5M to 6.5M Ribs - Speed Survey

[HUMBER P4VWL]

6.3 ocean pro with 175hp optimax, anti foul hull. Two up, c. 100L fuel. 53 mph max. Usually just judges past 50mph as you trim right out. V twitchy at that point.

[AMS]

90s BWM 5.4m hard nose, 140 hp 2 stroke, antifouled hull, 120l fuel and 4 up maxes out at 43mph, planes at 3000 rpm.

[ollyit]

Searider 5.4 Commercial Spec, Big Alloy Aframe, Heavier Console - 1989 70hp 2T Yamaha BETO Tube pressure probably a touch low, 30 litres of fuel, 1 x Adult - 33knots playing with trim - 17" K Series Standard Alloy Prop - RPM TBA

Searider 5.4 Commercial Spec, Big Alloy Aframe, Heavier Console - 1989 70hp 2T Yamaha BETO Tube pressure probably a touch low, 50 litres of fuel, 2 x Adults - 31 knots playing with trim - 17" K Series Standard Alloy Prop - RPM TBA

Recommened me a good stainless prop?

[Nos4r2]

Originally Posted by ollyit

Searider 5.4 Commercial Spec, Big Alloy Aframe, Heavier Console - 1989 70hp 2T Yamaha BETO Tube pressure probably a touch low, 30 litres of fuel, 1 x Adult - 33knots playing with trim - 17" K Series Standard Alloy Prop - RPM TBA

Searider 5.4 Commercial Spec, Big Alloy Aframe, Heavier Console - 1989 70hp 2T Yamaha BETO Tube pressure probably a touch low, 50 litres of fuel, 2 x Adults - 31 knots playing with trim - 17" K Series Standard Alloy Prop - RPM TBA

Recommened me a good stainless prop?

SR5.4 Navy spec, 1994 85hp Yam origin premix 2 stroke, 19" pitch Michigan Wheel Match, 50-75l of fuel aboard, one fatb*****d 38 knots flat calm,but usual top speed is 33-35kts if there's any waves at all.


I'd recommend you selling the 70, putting a Yam 90 and a 19" ally prop on.

Tried going down the SS route with a Michigan Wheel, it's just not worth it on a Searider for the price and how often you get into shallow water. I like my gearbox too much.

[charliee]

Cobra 6.6, Yam 150 WOT 5600, max speed 44mph - with 150 lts 2 people and a load of kit on board

[ollyit]

Originally Posted by Nos4r2

SR5.4 Navy spec, 1994 85hp Yam origin premix 2 stroke, 19" pitch Michigan Wheel Match, 50-75l of fuel aboard, one fatb*****d 38 knots flat calm,but usual top speed is 33-35kts if there's any waves at all.


I'd recommend you selling the 70, putting a Yam 90 and a 19" ally prop on.

Tried going down the SS route with a Michigan Wheel, it's just not worth it on a Searider for the price and how often you get into shallow water. I like my gearbox too much.

Thanks mate, I know your right after driving your 85 not that i gave it full beans but the difference was significant! - always on the look out for the elusive yammy 3pot 90

[Navman]

Brig Eagle 6, Suzuki 150, 1 person, 120l fuel, 40kts.
Not twitchy at that speed (but I wouldn't like to hit a wave/wake)

[Miller]

Ribtec 655 with verado 200, getting about 43kts trimmed up..Has a house brick console and screen that slows me down.

It used to have an opti 175 and no screen and we maxed that at 50kts on a flat calm day.

[Jon Tallis]

Humber 5.8 Destroyer, Yam 150 HPDI, 43kts @ full taps 2 people up and full tank on flat water

[Weazle]

Osprey Seaharrier 1998 660



Suzuki DF225 2004



Half fuel tank 3 persons on board not a clean bottem

16x23p Zuke prop

53 knots

[Jbooth]

Just sold an Aircraft 7.8, ‘rude etec 225 39kts, very under propped to carry lots of people and gear.
New boat is a 7m Solent and 225 Merc opti. 23” 4 blade stainless prop. Putting her in the water for the first time today so will report findings later 😁

[DeltaTango]

Pacific 22, plated at 6.5m but measures way longer
Anti fouled hull
Suzuki df300 16x21.5 prop
2 up full with 320l fuel, 2 anchors, radar, 2 batteries ect
47.8 knots @ 5800rpm

[J.W.W.]

Avon SR4.7, F60 Mercury, 36kn

[Orkney1]

Humber 7 ocean pro, 100lt 2 people with 1.7 diesel Merc 120hp 31knts

Same boat 200lt fuel 2 people 2.5 ford tdi supposed to be 130hp but we estimated it was only making 90hp (believed to still be a van spec engine that had been marinised). Very slow to plane and made 29knts before it dropped a valve lol

Unknown make of rib 5.3m mariner 60hp 4 stroke. 30l fuel. One pilot. 32.5knts which I thought very good for only 60hp

[MIKEA63]

Originally Posted by brucehawsker

I am looking to build a dataset of real (2 way GPS measured with and aganist tide averaged, 2 adults on board) top speed (wide open throttle) attained by Ribs in the popular 5M to 6.5M range. To start off:

Farfetched - Solent, 6.5M, 150 opti, goes between 42 and 45 knots, depending on fuel level.

Look forward to amny answers. Please, no bragging, I am genuine interested in the true real world answers.

Thanks

Bruce

Tornado 6.5 metre with Evinrude Etec 175hp, 2 adults 1 dog 1/2 tank of fuel (approx 60 litres ) Firth of Forth in winter flat calm, scraped 51 knots against tide & 53 knots with.

[davej]

Tornado5,5m with Yam 115 2S top speed with three adults and full tank 43mph on calm water

[marbra]

2017 Zodiac 6.5 Pro Open with 150 Yamaha. Two in boat 2/3 fuel. Topped out at 42 knots.