
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Quote:
Originally Posted by Alice
Ummmm, curious.
Doesn't that compare well with your Scorpion?
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Old 07 June 2006, 23:00   #56
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Quote:
Originally Posted by Alice
Ummmm, curious.
No antifouling I guess
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Old 08 June 2006, 11:49   #57
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humber ocean pro, 140hp suzuki, 50ltrs fuel, two people up, 41knts, same with 4 people, 37knts full throttle
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Old 08 June 2006, 14:58   #58
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Quote:
Originally Posted by Phil Chitty
Osprey Vipermax 6.5m with Merc 150 opti.
Can't remember the prop but I think its a 21" laser.
5000 rpm (still running in!) 43 knots and scared!
hi phil chitty, is a nice boat and fast, do u have a photos to me.and now i'm looking for a Gemini rib 5.5, what are u feeling that boat, pls reply me. Rambo
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Old 08 June 2006, 18:47   #59
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Quote:
Originally Posted by Alice
Ummmm, curious.
i can quote for 40 + wid that boat
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Old 08 June 2006, 21:10   #60
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Alice I expect you probably stretched your throttle cable doing all them vrooom circles
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