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 soft transom?		  New Topic  Topic Locked
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frants
1st Mate

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USA
55 Posts
Initially Posted - 04/23/2005 :  20:27:10  Show Profile  Visit frants's Homepage
Allright - she's a floatin' Everything looks fine on my old boat, but today I've noticed that the transom looks "soft" from the weight of the 9.9 Honda outboard. There is a plate on the inside of the transom,
but it does not look like it is large enough. Is there any risk of damaging the transom - tearing it apart -etc?
Frants
Edited by - on

ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 04/24/2005 :  10:38:32  Show Profile
Many of us add extra reinforcement on the inside/outside of the transom to deal with the new generation of heavy motors. I have oversized UHMW (high-moly) backing plates on the inside of the hull, and 3/4" X 3" X 16" long teak stips bedded under the engine mounts on the outside.

I cut an access hole in the lazarette to gain access to the lower mounting bolts. (I have an early model C25 with the engine on the portside)

There should be quite a few threads hanging around on the forum regarding these projects.
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Frank Hopper
Past Commodore

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Pitcairn Island
6776 Posts
Response Posted - 04/24/2005 :  17:33:56  Show Profile  Visit Frank Hopper's Homepage


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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 04/25/2005 :  09:49:56  Show Profile
My "fronting plate" is also Starboard and looks like Frank's, except that I made it to follow the curve of the edge of the transom and extended it lower below the mount, where the real pressure is on the outside (from the leverage of the bracket and the forward thrust). It seems to be as solid as a rock. On the inside, I recommend rounding and even tapering the corners of any backing plate to keep them from creating too much point-pressure on the concave-shaped fiberglass. I split mine (vertically) to help it conform to the shape.
Edited by - Dave Bristle on 04/25/2005 09:53:26
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.