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Old 07 January 2005, 13:41   #1
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help on transom reinforsement

hi,
i have recently taken the 50hp engine of of the back of the transom on my sr4. i have noticed that the layer of fiberglass each side of the ply inner have split appart from the ply, and now the transom is bendable . will it get better when i bolt the engine back on. if not what would be the best way to reinforce it. will stainless pates on each side do, and if so what thickness should they be, and how should they be attached?

thanks
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Old 07 January 2005, 13:49   #2
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Is.....

.....the ply wet?
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Old 07 January 2005, 14:02   #3
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damp, but probably not wet,
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Old 08 January 2005, 06:31   #4
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If .....

you can dry out the ply core of the transom it would be best to inject the gap with a slow cure resin, this may not be easy if you are going in through the holes for the engine mounting, is there a gap along the top edge of the transom or is this capped with fibre glass?
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Old 08 January 2005, 08:35   #5
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hi ribraff,

no the top of the transom is not glassed up, it is just the usual avon bit of aluminum.

what would be the best glue to fill with, would marine epoxy be strongenough?

thanks
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Old 08 January 2005, 09:00   #6
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It would be.....

....best to use polyester resin as it is viscous enough to pour in also you can control the cure rate, scott bader is probably the best place to buy it from.
You see a lot of sea-riders with this condition, i think its the wood swelling up and shrinking that causes it. Do you have the stainless transom knees still on?
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Old 08 January 2005, 10:34   #7
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Hey 118118

I had the same problem with my first Searider.

I cured it by purchasing a sheet of 8mm stainless (possibly a bit over kill and a bit heavy, my flooding hull was sealed) cut to fit the inboard side of the transom.
I then made a template of the engine bolt pattern and had a fabricating buddy to drill the sheet for me.
The whole lot was bolted back on (including the struts) with A4 s/s bolts and lots of Jollop. The bent transom pulled in tight to the stainless sheet removing the bend (not sure how soggy your transom is).
It wasn't the prettiest job (could be with a polished s/s sheet), but then my SR4 was my sailing school safety boat.

That's how i fixed mine. somebody will sure have a better suggestion i expect.

P.S. sold that RIB with the sailing school, she is still going strong and i now have a 1995 SR4 with the moulded transom struts.
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Old 08 January 2005, 16:09   #8
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thanks for all the relpys, and yes, i still have the stainless struts on.

if the glue doesn't work or fails, what is likly to happen?
will the transom get pulled out or will it just break down the middle ?

thanks
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