1988 Glastron GX 199 Restoration

[chconger]

Re: 1988 Glastron GX 199 Restoration

What I meant by seepage is, after you dispense the resin and then store them, they tend to leak or seep out resin. They are usually very accurate and reliable with the amount of resin being dispensed.

Ahhh...OK Yes I am familiar with that aspect; When you attempt to pump after a period of not using them, the first 1/2 stroke or so is "empty".

What I do is press down until there is resistance, usually means that it is "primed", and then go back for a full stroke.

Thanks

 

[Woodonglass]

Re: 1988 Glastron GX 199 Restoration

There ya go!!!!

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Here is an update where we are now;


1)The outside port stringer is glassed in.
2)The inside port stringer has been removed
3)All the old tabbing for the inside port stringer is ground down. Only one more stringer to grind!!!

That inside port stringer was mostly solid. But had minor rot along the bottom of it, was wet in the back, and had black growth in various places.

I was able to use it as a template for the 2 remaining inboard stringers. I cut the replacements from 3/4 marine mahogany ply and added drain passages at the rear;

The stringer I removed actually had the forward 20 inches or so as a separate piece. Even though it was once obviously the same stock. The cut to the right here was in the stringer when i pulled it out. The cut to the left is mine (at the 8 foot mark to help me make my new templates.

So i want to make the new stringers one solid piece. I decided to borrow from box making and make a crude dove tail joint;

Its a bit gappy; but that is what epoxy is for right?


The next change is to close up the gap for the forward bulkhead, or frame member (not sure what its called here). The frames were made from 1/2 ply and that what i am going to replace them with. But the cutout in the old stringers was much larger for some reason. So I closed this up;

I then used thickened epoxy to glue my stringers into one piece. I also put thin epoxy on the bottom of each stringer as waterproofing in advance of bedding them in PL.

Here they are setting up on the shed floor;

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Lastly, I cut out my bulkheads basic shape from 1/2 marine mahogany ply;

More cutting to do there but i will wait for all the stringers to be in place and cut to fit.


If all goes well I will be bedding stringer #3 tomorrow. With the PL curing time and glassing, I expect to be cutting out the last stringer by the end of the week.

Your up to date.

 

[ezmobee]

Re: 1988 Glastron GX 199 Restoration

Great work so far. That plywood you're using has to be the nicest ply I've ever seen!

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Great work so far. That plywood you're using has to be the nicest ply I've ever seen!

Hey Thanks! Yes that plywood is fine stuff, and priced accordingly; A 3/4 sheet (4 by 8 feet) is $160 tax in.

But when you start stripping it down for stringers, it works out to be fairly economical option for rot resistant wood. I just ran the math and its actually slightly cheaper than western red cedar, which I found to be the cheapest option of all rot-resistant board available here.

 

[Woodonglass]

Re: 1988 Glastron GX 199 Restoration

Exterior Grade Fir Plywood is rot resistant and uses the same Water proof glue as the Marine Grade and it's 75% less expensive. Once it's encapsulated in resin it'll last 30+ years or more depending on the care and maintenance of the boat. But it is NOT as strong due to having voids in the plys and having fewer plys. It's all a matter of choice and what you're willing to pay. Personally I'm a Cheap Ole' Okie and don't pay for the Good stuff unless someone else Pays for it. Being a woodworker, I sure do like working with it though. It's really nice stuff.

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Exterior Grade Fir Plywood is rot resistant and uses the same Water proof glue as the Marine Grade and it's 75% less expensive. Once it's encapsulated in resin it'll last 30+ years or more depending on the care and maintenance of the boat. But it is NOT as strong due to having voids in the plys and having fewer plys. It's all a matter of choice and what you're willing to pay. Personally I'm a Cheap Ole' Okie and don't pay for the Good stuff unless someone else Pays for it. Being a woodworker, I sure do like working with it though. It's really nice stuff.

Yea...I am not sure I can justify this stuff even to myself. My Poor Wife does not participate in these decisions so things tend to gravitate to the extreme end of the scale when it comes to boats.

 

[GT Greg]

Re: 1988 Glastron GX 199 Restoration

Agreed. That is really a fantastic amount of progress in three weeks. I'm sure the finished product is gonna be gorgeous !

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Agreed. That is really a fantastic amount of progress in three weeks. I'm sure the finished product is gonna be gorgeous !

Thanks!

For 2 of those weeks I was on vacation. So I worked on this every morning and spent the afternoons sailing. That's na-ga-na-ha-pen anymore. So things will slow down now.

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Hi All

Here is an update. My inside stringers are set up;

The dove tail joint worked out OK, some of the epoxy did not make it into the joint everywhere, but i will fill that and it will soon be covered by fiberglass and more epoxy;

I bedded the port inside stringer yesterday with PL, I am waiting till tomorrow to tab/glass;

I also trimmed and dry fitted the rear bulkhead to this stringer and cut out where the SB stringer will notch in, all90 degrees here;

And because I missed all the itchy fun, I ground all the area where the engine mounts and their "short stringers" will be;

Here are all my prizes so far, (one bulkhead is missing because it came out in dust) one more stringer and I get a free sub;

That's it for now....

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Quick question;

The inboard stringers are 9 & 1/4 inch "tall", I have Epoxy and 10 oz cloth;

Do I need to run the cloth all the way up the side of the stringer? I am encapsulating the entire stringer with epoxy, and hoping to do a schedule of one 6" strip (3"inch up the stringer) followed by one 12" strip. That would leave 3.25" with no cloth at the top.

isallrite?

Thanks
Chris

 

[Woodonglass]

Re: 1988 Glastron GX 199 Restoration

I suppose you could, but I would not. You need the glass for vertical and lateral strength/stability. I'd make em both go to the top and the first 3" out on the hull and the second 6". Again, that's just me. I'm NOT an epoxy expert or much of a user. Just what I've seen an gleaned from other posts and sites.

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Yes, I think I like that better too.

Many Thanks!
Chris

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Update

The inboard stringers are in. That's 4 of the 4 large stringers done now. Each one took 4 hours to glass. I used Wood's suggested layup. Very happy.

Doing stringers one at a time means the boat is eternally dusty. I am sooooo happy to be on the other side of the big stringers.

Next up is to tab in both bulk heads (the one you see there is just dry fitted as a reference for the stringers)

Then I move to, what I call the "Engine Mount Stringers". I have them cut out aleady. Once again, i am changing the design to have them reach back to the transom and added limber holes.

That's it for now.

Cheers
Chris

 

[Woodonglass]

Re: 1988 Glastron GX 199 Restoration

Chris, you're doing some good work!!! She'll be great boat when you're all finished. Epoxy takes longer than Poly, but it does have it's benefits.

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Thanks Wood! That means a lot to me.

Cheers
Chris

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

On Epoxy;

I have consumed 2.7 gallons so far. A lot of that went into the channels beside each of the stringers. These "channels" are the backside of the lifting strakes that the stringer lie in for 2/3 the way.

The channels were easily 2" wide and larger in some places. So what was not filled by the stringer was filled up entirely with epoxy / flour mix. Then the two glass layers went over the lot while everything was still setting up; everything kicked at the same time.

Here is a top down view of the inside sb stringer showing the lifting strake channel filled in;

Another view:

Balance of the epoxy went into filling the 10 oz cloth, and setting in the transom.

Ill continue to keep track of what I use. Not sure if doing this in poly would have consumed more due to CSM layers?

Chris

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

I should add that the factory left these channels open to water entry. The old cloth simply bridged over the channel and left a void beside the stringer at the bottom.

It resulted in an open trough for water to collect and sit in with the stringer.

When I consider that, I guess the old stringers were not in bad shape.

 

[chconger]

Re: 1988 Glastron GX 199 Restoration

Here is what happened today;

Cut out details on forward bulkhead;

Glassed in rear bulkhead;

And roughly cut out the 1 by 4 that parallels the forward bulkhead. Here is the forward stuff dry fit with the rear stuff glassed in;

Much tabbing in the morrow.

Cheers
Chris