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15-08-2012, 09:05 PM
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#1
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Martyn W
Country: uk
Location: Guernsey Channel island
Occupation: wholesale food sales
Interests: Burning fuel!!!
Boat name: The Magician, A Fine Pair
Boat make: ring20b, chriscraft stinger 26
Engines: merc XR2, 2X AQ311B 5.7's
Cruising area: channel islands
Join Date: Jul 2009
Location: Guernsey Channel island
Posts: 284
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BackDraft 22 with a 260efi?
anyone got any idea on top speed of a BackDraft 22 with a 260efi or is it better rigged with a 200xr2?
i believe the boat was laid up for 1.3 litre class
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15-08-2012, 09:08 PM
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#2
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Registered User
Country: Guernsey Channel Isles
Location: West Coast
Occupation: Hotelier
Interests: Powerboat racing
Boat name: Vodkatini,Cap Camarat,Easy RiderSuper Rider & Hirrondelle
Boat make: Phantom 21,Jeaneau 925 Avenger19.Lorne Campbell Slipstream Tremlett 21.Tigershark 21
Engines: Volvo 5 litre,Merc 115 Tower,Twin 250 Suzukis and 145 Mercruiser LX
Cruising area: Channel Islands and French coast
Join Date: Jan 2009
Location: West Coast
Posts: 612
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10mph slower then a B23 ! 
__________________
Guernsey - The home of offshore powerboat racing
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15-08-2012, 09:09 PM
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#3
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Martyn W
Country: uk
Location: Guernsey Channel island
Occupation: wholesale food sales
Interests: Burning fuel!!!
Boat name: The Magician, A Fine Pair
Boat make: ring20b, chriscraft stinger 26
Engines: merc XR2, 2X AQ311B 5.7's
Cruising area: channel islands
Join Date: Jul 2009
Location: Guernsey Channel island
Posts: 284
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so that would be 40mph faster than the slipstream then simon?? 
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15-08-2012, 09:40 PM
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#4
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Registered User
Join Date: Aug 2007
Posts: 115
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Just to give you a ballpark range there's a heavy layup (400kg) 22' Ocke that runs a 280 at 86mph+. The 23s run low-mid 90s. I'd stick to an XR2 on a the Backdraft...
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15-08-2012, 11:02 PM
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#5
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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If it was built for 1.3 then fit a 1.3
__________________
If Only
National Outboard Immersed Propeller Mono Record 103mph
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16-08-2012, 08:20 AM
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#6
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BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
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Quote:
Originally Posted by OCRDA
If it was built for 1.3 then fit a 1.3
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+1!
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Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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16-08-2012, 09:51 AM
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#7
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Le Cat
Country: France
Location: Paris
Occupation: Computer Sales
Boat name: Le Cat
Boat make: Argo Cat 18
Engines: Mercury 2.4EFI
Cruising area: Paris
Join Date: Mar 2004
Location: Paris
Posts: 753
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In the US, a 22 footer would have 2 260's... What does she weigh ?
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16-08-2012, 09:54 AM
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#8
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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Bare hull I would expect around 250-300kg (In US around 550-650Lbs)
__________________
If Only
National Outboard Immersed Propeller Mono Record 103mph
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16-08-2012, 10:29 AM
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#9
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BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
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Quote:
Originally Posted by FrenchPhil
In the US, a 22 footer would have 2 260's... What does she weigh ?
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The minumum weight for this class (UIM III B) is 595kg or 1,312 US Lbs which would be complete with residual fuel and no crew. I am sure there are 22' boats capable of taking twin 260's, however if this boat was built for the 1.3 litre class it will have a very shortened life with anything larger on it, in fact it probably shouldn't have a 2 litre 200 hp XR2 on it with some strengthening!
A note about US versus UK boating - the difference in fuel costs means that in the UK we tend towards getting the most speed out of our fuel whilst cheaper fuel in the US means they can go for a bigger bang - I'm sure I speak for many on here when I say that we are quite jealous of the fuel prices - even now!
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
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16-08-2012, 11:55 AM
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#10
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Senior Member
Country: UK
Location: Devon
Occupation: Garage Proprietor
Interests: PowerBoat Racing
Boat name: If Only
Boat make: Bernico F3 OCR, Bernico Prototype Inboard, and some Ribs
Engines: Yamaha Pro V 115
Cruising area: UK, France
Join Date: Jan 2005
Location: Devon
Posts: 3,095
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[QUOTE=Cookee;224360]The minumum weight for this class (UIM III B) is 595kg
Including Crew @ Min weight of 170kg !! + 50kg per mtr over min length !!
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__________________
If Only
National Outboard Immersed Propeller Mono Record 103mph
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