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Old 04 September 2016, 02:15   #1
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Country: UK - England
Town: Ipswich
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Outboard Trim Position

Hello all

I am new to this forum but not new to boating. I have a few speedboats all with Power Tilt and Trim outboards or inboards. In order that I can have a little fun on the water on my own I have bought a little 3.4 m Valiant Rib with a nice mariner 15 4 stroke on the back. This is my first boat without power trim. This little boat planes well at about 19 knots but I was wondering if the outboard is set to the best position. Is there a procedure/routine which is best for setting this up. I have a little Garmin on her (Stryker 4) so can see GPS speed.

She goes very well but any extra few knots would be appreciated

Many thanks

Dennis
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Old 04 September 2016, 02:39   #2
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Much the same as you'll have done with your previous boats.
Check that the engine is correctly fitted & of appropriate shaft length then try the pin in its various positions until you find the one that gives you best performance with your normal load in its normal position.
If it's tiller steered you'll find that your position in the boat can have a significant effect so you may want to move about a bit or consider a tiller extension.
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Old 04 September 2016, 03:12   #3
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Thanks for the reply. The boat has a centre console and is set up for remotes
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Old 04 September 2016, 12:04   #4
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I just checked the pin position and it is on the hole nearest the transom. I would think that this might be pushing the nose of the boat down a little I think I will try it on the next one out


Dennis
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Old 04 September 2016, 12:10   #5
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Country: UK - England
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Yep I would try the second hole been the one mostly for me

Cheers
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Old 05 September 2016, 13:45   #6
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Country: UK - England
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Posts: 304
Put it in the second hole and it is better now. I also get another 1.5 knots with it here


Dennis
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