plywood for transom?

[cdhunter]

I'm getting ready to do the transom this winter in our 1963 Aerocraft York. I have plenty of access to marine grade 27mm plywood is one sheet alone thick enough or wood you laminate to this? To answer the next obvious question I work for a company that repairs shipping containers in Canada.

 

[studioq]

I'm sure there are a lot of opinions - and not everyone has the same application - but below is a link to my transom rebuild. I elected to laminate (2) 3/4 inch boards with layers of CSM, 28oz stitch-mat and 1708 fiberglass. Your mileage may vary...

http://s1380.photobucket.com/user/st...?sort=2&page=1

 

[johnnybgood]

I agree with studioq I used 2 layers of 3/4 marine ply laminated together with CSM between when I redid my transom. I had to go from the outside of the transom rather than the inside so I used 1708 to finish the outside of the transom

 

[Scott Danforth]

welcome aboard.

two 19mm sheets laminated to give you the 38mm thickness required. the 27mm will not cut it. however you could laminate the 27mm with some 11 mm.

exterior grade plywood is more than adequate (more readily available than marine grade)

 

[ondarvr]

Just rebuild it back to what it was originally, if that was 27mm then it will be fine.

 

[Woodonglass]

This ^^^ is sound advice!!! What are the dimensions now?? Also Pics always help us to give the best advice

 

[cdhunter]

Thanks for the suggestions, I plan on decapitating the boat this weekend. I'm trying to get as much done before snow flies, but hunting season seams to be in the way geese, chickens and deer fill the freezer, fiberglass resin no to much.

 

[Woodonglass]

There is ALWAYS THAT!!!!!

 

[cdhunter]

I'll post pictures when I'm doing the decapitation. This boat is a rescue, cost me the gas to go and get her. Probably would save a lot of money just salvaging the trailer and motor, but the lines of the boat talk to me. My original plan was to buy a brand spankin new smoker craft so fixing the Aerocraft is saving me about $35,000 and the boys at the shop are excited as the communal project 66 mustang is set to leave shortly.

 

[BWR1953]

Okay, now we need pix of the Mustang too!

 

[cdhunter]

A quick update the AeroCraft was toast! We had fiber glass rot everywhere and worse then it appeared to the naked eye transom floor then we found it in the bow where the front tie down was. Lesson learnt free is always cheaper I lucked out and hadn't purchased any supplies other then what was becoming a mountain of plywood which a fellow worker bought off me. Having had shoulder surgery this past winter and not being allowed to go back to work means I've been technical director for the rest of our friends and our small fleet which didn't winter well

 

[ondarvr]

What is fiberglass rot?

 

[cdhunter]

we call it fiber glass rot, where exposure to the elements without proper care of the gel coat and or paint causes the fiberglass to go brittle and soft. In this particular case there had been a previous repair and it hadn't been sealed or cured properly and broke out roughly a foot of the bow when we went to untie the bow line. Wintering a boat during our off season is critical, the cold is as lethal as snow. When I rescued the boat it had been uncovered already for years. I knew better just hoped it wasn't as bad as it looked cause i liked the hull.