Rotted transom good stringers.

[Mscotts1]

My question or questions are. Can I cut off a peice of the rear of stringer and peice it back in? How should I do it? I need to rebuild transom on my 79 mark twain 20 ft bowrider but all my stringers are good but I'm going to need to cut the back end of stringers to get transom core in because I only have the resources to do it from inside boat. Can I redo floor if side pieces are still on? That's just for starters lol thanks in advance.

 

[Emerger]

My question or questions are. Can I cut off a peice of the rear of stringer and peice it back in? How should I do it? I need to rebuild transom on my 79 mark twain 20 ft bowrider but all my stringers are good but I'm going to need to cut the back end of stringers to get transom core in because I only have the resources to do it from inside boat. Can I redo floor if side pieces are still on? That's just for starters lol thanks in advance.

Yes, you can cut the stringers and piece them back together. There are a number of different scarf joints or lap joints you can use to rebuild them. You can google scarf or lap joint for pictures of them. A joint with fiberglass over it will be as strong if not stronger than the original stringer.

 

[GSPLures]

Welcome,

Post some pictures of what your working on, it helps determine the proper course of action. (Otherwise the help will just be generic responses of what the standard procedure is)

How did you determine the stringers are good? The only way to tell is to take core samples

You can cut the stringers and replace part, most people do a 12:1 scarf joint and then sister some some pieces to the joint to help strengthen the joint.

Depends on where the floor ends and if the sides are in the way, no way to tell with out pictures.

Chances are that you are going to discover a lot more rot than you initially planned for. Just be prepared for a total stringer job along with deck and transom (just giving you a heads up, most transom jobs turn into a complete gut due to age of the boat)

 

[tpenfield]

My question or questions are. Can I cut off a piece of the rear of stringer and piece it back in? How should I do it? thanks in advance.

Yes, we will allow you to cut the stringers and add a section back in

What is around the stringers will indicate the best way to join them. Can you post some pictures so we can see what you are seeing?

As mentioned, make sure the stringers are really good inside and out, else you'll be doing this again in a few years.

 

[Mscotts1]

Yes, you can cut the stringers and piece them back together. There are a number of different scarf joints or lap joints you can use to rebuild them. You can google scarf or lap joint for pictures of them. A joint with fiberglass over it will be as strong if not stronger than the original stringer.

Thanks

 

[Mscotts1]

 

[Mscotts1]

Thanks guys I'll post better pic after work

 

[Mscotts1]

 

[JASinIL2006]

I'm amazed that a boat with a transom that looks that bad could have good stringers. Did you drill into the stringers along the base to see if the encapsulated wood is still good?

 

[GSPLures]

As indicated above, due to that amount of rot it has chances are probably close to zero of good stringers.

Once the floor is up grab a 1/4" drill bit, drill holes along the bottom of the stringers ( dont go all the way through) and inspect the condition of the shavings. Do this at minimum of every foot along the entire stringer. If the shavings are dry and look like wood mix up some PB and push it into the holes. You will already have the stuff you need when doing the transom.

There is no point in putting a good transom behind rotten stringers, it will prematurely destroy the transom and deck and is possibly a dangerous situation on the water.

 

[Emerger]

View attachment 341070

As was said above, you're probably looking at bad stringers also. Since you are planning to cut them back to replace the transom anyway, begin by cutting a good two feet of the stringers out to see if you have good wood. If it's not good, continue cutting until it is.

 

[Mscotts1]

It looks like someone did the transom before ant didn't do it very well stringers look good except the last 3 inches with I hafta cut off anyway

 

[Mscotts1]

 

[Mscotts1]

 

[Scott Danforth]

It looks like someone did the transom before ant didn't do it very well stringers look good except the last 3 inches with I hafta cut off anyway

that looks like original glass covering the transom and stringers

 

[GSPLures]

You will find as you go that the factory cuts lots of corners. Get em out fast and sell now mentality. If done properly the boat will go another 50 years, keep up the good work.

 

[Mscotts1]

As was said above, you're probably looking at bad stringers also. Since you are planning to cut them back to replace the transom anyway, begin by cutting a good two feet of the stringers out to see if you have good wood. If it's not good, continue cutting until it is.

They are in good shape inch n a half of rot the an inch of soft cut back further n it was like new

 

[Mscotts1]

that looks like original glass covering the transom and stringers

Could b but im finding screws everywhere n the sheets are separated but idk a whole lot

 

[Mscotts1]

You will find as you go that the factory cuts lots of corners. Get em out fast and sell now mentality. If done properly the boat will go another 50 years, keep up the good work.

Thanks

 

[tpenfield]

Just a quick observation, this boat appears to have been made at Home Depot



The stud (stringer) does look to be in good shape even a few inches from the transom.