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Old 02-04-2014, 10:13 PM   #1
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Country: engalnd
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transom rebuild?

On closer inspection my transom is very poorly
Any advice, threads on how to fix?
Thanks
Chris
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Old 03-04-2014, 10:53 AM   #2
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Sorry I don't have any advice, but I just noticed the irony of your post that made me smile.

You have a dodgy transom and your sign off says 225 HP on the way!

Hope you manage to get it fixed without too much pain and grief, summer is coming.
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Old 03-04-2014, 01:30 PM   #3
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I assume the boat has an outboard well, so it's a difficult job. Unless it's a fairly decent boat, or your able to do the job yourself, then the cost of it quite often comes to more than the value of the boat. If the transom needs a complete replacement, then you need to either take the deck off, of cut the well out. This together with the cost of materials, is £££££
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Old 03-04-2014, 08:46 PM   #4
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It's a bit of a job putting in a new transom. I've been fitting a new one to my Avenger19 over the winter together with new knees and stringers.
I have seen transoms braced with Stainless struts and reinforced with more plywood glassed In between the knees and SS engine plates.
It depends how bad it is really.
I see the Americans have a pourable solution to transoms where they just cut off the top lip of the transom a GRP takeout the rot and pour in a two pack mixture.
The best you can do to evaluate how bad it is is to tap all over the inside of the transom with a hammer and listen for a change in pitch.where it's nice and firm there will be a firm sound and softens where the rot is. Also look for flex and stress marks.
It's a shame to write off these old boats- have you got any carpenter and or GRP laminator mates ?
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Old 03-04-2014, 08:56 PM   #5
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inside out, or outside in.... thats all you have to choose.

If you have good rear access, take it out form inside, but you will need access to the top of transom, most likely.

Outside in, they just seem to chop em off, leave a lip. then glass new wood in. Seems an easier route to me, except the sanding and making it look good.
I still cant work out, why no one laminates gel, then fibreglas, then wood to a flat surface, the size of the transom, then glues that into the rear of the boat. there must be a reason as no one seems to do it.

PS TD likes transoms
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Old 03-04-2014, 10:09 PM   #6
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transom replacement

I have just replaced transom on a 21ft Avenger .big job hopefully well worth doing. I also glassed on a gel faced panel to 50mm of marine ply and am very pleased with the finish so far. will try to add some pics
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Old 04-04-2014, 01:49 AM   #7
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I rebuilt the transom on my fletcher and also just finishing off a new 54mm + glass transom o my sports cuddy. Its a lot of work but doable. I've done mine from the inside... removing the old one is the challenge. I chiselled out what I could the ground out the rest. Both transoms were worse than they appeared. If you thnk its rotten then its probably worse than it looks.
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Old 04-04-2014, 10:49 AM   #8
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We do them all the time.. my rule of thumb is about 1000 euro plus cosmetics.
Easiest way by far is to cut the well out, then glass it back in.

Cosmetics is finishing in the well, either spray in 2 pack.. cheaper or gelcoat.. a bit more expensive.
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Old 04-04-2014, 01:15 PM   #9
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Quote:
Originally Posted by freedom View Post
On closer inspection my transom is very poorly
Any advice, threads on how to fix?
Thanks
Chris
What boats this Chris?
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Old 05-04-2014, 01:27 AM   #10
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Finished making a new transom late last year,sealed it but could not fit it in time,i only had one sash clamp so screw planning was important.
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Old 05-04-2014, 08:37 AM   #11
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Quote:
Originally Posted by born free View Post
I have just replaced transom on a 21ft Avenger .big job hopefully well worth doing. I also glassed on a gel faced panel to 50mm of marine ply and am very pleased with the finish so far. will try to add some pics
so did you lay it up with gel before fitting to boat? Looks good.

What wood do you lot use?
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Old 05-04-2014, 04:59 PM   #12
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Quote:
Originally Posted by glen76 View Post
so did you lay it up with gel before fitting to boat? Looks good.

What wood do you lot use?
I actually used a cured seperate 2mm gel finished panel then laid up 2x sheets of csm and pressed them onto the marine ply and left them clamped for a day . next job is to turn boat over rub the lot down and re-gel ! just need some time
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Old 09-04-2014, 07:26 AM   #13
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My Ring 21C (done by person here in Holland).. Just for the pictures, it's all in Dutch

http://www.snelleboten.nl/viewtopic....=asc&start=240
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Old 05-05-2014, 02:53 PM   #14
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What timber you lot using in UK?
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Old 05-05-2014, 11:36 PM   #15
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Quote:
Originally Posted by glen76 View Post
What timber you lot using in UK?
Personally i used 18mm marine plywood from Leigh Timber,i found it had the right amount of flexibility for laminating (3x18mm=54mm),i got the transom the stringers and fuel tank bracers out of one 8'x4' sheet.
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Old 01-10-2016, 02:38 PM   #16
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hi shaun I am Essex based have a 170 bay liner these only have wood directly where outboards mount not across whole rear of boat so have you any ideas about replacing transom timber on this have seen american idea of poured chemical but seems to be some concern on boats where transom skin do not extend from one side to other thanks
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