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Old 30 July 2012, 16:27   #21
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Originally Posted by wxmrich View Post
Yea I've seen them on other SIBs and wondered if that's what they're for.

I'll try the blocks of wood to raise the transom an inch or so and if it's still spraying I'll look into that.

Saying that, the majority of the water appeared to be coming from directly between the clamps..
Which hole have you got your trim pin in? Sure its not just trimmed too shallow?
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Old 30 July 2012, 18:40   #22
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Originally Posted by Salty

Which hole have you got your trim pin in? Sure its not just trimmed too shallow?
I've just tried it flat against the transom (first pin, loads of splash)..

Then 2nd hole (slightly less splash but not much better).

Wasn't sure about trying it any higher but I suppose it'll do no harm right..?
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Old 30 July 2012, 19:41   #23
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I've just tried it flat against the transom (first pin, loads of splash)..

Then 2nd hole (slightly less splash but not much better).

Wasn't sure about trying it any higher but I suppose it'll do no harm right..?
Yeah wont harm to try.

I run mine on the second or third hole (the lowest being number 1) when im on my own and on the first pin when theres two of us on it
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Old 30 July 2012, 20:17   #24
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Tohatsus do seem to throw up a bit of water on some boats more than other types of engine think a lots to do with the flat on the leg

Although I run a long shaft with my sib i I got around a lot of the spray kicking up it by shaping a block of wood and cable tying on the flat of the leg and I also made 2 heavy rubber deflectors on each side above the bottom mounting
There's some photos on the Sib section that I posted a couple of years back somewhere .
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Old 02 August 2012, 15:50   #25
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Tried the outboard again today with an inch block of wood under the clamps.

Really seemed to stop the splashing and hardly any water was poured from the bottom of the boat at the end!

So thanks for the advice on that

On another note, tried on my own for the first time.. Wow, the acceleration is unreal! Sports car like! Topping out at about 25mph on the GPS and a lot of fun.

Also tried with 3 adults, total weight 38 stone.. Still managed 20mph on the GPS! Is this unusually fast for 3 adults?? I expected a big reduction in performance adding the 3rd person but there was hardly any.

Maybe that's the difference between 15hp and 18hp Tohatsus..?
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Old 03 August 2012, 17:30   #26
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Tried the outboard again today with an inch block of wood under the clamps.

Really seemed to stop the splashing and hardly any water was poured from the bottom of the boat at the end!

So thanks for the advice on that

On another note, tried on my own for the first time.. Wow, the acceleration is unreal! Sports car like! Topping out at about 25mph on the GPS and a lot of fun.

Also tried with 3 adults, total weight 38 stone.. Still managed 20mph on the GPS! Is this unusually fast for 3 adults?? I expected a big reduction in performance adding the 3rd person but there was hardly any.

Maybe that's the difference between 15hp and 18hp Tohatsus..?
Where are you doing your sea trials Rich?
Just bought a 25 Yammy to replace my 16 Tohatsu (virtually same weight) Rekon it will hit 30mph?
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Old 04 August 2012, 06:21   #27
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Where are you doing your sea trials Rich?
Just bought a 25 Yammy to replace my 16 Tohatsu (virtually same weight) Rekon it will hit 30mph?
I've been trialling on the Dee, upstream of holt bridge (no speed limit!), there's about 2 miles of slow and deep river with a few straights to open out the throttle. That said, I'm not going to make a habit of using the 2 stroke here, it takes from the tranquility somewhat!

Lightly loaded you're not going to be too far off 30mph I wouldn't have thought.

30mph with my 18hp seems a bit of a mission. I'd like to think with careful weight distribution I'd be able to hit 27mph 1 up. Tiller steering gets a bit sketchy at upwards of 22mph to be honest!
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Old 06 August 2012, 20:10   #28
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Both 2 strokes Tohatsu 15 and 18 HP weights same, 41 KG, so weight on transom not a big issue. If wanting to limit the max speed for other to use that size boat safely you can adjutst stopper A screw some mm in to have less wot throttle range.

Happy Sibbing
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