1993 Glastron OB Transom Restoration...

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Do you mean well dried pressure treated plywood? If it's dry & didn't warp while it dried, I guess you could use it. But 'usually' pressure treated plywood isn't used...

Which one you use????, Any One Around?

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

I have a question, when laminate transom pieces together, I thought to use PL but its looks that curing time is over 72 hrs, here we have a temp of 80 to 90 degrees daily so curing time could be less that that. Anyway who works better, PL or PB? Any other suggestions?

 

[jbcurt00]

Re: 1993 Glastron OB Transom Restoration...

Being in the states, I don't know what materials are available to you & at what cost?

Glue: TiteBond III will dry in an hour or 2 to laminate the transom plywood. Here in the states, a gallon bottle (enough for most of a boat rebuild) is about $30/gal. When used correctly, applied in a fairly thin film on both parts and allowed a minute or 2 to set, then clamped w just enough force to keep the parts in place & maintain the bond, will go a long way.

What plywood did you use when the deck (floor) were replaced? Stringers were thoroughly inspected then, correct? Or replaced too?

In the states the following are frequently used, since they are available in some places & not others, not even by special order, these are in NO PARTICULAR order:

Aurauco
MDO
Marine
Okume
Douglas Fir
exterior grade ACX

You need:
Exterior rated
Waterproof glue
Plywood core & edges to be relatively void free (no gaps in the veneer laminations of the plywood)
Fairly flat, un-warped sheets

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Being in the states, I don't know what materials are available to you & at what cost?

Glue: TiteBond III will dry in an hour or 2 to laminate the transom plywood. Here in the states, a gallon bottle (enough for most of a boat rebuild) is about $30/gal. When used correctly, applied in a fairly thin film on both parts and allowed a minute or 2 to set, then clamped w just enough force to keep the parts in place & maintain the bond, will go a long way.

What plywood did you use when the deck (floor) were replaced? Stringers were thoroughly inspected then, correct? Or replaced too?

In the states the following are frequently used, since they are available in some places & not others, not even by special order, these are in NO PARTICULAR order:

Aurauco
MDO
Marine
Okume
Douglas Fir
exterior grade ACX

You need:
Exterior rated
Waterproof glue
Plywood core & edges to be relatively void free (no gaps in the veneer laminations of the plywood)
Fairly flat, un-warped sheets

I have seen TiteBond @ HD and douglas fir too, regarding the floor replacement I used Dry Treated Plywood, the one in the pics here. The stringers still solid as a rock but have to mention that they are fiberglass overfoam.
Thanks forthe info!

 

[jbcurt00]

Re: 1993 Glastron OB Transom Restoration...

Douglas Fir exterior plywood is usually good stuff. But go thru the sheets & find a good 1, flat & no missing wood along the edge.

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Yes, important tip regarding the edges, will look closer to details in wood panel, anyway take a look at my deck restoration, pictures has been restored.

 

[Woodonglass]

Re: 1993 Glastron OB Transom Restoration...

FYI I get a warning from Google Chrome that Your link to your floor restoration contains Malware.

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

FYI I get a warning from Google Chrome that Your link to your floor restoration contains Malware.

I will look in to that situation, as explained to Don S my hosting is provided by godaddy.com, I dont believe in any way that godaddy allow any malware in they servers.

But to AVOID any misunderstanding here or in any on my threads I already MOVE all mi pics to photobucket.com

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Ok, finally cut the transom out from Treated wood and "sandwich" it together with Liquid Nails Polyurethane, this products works nice and dry in just 8 to 12 hrs, NOT 72 as some one said around, well maybe because of weather or temp in other states. Take a look!

both panels already glued together, its looks as one piece, btw very strong wood can hold up to a 200 HP Outboard with no issues.

Here is my new friend with some gypsom board screws around

Splashwell view...

Another one

Inside view of the real thing, have to grind a little to almost a perfect fit, Im happy with it.

Next Step, first glass.... More pics coming soon, stay tuned!

i know you like it!

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Alright, Transom already IN!!!! YES! Fit very well no problem, lets start Step 4...

PB working, still need a little more, NEXT, FB!!

Splashwell...

.....

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Cutting fb patterns for glassing, first pic shown the combination mat Im using for tabbing the transon.

Patterns over transom template, 3 inches outside 3 inches inside

It should looks like this when tabbing done, the csm goes in before start tabbing.

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Just a few hours working on transom today but keep moving this resto, here is a view of back of transom upper area, 2x4 woods already moved, the pattern and outside transom tabbed toghether hrd and strong, no doubt, grind a lot and Im thinking need a little bit more, start to get ready for one coat of FB to move then to gelcoat,ONCE repair the splahswell.

Inside view for tabbing, as you can see I do not have enough room to move in but the tabbing looks and feel strong, one more (maybe 2) glassing of the Combi Mat here to end this process, "i hope"

 

[Woodonglass]

Re: 1993 Glastron OB Transom Restoration...

Did you put glass on the wood before you installed it? Did you coat it with resin before you applied the glass? I'd recommend your tabbing to extend 8-10 inches out on the sides and bottom. PL does not totally stop outgassing for 72 hours and does not reach it's final cure for up to 7 days. It may appear to be dry but it is not. If you research the technical specs you will find this to be true.

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Did you put glass on the wood before you installed it? Did you coat it with resin before you applied the glass? I'd recommend your tabbing to extend 8-10 inches out on the sides and bottom. PL does not totally stop outgassing for 72 hours and does not reach it's final cure for up to 7 days. It may appear to be dry but it is not. If you research the technical specs you will find this to be true.

I put glass at the back of the wood before install it, wood was coated with resin before glass application. Up to date 6 days has been passed already, so for final cure, it will be there as soon as tomorrow! Anyway it was set in 12 hrs, I leave it overnight for PL kick.

Here is the pic for 1st glass

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

PL does not totally stop outgassing for 72 hours and does not reach it's final cure for up to 7 days. It may appear to be dry but it is not. If you research the technical specs you will find this to be true.

Here is the technical specs, its dry from 8 to 12 hours, as I said before could take longer because of weather, temp or humidity. This isnt the case here since we have a daily temp of 85 to 90 degrees

 

[mrdjflores]

Re: 1993 Glastron OB Transom Restoration...

that spec is a bit misleading....says cures in <12 hours....but if you look at the sheer strength spec, is says after 48 hours reaches > 250 psi....if it was fully cured after 12 hours, sheer strength would not increase beyond 12 hours....
the chemical composition reaches a cured state within 12 hours, based upon a minimum sheer strength....but continues to outgas for up to 48 hours, which increases it's sheer strength....it will continue to outgas even longer, but no significant increase in sheer strength.....

but during all this outgassing......that vapor needs a place to go

 

[Woodonglass]

Re: 1993 Glastron OB Transom Restoration...

This ^^^ is 100% accurate. This is directly from the LN FAQ sheet, and what I was told by Tech when I called them. http://www.liquidnails.com/faqs/index.jsp

LIQUID NAILS ADHESIVE
15885 West Sprague Road.
Strongsville, OH 44136
Phone: (800) 634-0015
Email: liquidnails@akzonobel.com

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

I have a question here; How can I deal with the transom upper area?
Do I have to round over the outside edge of the transom up to the outer skin?

Ok then, I decided not to round over the outside edge of the transom cause I believe it could "overkilled" the job, its not necessary since the transom and the outer skin has been glued very well with PB not to mention the tabbing process, thats mean that the transom is in place for years to come, it could handle a 200HP OB with no problem, maybe will add a csm tape of 2 inches on top of the transom just as a protection, but that is a "maybe" the top have a few coat of resin.

 

[krakatoa]

Re: 1993 Glastron OB Transom Restoration...

Ok, big improvements, transom glassing complete, splashwell almost complete looking forward for sanding final touches

Transom inside view, have tabbing, one glass of CSM and 2 CombiMAT,

Topview of my friend here with the splashwell open

Port side , this one was broke cause a weak transom, starboard side already open too but now has been fixed, just compare with post # 1 pictures 3 and 4..

Splashwell already fixed, just left here a little detail at the left of the pic, have a piece of wood for this, then will complete the glass here, also need to open the water drain at the middle of it. Need to reduce in the middle of the transom no more than 1 inch, thast why the glass doesnt go up to the top. Nothing serious but now have to round over the top.

Side view...

Take in consideration that this pictures has not been edited in any way, this is the real thing, when times comes make up will come to a nice and neat finish....

 

[mrdjflores]

Re: 1993 Glastron OB Transom Restoration...

is the edge of the new glass laying on top off old gelcoat or paint (the white surface)? in the picture above