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04-06-2006, 10:20 PM
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#1
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Dave
Country: UK
Location: Scotland
Occupation: Offshore Seismic Surveyor
Interests: Boats of any shape or size
Boat name: Miss-T
Boat make: Ring 21B
Engines: 200 XR2
Cruising area: Loch Earn
Join Date: Feb 2006
Location: Scotland
Posts: 239
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Offset outboard
During my last thread reguesting 'trim tab info' I stated that my outboard was slightly offset to starboard. One of the replies I received stated that this was NOT the way to go. Can anyone tell me why.
Thought the idea of the offset engines was to help counter the torque put out by the bigger engines/props.
Is this correct or has the thinking behind this changed now-adays?
I believe the engine and hull are part of the original combination/setup as the were little stickers on both units from some outfit down in Chorley. So the offset has been there since day one.
Just interested as to whether I should look at having the engine remounted on the centre line. One of the winter jobs is to have the engine off to repair the manual jacking plate so I could consider doining then.
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04-06-2006, 10:25 PM
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#2
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Registered User
Country: UK
Location: Weston Super Mare
Occupation: Electrical Engineer
Join Date: Mar 2004
Location: Weston Super Mare
Posts: 6,351
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Mines in the middle, if you put all the heavy stuuf on the starboard side then its the same as offsetting the engine
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04-06-2006, 10:25 PM
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#3
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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always a great debate this one,you will find some for it and some against it,if your boats going fine and your happy with it leave it where it is.
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Taurus excreta cerebrum vincit
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04-06-2006, 11:09 PM
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#4
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Traveling
Country: UK
Location: Alderholt
Occupation: Aerospace
Boat name: T/T D2S
Boat make: Midas 27' Cat, Argo 16 Cat. Avon Rib Thingy
Engines: Merc 280-ROS -JSRE,65Xs, 75 Stinger, Yam 60
Cruising area: Any Seedy Bar
Join Date: Sep 2004
Location: Alderholt
Posts: 4,225
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Run it see what the boat does , Flat calm running LH down or twisting left when Airborne. Dont knee jerk a reaction.
As before depends on use & how hard you push.
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04-06-2006, 11:25 PM
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#5
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hello
Join Date: Mar 2004
Posts: 2,739
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Yup if it goes okay as it is leave it. Mines offset and it goes okay so I left it !!!
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12-06-2006, 06:50 PM
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#6
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Registered User
Country: England
Location: Crayford, Kent.
Occupation: Electrical gezza!
Interests: Petrolhead
Boat name: Wayne Kerr
Boat make: Phantom xl
Engines: Mercury 2.5, 200(ish)
Cruising area: Essex, Hampshire, Mediterranean
Join Date: Sep 2004
Location: Crayford, Kent.
Posts: 1,199
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I agree with Burty on this one!
If there are any race meetings (Ski / OCR) near you, go along & have a buchers for yourself !!!!
Whoops ,,,,,, just noted your location!
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12-06-2006, 06:59 PM
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#7
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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for what its worth most marshans i know are all offset including mine
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Taurus excreta cerebrum vincit
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12-06-2006, 07:11 PM
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#8
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Registered User
Country: England
Location: Crayford, Kent.
Occupation: Electrical gezza!
Interests: Petrolhead
Boat name: Wayne Kerr
Boat make: Phantom xl
Engines: Mercury 2.5, 200(ish)
Cruising area: Essex, Hampshire, Mediterranean
Join Date: Sep 2004
Location: Crayford, Kent.
Posts: 1,199
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If you build a pushbike, do you offset the rear wheel to counter the torque from the pedals?
Just a thought mate.
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12-06-2006, 07:14 PM
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#9
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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when was the last time you peddled at 6000 revs of the wheel then?
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Taurus excreta cerebrum vincit
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12-06-2006, 07:23 PM
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#10
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Registered User
Country: England
Location: Crayford, Kent.
Occupation: Electrical gezza!
Interests: Petrolhead
Boat name: Wayne Kerr
Boat make: Phantom xl
Engines: Mercury 2.5, 200(ish)
Cruising area: Essex, Hampshire, Mediterranean
Join Date: Sep 2004
Location: Crayford, Kent.
Posts: 1,199
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Quote:
Originally posted by michaelcaine
when was the last time you peddled at 6000 revs of the wheel then?
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Remember it well, "me knees were alight"!
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12-06-2006, 07:24 PM
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#11
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Registered User
Country: uk
Location: brighton
Occupation: CABINET MAKER
Interests: SPEED BOATS,MOTO G.P
Boat name: MOTIVATION
Boat make: MARSHAN 21
Engines: AINT GOT ONE!!
Cruising area: sea
Join Date: Sep 2005
Location: brighton
Posts: 1,223
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Taurus excreta cerebrum vincit
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12-06-2006, 09:21 PM
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#12
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hello
Join Date: Mar 2004
Posts: 2,739
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Quote:
Originally posted by Wayne Kerr
I agree with Burty on this one!
If there are any race meetings (Ski / OCR) near you, go along & have a buchers for yourself !!!!
Whoops ,,,,,, just noted your location!
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I do too, all I was saying is if he's not after every last bit of speed and it goes okay as it is then why swiss cheese the transom!!!
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12-06-2006, 11:21 PM
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#13
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Dave
Country: UK
Location: Scotland
Occupation: Offshore Seismic Surveyor
Interests: Boats of any shape or size
Boat name: Miss-T
Boat make: Ring 21B
Engines: 200 XR2
Cruising area: Loch Earn
Join Date: Feb 2006
Location: Scotland
Posts: 239
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Thanks for the input gents, taking in to account what you have said I think I'll leave the engine where she is - I have enough other jobs to do on her without making myself more work
We used to have the Speed Ski championships up at Loch Earn (my local water) many years ago but these have since moved on, so we dont see so many race prepared rigs up my neck of the woods any more. Certainly now they have the speed restrictions on parts of Loch Lomond the chances are seeing them are getting less.
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15-05-2014, 09:58 PM
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#14
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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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They still have Ski Racing on Loch Earn !! Fairly sure they were there last year !!
Maybe not just seen bit about club burning down !
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If Only
National Outboard Immersed Propeller Mono Record 103mph
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15-05-2014, 10:57 PM
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#15
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Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
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You just replied to a 8 year old thread
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15-05-2014, 11:13 PM
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#16
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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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So I did !! Got muddled up with other engine offset thread.
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If Only
National Outboard Immersed Propeller Mono Record 103mph
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16-05-2014, 02:04 AM
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#17
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Captain slow
Country: england
Location: surrey
Boat name: terminal velocity no.120
Boat make: phantom20
Engines: 2.5efi smillin jack
Cruising area: solent
Join Date: Mar 2006
Location: surrey
Posts: 478
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Bob, and you talk to me about keeping up!LOL!
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07-06-2014, 12:02 AM
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#18
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Dave
Country: UK
Location: Scotland
Occupation: Offshore Seismic Surveyor
Interests: Boats of any shape or size
Boat name: Miss-T
Boat make: Ring 21B
Engines: 200 XR2
Cruising area: Loch Earn
Join Date: Feb 2006
Location: Scotland
Posts: 239
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Quote:
Originally Posted by OCRDA
They still have Ski Racing on Loch Earn !! Fairly sure they were there last year !!
Maybe not just seen bit about club burning down !
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The old "club house" is definately not looking so good these days .......
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