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14 February 2013, 10:08
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#1
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Member
Country: UK - Wales
Length: under 3m
Join Date: May 2012
Posts: 221
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hi
hi there ive got suzuki suzmar 12ft inflatable boat could i use a long shaft outboard on it????
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14 February 2013, 10:32
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#2
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Member
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,047
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Yes AJ does, see our Poole sib club videos for more details.
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14 February 2013, 10:40
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#3
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Member
Country: UK - Wales
Length: under 3m
Join Date: May 2012
Posts: 221
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so i can use yamaha 15hp long shaft
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14 February 2013, 11:16
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#4
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Member
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,047
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What is the power rating of the sib?
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14 February 2013, 14:38
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#5
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Member
Country: UK - Wales
Length: under 3m
Join Date: May 2012
Posts: 221
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15 i think
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14 February 2013, 16:51
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#6
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RIBnet supporter
Country: UK - England
Town: Warwickshire
Boat name: Impulse
Make: Ribcraft
Length: 5m +
Engine: Suzuki 140
Join Date: Sep 2011
Posts: 1,020
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Give it a go. I asked this question on my 9.8 tohatsu long shaft and some said no. It's fine you may not get top end a couple of knots shy cause u get more drag with a longer shaft in the water. Don't know about the shape of you yam leg but I get a bit of water overflowing in with the long shaft but isn't that bad and I think it is a Tohatsu issue
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14 February 2013, 18:08
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#7
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Member
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,047
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Your sib should use a short shaft as that is what it is designed for, at slow speed it should be ok but don't forget that the leg is longer in shallow water.
If you want to use your boat on the plane obviously you will be putting more strain on the transome and also the trim will be effected so I guess you will need to trim all the way in, but it still may ride high at the bow.
If it's only going to be used on a sib you should really get a short shaft, AJ is only trying a long shaft as he also uses his as an auxiliary engine for his rib.
One more thing, you need to check with your insurance company that everything will be ok and you are covered.
Hope that helps....
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14 February 2013, 18:10
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#8
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Member
Country: UK - Wales
Length: under 3m
Join Date: May 2012
Posts: 221
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i havent got it yet im buyin one ive got a 20hp mariner short shaft is that ok for it
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14 February 2013, 18:11
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#9
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RIBnet supporter
Country: UK - England
Town: Warwickshire
Boat name: Impulse
Make: Ribcraft
Length: 5m +
Engine: Suzuki 140
Join Date: Sep 2011
Posts: 1,020
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Quote:
Originally Posted by luke1979
i havent got it yet im buyin one ive got a 20hp mariner short shaft is that ok for it
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Apologies I thought you had it in which case buy a short shaft it will be much better/easier
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14 February 2013, 18:13
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#10
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Member
Country: UK - Wales
Length: under 3m
Join Date: May 2012
Posts: 221
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ive got mariner 20hp short shaft
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14 February 2013, 18:19
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#11
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Member
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,047
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you will need a 6 -15hp short shaft (so get a 15hp if you can)
have a look at this to see if it is the correct one I think you are talking about a AFL360 with an air floor?
http://www.aliros.ee/assets/suz/suzbroz.pdf
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14 February 2013, 18:20
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#12
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RIBnet supporter
Country: UK - England
Town: Warwickshire
Boat name: Impulse
Make: Ribcraft
Length: 5m +
Engine: Suzuki 140
Join Date: Sep 2011
Posts: 1,020
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Quote:
Originally Posted by luke1979
ive got mariner 20hp short shaft
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You need to be a little careful as your Sib is rated to a 15. Check the maximum engine weight on your Sib plate and check on the manufacturers website the weight of the mariner. Some people including me do go a little over the recommendation. But that recommendation is capacity loading based on weight and stress from the engine on the transom. If it is significantly over you may risk causing damage to the transom or worse watching the engine sink to the sea bed. Only you can decide what is significant!
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14 February 2013, 18:26
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#13
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Member
Country: UK - Wales
Length: under 3m
Join Date: May 2012
Posts: 221
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ok thanks
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14 February 2013, 20:43
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#14
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Member
Country: UK - England
Town: Nuneaton
Boat name: ribbit
Make: ring
Length: 6m +
Engine: opti 150
Join Date: Oct 2011
Posts: 557
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Quote:
Originally Posted by AJ.
You need to be a little careful as your Sib is rated to a 15. Check the maximum engine weight on your Sib plate and check on the manufacturers website the weight of the mariner. Some people including me do go a little over the recommendation. But that recommendation is capacity loading based on weight and stress from the engine on the transom. If it is significantly over you may risk causing damage to the transom or worse watching the engine sink to the sea bed. Only you can decide what is significant!
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i may oversize my engine but wouldn`t inform the insurance if i did one thing to remember is the transom will be rated to a 4 stroke (on a modern sib) so if you go for a 2 stroke i`m guessing you you could be ok .. you don`t have to turn that dial
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