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Old 22 October 2011, 10:28   #81
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Country: USA
Town: New Jersey
Make: Amphibian 249
Length: 7m +
Engine: twin 250hp Yamaha
Join Date: Jun 2010
Posts: 170
Avon sr6, 150 yamaha 2 stroke, old imperfect 17p ss prop. 24 gal fuel and one up= 48.1mph @5800rpm on gps in flat water. zero chine walk.
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Old 22 October 2011, 10:39   #82
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Country: UK - England
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Lencraft 6.8 Yam 150 2 stroke standard prop not trimmed out kicked out 49mph 2 fatties up and 60 litres of fuel onboard

Peter ~ Boatsandoutboards4sale ~ askboatsandoutboards4sale@sky.com ~ 07930 421007
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Old 24 October 2011, 07:57   #83
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Country: UK - England
Town: Ipswich
Boat name: Jammy Dodger
Make: Avon Adventure 7.20
Length: 7m +
Engine: 200 Yamaha
Join Date: Dec 2008
Posts: 315
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Avon Adventure 7.2M with Yamaha 200 - 4 Stroke - 57 knots over water.

Avon Rover Rib 2.8M with Yamaha 9.9 - 2 Stroke - 22 Knots
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Old 24 October 2011, 16:04   #84
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Country: UK - England
Town: Manchester
Boat name: "mr Jingles"
Make: Ribcraft
Length: 5m +
Engine: 130 Etec
MMSI: 235074968
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43 knot with 4 fattie,s on board & a load of fishing gear
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Old 24 October 2011, 16:15   #85
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Country: UK - England
Town: Ashton-under-Lyne Lancs
Boat name: IMOGEN
Make: Air-Craft 5.4
Length: 5m +
Engine: Etec 60
MMSI: 235087492
Join Date: May 2010
Posts: 6,954
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Quote:
Originally Posted by hadd View Post
43 knot with 4 fattie,s on board & a load of fishing gear
Ermm you mean 3 fatties I'm nice and lean
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Old 24 October 2011, 16:39   #86
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Country: UK - England
Town: Manchester
Boat name: "mr Jingles"
Make: Ribcraft
Length: 5m +
Engine: 130 Etec
MMSI: 235074968
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Ermm you mean 3 fatties I'm nice and lean
With a belly
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Old 25 November 2011, 12:31   #87
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Country: USA
Town: New York
Boat name: Aperture
Make: 7m Willard /Avon SR4
Length: 7m +
Engine: 6BT / 50Hp Yamaha
MMSI: 338108624
Join Date: Nov 2010
Posts: 23
repowered my Avon 4m Searider with a 2 stoke 50hp Yamaha and she's running 48knots with 2 people on flat water.
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Old 25 November 2011, 21:16   #88
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Country: UK - England
Town: Leicestershire
Make: Avon SR4 Zodiac 310
Length: 4m +
Engine: Merc 40 2s Merc 15 2
Join Date: May 2009
Posts: 175
You mean 38 Knots ?
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Old 25 November 2011, 22:06   #89
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Country: USA
Town: New York
Boat name: Aperture
Make: 7m Willard /Avon SR4
Length: 7m +
Engine: 6BT / 50Hp Yamaha
MMSI: 338108624
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Posts: 23
she cruises nicely at 38 knots but WOT is 48 knots with 2 persons on board and 12 gallons of fuel. I'll check what prop I got on the engine.
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Old 25 November 2011, 22:57   #90
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Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 462
Love this thread and want to contribute but I have never been concerned with the actual speed number. I just love the feeling of speed, but in the interests of research I will be quantifying the fleet.

Over the next few weeks plan on taking all the family's RIB's and SIB out for a run with the iPhone gps app. Of course that depends on weather and other commitments.

Anybody wants to take a guess beforehand, you are most welcome.

Zodiac AR340 with a beat up 2001 Yamaha 20hp 2 stroke. Prop came with outboard and i think is 9 7/8 x 11 1/8.

Dockitjet 5.6m with 1996 200hp Suzuki in excellent condition. Has a 3 blade 25 inch prop at the moment. Only ever been run once and bad chime walk at 3000rpm but will raise the motor, put a 4 blader on and some weight in the front to see what will happen.

Ribtec 890SX with twin Yamaha diesel sterndrives 240hp ME421 sti's. Currently had standard Yamaha 21 inch props.

3.2 m no name air floor, inflatable keel Chinese SIB with Mariner 1989 15hp. Not sure of the prop, the only thing i can see on it is A122105P.

Redback Stinger 2.9m rib with Mariner 9.9, about 1990. No idea of the prop.

Zodiac 470 with (2000?) Mercury 50hp. Has a stainless 18 pitch prop.
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