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Old 01-09-2011, 18:51   #1
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Inboard / Outboard 1987 Winner with 200hp Mercruiser Question

Does anybody know what those things are called that attach to the outboard trim that help assist in trimming the boat easier?
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Old 01-09-2011, 18:54   #2
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Re: Inboard outboard 1987 winner w/ 200 hp mercruiser question

Trim tabs? Dolphin fin?
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Old 01-09-2011, 18:54   #3
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Re: Inboard outboard 1987 winner w/ 200 hp mercruiser question

Trim Tabs. Trim tab - Wikipedia, the free encyclopedia
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Old 01-09-2011, 18:55   #4
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Re: Inboard outboard 1987 winner w/ 200 hp mercruiser question

Trim Tabs is correct
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Old 01-09-2011, 19:06   #5
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Re: Inboard outboard 1987 winner w/ 200 hp mercruiser question

What do you call that ugly fin they bolt to the anti ventilation plate?
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Old 02-09-2011, 05:09   #6
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Re: Inboard outboard 1987 winner w/ 200 hp mercruiser question

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What do you call that ugly fin they bolt to the anti ventilation plate?
"Doel-Fin"
https://www.whitworths.com.au/pdf/36533_DoelFin.pdf
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Old 02-09-2011, 07:32   #7
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Yes! Trim tabs they attach to the outboard just above the prop where the little holes are in the trim? Where could i purchase those?
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Old 02-09-2011, 07:39   #8
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Re: Inboard / Outboard 1987 Winner with 200hp Mercruiser Question

Are you talking about the anodic trim tab used to correct steering?
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Old 02-09-2011, 07:39   #9
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Re: Inboard / Outboard 1987 Winner with 200hp Mercruiser Question

most chandleries and online. doel fin is original .. there are knock offs also. they also can be found where you purchase engines and smaller outboard propelled boats.
goodluck.
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Old 02-09-2011, 07:45   #10
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So i need to search online for dole fin?
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Old 02-09-2011, 07:46   #11
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And they do help to stop porposing?
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Old 02-09-2011, 07:53   #12
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Re: Inboard / Outboard 1987 Winner with 200hp Mercruiser Question

No they are meant to correct steering bias. You might want to check your trim limit switch position in the fully down position but more experienced power boaters will chime in at some point and point you in the right direction.
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Old 02-09-2011, 12:18   #13
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Thank you! Going fishing!
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Old 02-09-2011, 16:15   #14
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Re: Inboard / Outboard 1987 Winner with 200hp Mercruiser Question

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So i need to search online for dole fin?
NO - I did it for you. (Post #6)

"Doel-Fin"
https://www.whitworths.com.au/pdf/36533_DoelFin.pdf
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