Thanks for the replies fellas. I downloaded an app and tried reducing the size of this batch of pictures. Let’s see if it helped!
So it’s been a little while since I’ve gotten a chance to do some work on the boat. In the meantime I’ve been stocking up my materials. I ordered a new bilge pump, which is a Rule 1,000 GPH model, a new aerator pump, which is a Rule 800 GPH model, multiple different types of epoxies, including some penetrating epoxies for the plywood decks and Gluvit which I will use to seal a bunch of seams and rivets before foaming. Also bought some new pneumatic tools, a die grinder and an air hammer for setting solid rivets. There’s a ton of more stuff, can’t remember exactly off hand, but you’ll see it all come together as it goes into the boat.
This weekend I got a little work done. I hated the original transom-to-hull brackets, they were wimpy little 1/16” aluminum angle brackets and had oxidation and pitting holes all over them. I decided they needed to be replaced.
Here’s a shot of the old brackets in place. You can see I added an aluminum strip to the hull side to hopefully reinforce it a bit. Totally scratched that whole plan.
My father works with a few local machine and sheet metal shops and he was able to have these brackets made up for me - for free. I was very grateful for that. They are 5053 aluminum, 1/8” but they are 100 degree angle brackets, not 90 degree. I used an angle finder to check the angle that the hull met the transom, and to my surprise it wasn’t 90 degrees. I expected regular aluminum angle to fit nicely in there, but it was more of an obtuse angle than I expected. They were originally 12” long but I cut them both down to 10” to fit. Had to do a little notching of the corners as well. Here’s a shot of them.
I drilled the holes for the solid rivets through the hull using the correct size bit, I forget the exact size, but I ordered it through McMaster when I ordered the 1/4” solid rivets. The rivets are 1/2” long. After opening up those holes the layout went smooth, as did drilling all the appropriate holes.
Here’s a picture of the new bracket installed with the un-set solid rivets in place:
Using the air hammer with a 1/4” solid rivet set and a 4 pound sledge as a bucking bar I set the solid rivets. This was my first time ever doing this, and I thought they came out pretty good! I watched a ton of YouTube videos first, and tuned the air hammer a little bit so it wasn’t hitting as hard or fast as normal.
Here’s the finish product after the locknuts and washers were torqued down on the transom bolts:
And a shot of the rivet heads from the outside of the boat. Looks good! Before I set the rivets I used a die grinder with a Roloc wheel to remove the paint and clean up the aluminum where the rivet would sit. Not a big deal, I plan on painting the boat down the line.
And lastly, here’s a broader spectrum shot of where that angle bracket is located. I replaced the bracket on the other side as well, but didn’t take pictures of that.