Bertram 25. Help me evaluate transom now that keyholes are open

Questions about boat repairs with our resins and fiberglass: hull patches, transoms and stringers, foam, rot etc.
ttownthomas
Frequent Poster
Frequent Poster
Posts: 20
Joined: Wed Jul 17, 2019 1:01 am
Location: North Carolina

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by ttownthomas »

Structural Glasswork in the bilge is done:

ImageEngine Mount Location - 1 by ttownthomas, on Flickr

Fuzz
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 8921
Joined: Tue Aug 02, 2011 4:23 am
Location: Kasilof, Alaska

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by Fuzz »

Good looking glass work. I bet you are glad to have that done.

fallguy1000
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 10198
Joined: Tue Jan 12, 2010 12:25 am

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by fallguy1000 »

Looks pretty clean to me. You might consider a little cpes on the keyhole insides.

Any holes in the repaired transom should be overbored; filled with thickened epoxy and then rebored as needed.

Leaky Holes are what end up killing these.
My boat build is here -------->

viewtopic.php?f=12&t=62495

ttownthomas
Frequent Poster
Frequent Poster
Posts: 20
Joined: Wed Jul 17, 2019 1:01 am
Location: North Carolina

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by ttownthomas »

Is cpes useful even though I used coosa? How much should I overbore the holes?

fallguy1000
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 10198
Joined: Tue Jan 12, 2010 12:25 am

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by fallguy1000 »

ttownthomas wrote: Sat Sep 18, 2021 9:47 am Is cpes useful even though I used coosa? How much should I overbore the holes?
No need for cpes on coosa.

I thought I saw wood in the keyholes.

Only overbores for wood.
My boat build is here -------->

viewtopic.php?f=12&t=62495

fallguy1000
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 10198
Joined: Tue Jan 12, 2010 12:25 am

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by fallguy1000 »

Ain't this wood?
CEBFCCD5-3EAF-4A1C-B650-FD056CF08646.jpeg
My boat build is here -------->

viewtopic.php?f=12&t=62495

fallguy1000
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 10198
Joined: Tue Jan 12, 2010 12:25 am

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by fallguy1000 »

Oh, shoot. That looks like the garage on closer inspection. Sorry. For some reason, I thought you had jist added some coosa and the wood was still there.

No need for cpes! Hope I didn't screw you up. Very sorry if so.

Cpes won't hurt to have on hand if you ordered some. It is a great product for stopping any rot on questionable wood.
My boat build is here -------->

viewtopic.php?f=12&t=62495

ttownthomas
Frequent Poster
Frequent Poster
Posts: 20
Joined: Wed Jul 17, 2019 1:01 am
Location: North Carolina

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by ttownthomas »

Lol. That’s the fence at the top of my driveway

chrisca
New Poster
New Poster
Posts: 4
Joined: Wed Aug 03, 2022 8:41 pm
Location: BC Canada

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by chrisca »

Hi,

I came across this discussion as I am currently working on my Bertram 25 flybridge.

I took the motors out and I'm swapping them for another set of 165 Mercruisers that are fresh water cooled.

I cleanup the bilge but the mounting holes for the front engine mounts are rotten out. I drilled a few holes and wood is bad and soft.

I will be cutting out the front engine mount area just as in your pictures and replace it with Coosa just as you did.

My question is, how did you mount the new engine mounts? Did you drill lag screws into the cossa after ? Or did you bolt through with some backing at the bottom.


See image below:
https://photos.app.goo.gl/2JWUtHraoqPWDzUX6

Image

fallguy1000
* Bateau Builder - Expert *
* Bateau Builder - Expert *
Posts: 10198
Joined: Tue Jan 12, 2010 12:25 am

Re: Bertram 25. Help me evaluate transom now that keyholes are open

Post by fallguy1000 »

It would be best to start a new thread. All rot must be removed or the new mounts will rot out as well. Start a new thread in the repair forum and we'll help you there.
My boat build is here -------->

viewtopic.php?f=12&t=62495

Post Reply

Who is online

Users browsing this forum: No registered users and 12 guests