Any Transom experts here. I have a Transom Rebuilding Question.

[Chris51280]

if you look at the bolts, it's perpendicular to the transom face. Many used drilling jigs. If you have a drill press, you can drill a hole into a block of wood and use that to guide the drill. since you already have the holes in the fiberglass, use that as a locator. the holes are bigger so it allows some clearance for the assembly to be fitted on. I also coated the inside of the holes with resin to seal.

 

[JASinIL2006]

Holes should be perpendicular to the transom, just like @Chris51280 says.

 

[1985 Century Mustang]

if you look at the bolts, it's perpendicular to the transom face. Many used drilling jigs. If you have a drill press, you can drill a hole into a block of wood and use that to guide the drill. since you already have the holes in the fiberglass, use that as a locator. the holes are bigger so it allows some clearance for the assembly to be fitted on. I also coated the inside of the holes with resin to seal.

Thanks for all the responses.

I do have a drill press, but my question is what's the angle, A 90 degree angle seems odd in what I've researched. Is it 90 degrees?

 

[Chris51280]

Well, what angle are the studs coming out of the housing that go thru the transom to the inside?

Yes, 90 degrees from the transom face is perpendicular.

 

[Chris51280]

 

[Chris51280]

 

[1985 Century Mustang]

Hey guys, after it's all sanded out, Do I fiberglass the new transom plywood before I install it, and do I cut out the bowling pin before I fiberglass it. I only have a small section to do, its maybe 3 feet wide by 3.5 feet in height, Photo below.
Your thoughts.

 

[1985 Century Mustang]

View attachment 397441

Thanks for that photo. It helped a lot.

 

[Chris51280]

did you watch any of the rebuild videos online yet

 

[Chris51280]

 

[1985 Century Mustang]

These videos are very informative.

 

[todhunter]

These videos are very informative.

Watch the rest of them in the series - they were very helpful during my restoration.

 

[1985 Century Mustang]

The new transom. 2 pieces of 3/4 Exterior Plywood. Titebond 3. Clamps and screws.

 

[1985 Century Mustang]

How long should I keep it clamped for?

 

[JASinIL2006]

24 hours is plenty. In reality, overnight would probably be sufficient as long as you’re not stressing it too much.

 

[1985 Century Mustang]

One of the members suggest I put a good coat of chopstran fiberglass with resin on this bare transom first, prior to putting the new transom in with the peanut butter mix.

I also thought it to be a good idea, and if so should I cover over the bowling pin cutout and the bolt holes also with the chopstran and later trim it out? Your thoughts?

 

[Chris51280]

If you use peanut butter with the 1/4 chop strand, it will fill all the voids sandwiching it with the plywood. The csm will not go into all the uneven surfaces. It will not even add much strength.
I would however clean the outside up a bit more so the 1708 wrapping around has something to grab to. not the gelcoat

 

[JASinIL2006]

If you're worried about strength, CSM won't add much anyway. You'd want to add a layer or two of 1708.

Personally, I would not bother. I would do as @Chris51280 suggests, though, and make sure the area around the transom is ground free of gelcoat, so that your tabbing has a good layer of pink fiberglass to which to adhere.

 

[Drivewayboater2]

Agree with Chris and JaSin. Grind away the gelcoat at least 4/5”.
Resin( epoxy or polyester) doesn’t adhere to gelcoat very well. Here’s how far I did mine

 

[1985 Century Mustang]

Question- When notching out the steering swing on the new transom, what's the best way to do it exactly? Is there a template I can use etc. Am I going in on an angle with a keyhole saw? I'm confused... The second image shows the area I need to focus on that's circled in red.

PS- Can anybody post a photo on how it should look before the transom mount is put on.