Transom plywood

iwombat

Captain
Joined
Jul 12, 2006
Messages
3,767
Re: Transom plywood

Acutally it came out pretty easy. Structually, the top pieces don't add much of anything to the strength of the transom, so I'm going with the original design of three pieces.

So far, so good. I did find a lot of pitting and caked on salt underneath the motor mounts though. Nothing too scary, but it added some wire-brushing I wasn't expecting.
 

reelfishin

Captain
Joined
Mar 19, 2007
Messages
3,050
Re: Transom plywood

So far all of the one's I've done were older, all had one piece transom sections. The wing areas are visible from the inside of the splashwell and not covered. The transom eye bolts come right through into the splash well on each side and on the older ones double as cable pulley anchors.
I've considered adding an inner aluminum panel to the earlier transoms to protect the wood but figured that they've all lasted 40 years the way they were, so I never bothered. I never was very fond of how water can lay on the wood if the drain isn't kept clear and you have to maintain that lower bead of caulk between the wood and splash well tray.

The newer SS series and Fishmaster series have a slightly different transom layout, the gunwales are wider and the overall beam is wider on most boats too. I had a few 170 and 190 Fishmasters here but none have needed any major work, and since my preference is with the older boats, I've usually just sold the newer ones off minus their motors. I do like the shorter spashwell on the newer models, my 18' Chieftain has a 44" long splashwell with all sorts of wasted space. I have enough room to safely carry two coolers, one on each side while underway with no chance of motor interference.
One of these days I'll remember to take some pics and document one of these in detail.
The hardest part on the older boats is getting the inner gunwale screws out of the transom wood. Other than that, their not bad at all. The top caps come off clearing the entire top, there's a string of screw across the bottom of the splashwell and several 1/4" bolts which attach the outer wood panel, the lower gussets and transom all together and then the motor bolts. Other than those, it's just assorted screwed on accessories to remove. On a few of of these, I found it necessary to cut back the upper gunwale sheet metal a bit to clear the transom wood. The rear edge on a few came back partly over top the transom plywood. I just cut back about 3/16" or so to let me pull the wood straight up and out.
 

iwombat

Captain
Joined
Jul 12, 2006
Messages
3,767
Re: Transom plywood

Well I put it all back together on Saturday, then tested it out with a day of fishing on Sunday. I ended up using carpet trim on the top. No leaks, no movement. I must've done something right :)
 

ezmobee

Supreme Mariner
Joined
Mar 26, 2007
Messages
23,767
Re: Transom plywood

Congrats. I had mine out for the first time post-repair last week as well. Still leaks but not from the transom and not nearly as bad a before. I guess a 40 year old tinny will do that.
 

iwombat

Captain
Joined
Jul 12, 2006
Messages
3,767
Re: Transom plywood

I should have qualified - no leaks from the transom.

Still seeps a bit here and there, but nothing bad.
 

iwombat

Captain
Joined
Jul 12, 2006
Messages
3,767
Re: Transom plywood

Some things I learned in the process:

Use the old transom to template the bottom, and as a rough guide for the top. Do not use it as a template for the holes.

Once cut, set the transom in place and use the outer skin to trace out the top and to mark all the holes.

4200 gets on everything.
 
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