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Old 03 September 2008, 17:23   #11
MrT
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Country: UK - England
Town: Poole, Dorset
Boat name: Honwave 3.8 Air-V
Make: Honda
Length: 3m +
Engine: Mariner 15
Join Date: Aug 2008
Posts: 25
Hi dirtrider212002,

In 2001 i bought a wetline SIB, but couldnt decide whether to get the 290 or the 310. the 290 was rated at 10hp, the 310 at 15hp, and at the time i didnt have an engine. Money was tight and there was 100 difference in the cost, so the chandlers let me take both home to decide.

Once inflated, there was actually only about 3 inches difference in the length, so I went for the cheaper option, and bought an old Mariner 15 which i beleive is a re-badged yamaha. It is exactly the same size and weight as the 9.9 which my friend has. I have just upgraded to a Honwave 3.8 with air v floor, and am still using the same engine so I'm glad i got the 15hp.

I will say however that I bought the 290 with an inflatable floor under which was the inflatable keel, and the first time i opened up the engine, the transom kicked in at the bottom, and the floor started to buckle up so i bought a ply floor for it, and put the inflatable floor on top of it. Never had any problems after that!

I have since realised that in all the years I had the 290, I dont think that I ever had it inflated to the correct pressure, as the high speed inflator I was sold at the time for about 70 only went up to about 0.18 Bar when it should have had 0.25 Bar. With the correct pressure it may have been OK with the inflatable floor, who knows?

If I was you I would go for the Yamaha 15, but be careful-remember you dont have to open it up all the way!

I hope that sharing my experience helps, All the best.
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Old 04 September 2008, 04:32   #12
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Country: UK - England
Town: Worcestershire
Boat name: Not Yet Named
Make: Avon SR 4
Length: 4m +
Engine: 40 HP Yamaha Autolub
Join Date: Sep 2001
Posts: 600
I agree with Mr T. I have been researching SIBs for some time now looking at using one for diving - so weight to engine power and planing are key issues. The Quicksilver 380 is rated to 25 HP - but many I have looked at have had 30HP 32 Strokes - the main issues seems to be the weight - and many seem to have been downrated due to the weight of modern 4 strokes. Having sadi than many dealers will not sell you a package with an engine above the recommended - but they will sell you the boat and engine separately. Also, you dont need to full open the engine up if only one or two on board, but it gives the power if needed. As with all things though you have to accept responsibility if you go outside of the manufacturers recemmendations.
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Old 04 September 2008, 12:12   #13
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Country: Other
Town: Lima-Peru
Boat name: Nautile
Make: Sea Rider Boats
Length: 4m +
Engine: Tohatsu 18 /30 HP
Join Date: Sep 2007
Posts: 1,706
Quote:
Originally Posted by GraemeCooper View Post
I agree with Mr T. Also, you dont need to full open the engine up if only one or two on board, but it gives the power if needed. As with all things though you have to accept responsibility if you go outside of the manufacturers recemmendations.
Outside yourself responsabilities, you only need to full throttle to move bigger loads, more buddies and plane faster, once on plane, reduce throttle to 3/4 cruise speed, ideal to get under way fast and have fuel economy.

Happy Sibbing
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