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Author Topic:   older revenge transom

dolphin posted 03-21-2002 04:48 PM ET (US)
It appears that the transom is soft and I need to know if the inner material is plywood or foam.. I felt inside a 1" hole and my finger came out brown (no laughing) and it was soft and crumbled. It does appear that the 1980 revenge cuddy I got recently may be needing to have the transom re-inforced and was curious what the material inside was. I think it is plywood and I'd rather fix it now before I become part of the local food chain and lose an outboard to boot.
Bigshot posted 03-22-2002 10:46 AM ET (US)
I had to laugh!
Should be Whalerwood and needs to be replaced. What they do now is cut the top and dig out all that is rotted and then "pour" in some epoxy stuff and she is stronger than a bull's ass, which you might want to keep your finger away from as wel...hahaha:)
Bigshot posted 03-22-2002 10:50 AM ET (US)
You have until April 13th to get it done. Just in time for our rendezvous in Tampa Bay. Don is coming from Englewood so maybe you can catch a ride up. Or are you too "soft" hahahhahah! Damn I kill myself.
dfmcintyre posted 03-23-2002 05:45 PM ET (US)
Dolphin -
It is, or rather was, marine grade plywood. While the jury is out on using plywood, or a composite material like BW's Whalerboard, I think that your in for a transom redo. Mine ran in the neighborhood of $3000 - $3500, form what I recall (that price was included in a total reno project).
I don't really see how you could scoop out rotted wood from the top, working down. You could hit a portion of good wood, and still have bad wood underneath.
What the shop did with mine, was to cut a line with a carbide tipped router, the whole outer skin of the transom off. Then pealed off the skin, exposing the bad wood and some foam. This was all removed, and new multiple layers of marine grade plywood was epoxyed into place. The shop owner told me that there is more wood in the transom that was origionally installed.
They then layed up multiple layers of glass and resin, and finished it off. Identical from origional.
The owner also pointed out that much of the rot occurs from the breakdown of the origional bedding compound around the engine through bolt installation. Their way around it is to oversize the bolt holes, pour in resin and let set up overnight. The next day the proper sized holes are drilled. This way, there is a sold resin "plug" running the length of the bolt hole, which will not allow water to penetrate into the wood, even if the bedding compound breaks down over time.
Good luck -
Don

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Author	Topic: older revenge transom
dolphin	posted 03-21-2002 04:48 PM ET (US) It appears that the transom is soft and I need to know if the inner material is plywood or foam.. I felt inside a 1" hole and my finger came out brown (no laughing) and it was soft and crumbled. It does appear that the 1980 revenge cuddy I got recently may be needing to have the transom re-inforced and was curious what the material inside was. I think it is plywood and I'd rather fix it now before I become part of the local food chain and lose an outboard to boot.
Bigshot	posted 03-22-2002 10:46 AM ET (US) I had to laugh! Should be Whalerwood and needs to be replaced. What they do now is cut the top and dig out all that is rotted and then "pour" in some epoxy stuff and she is stronger than a bull's ass, which you might want to keep your finger away from as wel...hahaha:)
Bigshot	posted 03-22-2002 10:50 AM ET (US) You have until April 13th to get it done. Just in time for our rendezvous in Tampa Bay. Don is coming from Englewood so maybe you can catch a ride up. Or are you too "soft" hahahhahah! Damn I kill myself.
dfmcintyre	posted 03-23-2002 05:45 PM ET (US) Dolphin - It is, or rather was, marine grade plywood. While the jury is out on using plywood, or a composite material like BW's Whalerboard, I think that your in for a transom redo. Mine ran in the neighborhood of $3000 - $3500, form what I recall (that price was included in a total reno project). I don't really see how you could scoop out rotted wood from the top, working down. You could hit a portion of good wood, and still have bad wood underneath. What the shop did with mine, was to cut a line with a carbide tipped router, the whole outer skin of the transom off. Then pealed off the skin, exposing the bad wood and some foam. This was all removed, and new multiple layers of marine grade plywood was epoxyed into place. The shop owner told me that there is more wood in the transom that was origionally installed. They then layed up multiple layers of glass and resin, and finished it off. Identical from origional. The owner also pointed out that much of the rot occurs from the breakdown of the origional bedding compound around the engine through bolt installation. Their way around it is to oversize the bolt holes, pour in resin and let set up overnight. The next day the proper sized holes are drilled. This way, there is a sold resin "plug" running the length of the bolt hole, which will not allow water to penetrate into the wood, even if the bedding compound breaks down over time. Good luck - Don