5M to 6.5M Ribs - Speed Survey

[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

[Mouldy]

Delta 5.5m 90 hp mercury 2 stroke, 2 uyp, approx 30l fuel load
2 way average 34.9knts

[brucehawsker]

Thanks Mouldy. More please!!!

[ashbypower]

Blue C 5.5m XS, 3 up, Opti 90hp 80 Liters fuel, 2 way av 37.6Kn.

Brian

[brucehawsker]

Thanks Brian - come on you guys - there must be more players who look at their speed on GPS occasionally!

[Kernow Buoy]

Ribtec 5.35 Evinrude 90, 38 kts 4 up, 40 kts 2 up half fuel load

[brucehawsker]

Thank you. Let's have some 6.5M replies!

[Millermob]

Avon 620, 4 up, full tank of fuel, 43.7 knots at WOT

[BogMonster]

Humber Destroyer 5.8, Johnson 115 with a 17" prop
1 fat person
about 75L fuel
max speed ever recorded on GPS 36.1kt
normally won't get past about 35.4/35.5 so assume the above may have been following tide

Getting a 19" prop so will be interesting to see if that makes any difference as the engine feels like it could give more.

I also discovered recently that the engine (which is a FastStrike variant) still has the running in restrictor fitted so I could get another 500rpm if I could figure out how to chisel that off, that and a 19" prop might see the hectic side of 40

[Donnie144]

Mako 6.5 with twin 90 Tohatsu full fuel 2 people 46 MPH @ 4300 RPM. Motors only have 6 hours on them and need to be reproped.

[stedj]

tornado 5.5m 2up no tide 40ltrs 23pitch ss 44 kts on gps yam115 2 stroke quite calm water 5,500wot

[Erin]

Prosport 5.85m, Suzzy 90, 4 light people, 19" prop and say 10 gals fuel and flat calm... 37 knots. Never managed to better it!

[oogopach]

Solent 6.5mtr Etec 200HO.

2 up force 3 full fuel 200ltrs engine at half trim wot 52knts

One up flat clam 200ltrs fuel 59 knts fully trimmed just prop in water... scary stuff!

Both two way and both on GPS

[Ezgoing]

Driver Only

Approx 100ltrs fuel
200Yam 2 stroke WOT
Flat water. Very cold weather.
Trimmed right up
Gps @ 46 Knots

[CJL]

Ribtec 585 with Opti 135
Fully fuelled 132 litres
+ Ton of gear
2 on board
44 knots

Also a Humber 5.5 with Opti 150
Fully fuelled 100 litres
2 on board
52 knots

and finally

Delta 6.7 with OMC / MOD 140 oil injection
Fully fulled 200 litres
three on board
34knots and my wallet getting lighter all the time!

Chris

[BogMonster]

Originally Posted by stedj

tornado 5.5m 2up no tide 40ltrs 23pitch ss 44 kts on gps yam115 2 stroke quite calm water 5,500wot

that's interesting - hell of a lot faster than mine for similar size/hp!

be interesting to see how mine goes with coarser prop on - maybe I should have gone for a 21 if you are running a 23 - how well does it go?

[swginn]

XS-600 / Merc Optimax 150XL (25" shaft)

3 slim students (full of Murphys though!! ), full 110l tank, 3.2 trim (Opti), 21" Laser II, flat like glass - 2way GPS readings between Bushe's Bar, Baltimore and The Jolly Roger, Sherkin Island : 50.7kts

Total time from one Murphys to the next: 10 mins!!

[timboli]

Humber 5.7 assault,yam 100hp 41 knots,one person,full of fuel

[robin]

Ribcraft 585, suzuki df140, fullish tank, one person flat water, little tide, 42.2 knots (photo taken at a lower speed for safety reasons before anyone mentions the trim etc etc etc)

She has done 42.9 since then but no camera.

[Alice]

A friend has a 6.5 Vipermax with a 150 Opti. That'll pull 40knts dead with a 19"P prop and 43/44 with a 21"P.