Another Outboard bracket question... - SailNet Community
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post #1 of 7 Old 07-18-2011 Thread Starter
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Another Outboard bracket question...

So this appears to me to be a bad way of mounting an outboard bracket.

Yea or Nay?

I was thinking this is impossible to seal and will only cause leaking, am I wrong? I would like to mount it without the rubber pad, what say you guys? Of course i'd use some 4200 as a sealer and also make sure there is substantial backing as well...


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post #2 of 7 Old 07-19-2011
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My suggestion:

Do not fit it without something between the mount and the transom. The gel coat is already cracking, doing that will make it much worse. I would swap the rubber out for a thicker wood backing plate, use a router or sander to round off the edges to spread the load evenly (not 'hot spots'), and make an equally thick wood backing plate for the inside the same way. If you don't want to spend the cash on teak, Starboard plastic lumber could do the job for less, or a 'lesser' hardwood if you epoxied it up thoroughly.

Countersink the holes on the outside of the transom and use 4200 on the bolts and backing plate on the outside only. Do not put sealant on the inner backing plate, if it leaks from the outside you don't want to trap the moisture.


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post #3 of 7 Old 07-19-2011 Thread Starter
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Great idea! I went ahead and added some starboard to my cart.

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post #4 of 7 Old 07-19-2011
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The flexing would be stopped by bulking up the thickness on the inside with plywood. Since it would be inside it could just be regular plywood or epoxy coated. Loose the rubber pad (what where they thinking?)

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post #5 of 7 Old 07-19-2011
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I agree with Denise. But I would epoxy the plywood pad inside to the transom as well as seal it with epoxy. I would also make it larger than the bracket mount.
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post #6 of 7 Old 07-19-2011
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The glass in that area is probably less that a quarter inch thick. I noticed on my Islander a flex in the transom for the same reason. When I remounted the outboard mount on my Islander I used a piece of starboard the length of the inside area where the mount would be connected and added a support at the top inside the deck and bottom on the inside hull. I shaped the starboard to fit flush and glassed it in. Maybe overkill but it cured the problem and I felt much more comfortable. I used starboard because i only wanted to do it once.

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post #7 of 7 Old 07-19-2011
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If the inside piece added is not firmly attached to the boat with epoxy or similar it will not do as much to prevent flexing as if it is attached firmly.
And if using epoxy wood is the best choice as not much sticks to Starboard.

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