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23 August 2018, 21:18
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#1
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RIBnet Supporter
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,684
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willk's Law #2
The fuel tank volume on a rib will approximately equal the recommended petrol engine power, litres v HP.
Your thoughts pls?
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I'm sorry, but there IS no Mars Bar.
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23 August 2018, 21:31
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#2
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Member
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,238
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Our internals are 140L and we have a 175hp, max 200hp. The Humber 6.3s are often seen with a 150 though so...
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23 August 2018, 22:33
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#3
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RIBnet admin team
Country: UK - England
Town: The wilds of Wiltshire
Boat name: Dominator
Make: SR5.4
Length: 7m +
Engine: Yam 85
MMSI: 235055163
Join Date: Jul 2005
Posts: 13,054
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225 and 225 here,though the boats are often seen now with 250.
I'd noticed it too.
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23 August 2018, 23:01
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#4
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Member
Join Date: Jun 2010
Posts: 2,934
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225l and 250hp....pretty close.
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23 August 2018, 23:10
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#5
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Member
Country: UK - N Ireland
Town: Armagh
Make: Xs
Length: 6m +
Engine: 150 optimax
Join Date: Aug 2017
Posts: 145
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160L and 150hp [emoji848]
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23 August 2018, 23:41
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#6
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Member
Country: UK - England
Town: penzance
Boat name: not named
Make: ski boat
Length: 5m +
Engine: 150 HPDI
Join Date: Sep 2013
Posts: 224
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50L & 150Hp, but I like it hard & fast!
Time to introduce another law very pertinent to boat mending:
Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
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24 August 2018, 02:55
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#7
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RIBnet admin team
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: Tohatsu 30HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 11,622
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willk's Law #2
I think as Rules of Thumb go you are not far off (crudely at WOT it will give you over 2.5 hrs and likely >4hrs cruising without refuelling)
What was Law#1 though?
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24 August 2018, 07:05
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#8
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Member
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 11,888
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willk's Law #2
180l 140hp; better looking at it than for it
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Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4: Don't feed the troll
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24 August 2018, 07:15
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#9
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Member
Country: UK - Scotland
Town: Girvan & Tayvallich
Boat name: Breawatch
Make: Ribcraft
Length: 5m +
Engine: Mercury 150 F/stroke
MMSI: ex directory!!
Join Date: Sep 2008
Posts: 6,203
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188L 150hp
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jambo
'Carpe Diem'
Member of the ebay Blue RIB cover club
Member of SABS ( Scottish West Division)
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24 August 2018, 07:42
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#10
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Member
Country: Germany
Town: StPetersburg Russia
Boat name: Ocean Devil
Make: Scorpion 8.6m
Length: 8m +
Engine: Yanmar 315hp
MMSI: 211579640
Join Date: Aug 2009
Posts: 646
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220l / 275hp
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soon Evinrude ETEC G2 150H.O.
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24 August 2018, 08:22
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#11
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Member
Country: UK - England
Town: Hamble
Boat name: Black Bear
Make: Ribeye A683
Length: 6m +
Engine: Yamaha F225
MMSI: 232039276
Join Date: Aug 2016
Posts: 294
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120l - 150hp
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________________
Steve
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24 August 2018, 09:12
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#12
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Member
Country: UK - Wales
Town: N Wales Chester
Boat name: Mr Smith
Make: Humber
Length: 6m +
Join Date: Feb 2009
Posts: 5,238
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2.5m Rib - 10L with 8hp
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24 August 2018, 09:32
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#13
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Member
Country: UK - England
Town: Cambridgeshire
Boat name: Nimrod II
Make: Aerotec 380
Length: 3m +
Engine: Yam 15 Tohatsu 9.8
Join Date: Nov 2007
Posts: 8,305
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I wondered about us sibbers... but yep the rule broadly follows. Happy with 12l tank for 10hp and always used 25l for 20hp.
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24 August 2018, 09:59
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#14
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Member
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Excel 435
Length: 4m +
Engine: Suzuki Outboard/25/4
Join Date: Oct 2011
Posts: 7,454
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when i had the rib 70ltr fixed tank for 90 hp 50 ltr in two loose tanks coupled up under suicide seat
sibbing
43ltr for 25hp 2.9 miles /ltr carrying 81 ltr for our skye trip of 160 miles end of the month with pikey soon as look at than for it
suzuki state 3.9 mils / ltr but i get 2.9
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24 August 2018, 12:04
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#15
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Member
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,339
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Official capacity of 52 lt but filled to the neck the tank holes circa 58 lt on a 60 hp etec
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24 August 2018, 12:37
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#16
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Member
Country: UK - England
Town: Wirral & Caernarfon
Boat name: That's Enuff
Make: Revenger & Avon SR4
Length: 7m +
Engine: Honda 150HP & 50HP
Join Date: Jul 2011
Posts: 4,408
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120l - 150hp and 90l - 50hp
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Member of S.A.B.S. (Wirral Division)
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24 August 2018, 13:42
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#17
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Member
Country: UK - England
Town: Poole
Boat name: El Mono
Make: Ribtec 9M
Length: 9m +
Engine: Yanmar 315/Bravo III
Join Date: Aug 2012
Posts: 813
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315hp (diesel) and somewhere in the region 350-400l....
I've never emptied it completely to test the exact volume!
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24 August 2018, 15:01
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#18
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Member
Country: UK - England
Town: Ipswich
Boat name: Jammy Dodger
Make: Avon Adventure 7.20
Length: 7m +
Engine: 200 Yamaha
Join Date: Dec 2008
Posts: 365
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200L - 200HP
100L - 60HP
12L - 50HP
25L - 15HP
Almost!
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24 August 2018, 15:32
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#19
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Member
Country: UK - England
Town: Bristol
Boat name: Relentless
Make: Ribcraft
Length: 5m +
Engine: Mariner 125hp
MMSI: 232014453
Join Date: Jan 2013
Posts: 4
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140l - 125hp
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24 August 2018, 15:42
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#20
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Member
Country: UK - England
Town: Porchfield
Boat name: Katie
Make: Stingher
Length: 10m +
Engine: Verado 350 x 2
Join Date: Jan 2011
Posts: 696
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550 litre / 700hp
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White Noise
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