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15-10-2013, 05:55 PM
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#1
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Registered User
Join Date: Aug 2013
Posts: 39
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If you have 5 mins spare some gearboxe advice would be great
Hi there fellow boat mad people
Ive just purchased a bull noise 15" gearbox off a mate of mine and have a standard one too to try as seen in picture can someone tell me the fores and againsts of running each gearbox on a B-22 Backdraft please
Niall
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15-10-2013, 10:21 PM
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#2
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Registered User
Join Date: Apr 2011
Posts: 116
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Just test both of them and find out yourself dude, all boats and set ups are different!
Quote:
Originally Posted by Niall.Bougourd
Hi there fellow boat mad people
Ive just purchased a bull noise 15" gearbox off a mate of mine and have a standard one too to try as seen in picture can someone tell me the fores and againsts of running each gearbox on a B-22 Backdraft please
Niall
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15-10-2013, 11:22 PM
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#3
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Registered User
Country: Guernsey
Occupation: Engineer
Interests: Restoration
Cruising area: Channel Islands & northern French coast
Join Date: Jan 2009
Posts: 154
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use the dildo box but remember to lube up
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16-10-2013, 01:08 PM
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#4
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Registered User
Country: Guernsey
Occupation: Postie
Interests: Heavy Heavy Metal
Boat name: Slayer II, Slayer, Pen15
Boat make: Phantom 19G-R, Bernico F2 Extreme, Ring 15
Engines: Evinrude 115HO, Yam 90
Cruising area: Channel Islands
Join Date: Aug 2009
Posts: 1,460
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Wallby's right, just try anything and everything until you find a set up that you get on with.
Are both boxes the same ratio?
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16-10-2013, 01:24 PM
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#5
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Registered User
Country: UK
Location: london
Occupation: Powerboat Skipper
Interests: Boats , bikes!
Boat name: Renegade
Boat make: GPV-RENEGADE
Engines: 150 HO etec
Cruising area: Thames, south coast, anywhere!
Join Date: Dec 2008
Location: london
Posts: 2,330
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Mind if I ask where you got the one on the right from? My dad used a box that shape in ocr years ago
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16-10-2013, 01:59 PM
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#6
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The Doc
Join Date: Mar 2004
Posts: 8,291
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Quote:
Originally Posted by Renegade
Mind if I ask where you got the one on the right from? My dad used a box that shape in ocr years ago
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and it does look a bit "YEARS AGO"
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16-10-2013, 02:18 PM
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#7
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Registered User
Country: UK
Location: london
Occupation: Powerboat Skipper
Interests: Boats , bikes!
Boat name: Renegade
Boat make: GPV-RENEGADE
Engines: 150 HO etec
Cruising area: Thames, south coast, anywhere!
Join Date: Dec 2008
Location: london
Posts: 2,330
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If I remember correctly dad and clive worked on the shapes and in the end had great results on the Argo and then sold it to Chris Bryant
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Im re branding pepper spray as Arsehole Repellant.im going to make a fortune.
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16-10-2013, 04:21 PM
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#8
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Registered User
Country: Channel Islands
Location: Guernsey
Join Date: Sep 2013
Location: Guernsey
Posts: 37
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Quote:
Originally Posted by Wallby202
Just test both of them and find out yourself dude, all boats and set ups are different!
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We would like to try both but the one on the left has a 20" drive shaft and is not ours to keep, and the one on the right is 15" drive shaft that will fit the setup we have got on the backdraft, just thinking is it best to cut off the right hand gearbox nose cone to then make it the same as the left hand gearbox or leave well alone. Cheers Ivan
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16-10-2013, 04:26 PM
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#9
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Registered User
Country: Channel Islands
Location: Guernsey
Join Date: Sep 2013
Location: Guernsey
Posts: 37
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Quote:
Originally Posted by Renegade
Mind if I ask where you got the one on the right from? My dad used a box that shape in ocr years ago
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He got it from a chap in Guernsey that was using it on his B23, Now we are hoping it will work on the Backdraft.
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16-10-2013, 04:52 PM
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#10
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Registered User
Country: UK
Location: london
Occupation: Powerboat Skipper
Interests: Boats , bikes!
Boat name: Renegade
Boat make: GPV-RENEGADE
Engines: 150 HO etec
Cruising area: Thames, south coast, anywhere!
Join Date: Dec 2008
Location: london
Posts: 2,330
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I think it may be my old mans old box
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Im re branding pepper spray as Arsehole Repellant.im going to make a fortune.
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16-10-2013, 05:16 PM
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#11
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Registered User
Country: england
Location: surrey
Engines: none at the mo
Cruising area: south coast
Join Date: Dec 2011
Location: surrey
Posts: 472
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gearbox
Quote:
Originally Posted by Niall.Bougourd
Hi there fellow boat mad people
Ive just purchased a bull noise 15" gearbox off a mate of mine and have a standard one too to try as seen in picture can someone tell me the fores and againsts of running each gearbox on a B-22 Backdraft please
Niall
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just put it on and use it , cone on or off wouldn't of thought it would make a noticeable difference to be honest
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16-10-2013, 05:34 PM
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#12
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Registered User
Country: UK
Location: london
Occupation: Powerboat Skipper
Interests: Boats , bikes!
Boat name: Renegade
Boat make: GPV-RENEGADE
Engines: 150 HO etec
Cruising area: Thames, south coast, anywhere!
Join Date: Dec 2008
Location: london
Posts: 2,330
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Quote:
Originally Posted by deepvee
just put it on and use it , cone on or off wouldn't of thought it would make a noticeable difference to be honest
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It will make a difference for sure.
__________________
Im re branding pepper spray as Arsehole Repellant.im going to make a fortune.
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16-10-2013, 08:24 PM
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#13
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Registered User
Country: Channel Islands
Location: Guernsey
Join Date: Sep 2013
Location: Guernsey
Posts: 37
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Quote:
Originally Posted by Renegade
It will make a difference for sure.
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Do you know if it will be a good or bad difference, we are hoping to try out a jackplate at some point as well, this may or may not be a good thing for the Backdraft.
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16-10-2013, 08:53 PM
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#14
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Registered User
Country: Guernsey
Occupation: Postie
Interests: Heavy Heavy Metal
Boat name: Slayer II, Slayer, Pen15
Boat make: Phantom 19G-R, Bernico F2 Extreme, Ring 15
Engines: Evinrude 115HO, Yam 90
Cruising area: Channel Islands
Join Date: Aug 2009
Posts: 1,460
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I think you'd have trouble with the dog's dick box hitting the transom without a jackplate or setback of some kind, seem to remember it being very close to the bracket on Jacques' B23
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16-10-2013, 09:08 PM
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#15
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Registered User
Country: Channel Islands
Location: Guernsey
Join Date: Sep 2013
Location: Guernsey
Posts: 37
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Quote:
Originally Posted by Paul E
I think you'd have trouble with the dog's dick box hitting the transom without a jackplate or setback of some kind, seem to remember it being very close to the bracket on Jacques' B23
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Yes you are right the dog's dick dose hit the transom, that's one of the reasons to use a jackplate, or we will have to cut off the dog's dick,
I just don't know whether or not to cut the dog's dick off or not, is it worth keeping.
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16-10-2013, 09:08 PM
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#16
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Registered User
Country: UK
Location: london
Occupation: Powerboat Skipper
Interests: Boats , bikes!
Boat name: Renegade
Boat make: GPV-RENEGADE
Engines: 150 HO etec
Cruising area: Thames, south coast, anywhere!
Join Date: Dec 2008
Location: london
Posts: 2,330
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Obviously I don't know the dimensions but dad ran his on a 21 Argo with no transon lift. The way I see it some one has adapted a perfectly good mercury box and left it like it. But i imagine it could be boat sspecific. Try it mate
On closer inspection it looks slightly different to what i remember. But hey good luck
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Im re branding pepper spray as Arsehole Repellant.im going to make a fortune.
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16-10-2013, 09:19 PM
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#17
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Registered User
Country: Channel Islands
Location: Guernsey
Join Date: Sep 2013
Location: Guernsey
Posts: 37
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Quote:
Originally Posted by Renegade
Obviously I don't know the dimensions but dad ran his on a 21 Argo with no transon lift. The way I see it some one has adapted a perfectly good mercury box and left it like it. But i imagine it could be boat sspecific. Try it mate
On closer inspection it looks slightly different to what i remember. But hey good luck
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Ok thanks, we best get looking for a jackplate then.
Cheers
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16-10-2013, 09:59 PM
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#18
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Registered User
Country: Ireland
Location: Dublin
Occupation: Boatbuilder
Boat make: Hydrostream V-king, 650SS OCR ,Ring 21, Ring 18, Phantom 18.
Engines: 300Hp Mercury 2.4, 130 Yamaha, Bridgeport EFI, XR6, Merc 200.
Cruising area: Malahide, Dublin
Join Date: May 2004
Location: Dublin
Posts: 1,803
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Id be looking for a 15" driveshaft first!
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17-10-2013, 08:01 AM
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#19
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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 deepvee
just put it on and use it , cone on or off wouldn't of thought it would make a noticeable difference to be honest
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Just out of interest on what experience to you make this comment on?
We tried a couple of designs on our Class III boat and it made a significant difference to the handling all in a good way - why else would people go to the trouble of making these boxes?
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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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17-10-2013, 08:13 AM
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#20
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Moose
Country: Jersey C I
Location: Jersey
Occupation: Thread stripper
Interests: Winding up Donkeys
Boat name: Venom
Boat make: 1990 Phantom(what else)21
Engines: Mariner 225 opti
Cruising area: Channel Islands/France
Join Date: Jul 2008
Location: Jersey
Posts: 111
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Roy Smith used the dog's dick style box on his B-23 very successfully. If I remember correctly he got the Royal Navy involved in its design. The idea was along the lines of 'that's the shape of a submarine so there must be a reason for it'!
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