How much epoxy and cloth to re-glass tray

[MXman]

Hey guys,

I am in the process of having some fun and defoaming my SJ and I am looking for some advice on how much glass and resin to buy. I pretty much had to cut out the entire tray becuase it was cracked all over.

Here is a link to the resin I am looking at.
http://www.jgreer.com/

It comes in either 1.5 quart or 1.5 gallon. Which should I go for.

They only sell a 6oz cloth, is that heavy enough? How many layers do you think I need?

Thanks

 

[kiddioo]

1.5 gallons, never hurts to have extra. Are you glassing the old pieces back in or building a new tray? It'll take a ton of layer to make a new tray from scratch.

 

[Speedfreak]

Why wouldn't you go with uscomposits? The resin is cheaper and they have about every kind of cloth you could want. And they have the expanding foam needed? (if you are going that route)

I am not dissing your selection just wanting to see why that place is better?

 

[MXman]

I was mostly going to use them because they are local here in San Diego and I am ready to start re-foaming and glassing so I didnt want to have to wait for shipping.

After looking more at US composites I may just order from them.

Any recomendations on what cloth I should use and how much? I am basically laying a whole new tray from scratch.

 

[SJBrit]

Use 1708 biaxial for strength. You don't need much resin: 1.5 quarts is plenty. I just reinforced my whole ski (sides from front to back, nose, pole bracket, pole pad), glassed in and reinforced the tray and footholds, and fabricated a new back end after I shortened it and I used just a little more than a gallon of resin. Of that I bet I wasted about 10% to 20%.

 

[Yami-Rider]

Use 1708 biaxial for strength. You don't need much resin: 1.5 quarts is plenty. I just reinforced my whole ski (sides from front to back, nose, pole bracket, pole pad), glassed in and reinforced the tray and footholds, and fabricated a new back end after I shortened it and I used just a little more than a gallon of resin. Of that I bet I wasted about 10% to 20%.

1708 is 17oz i guess that's not over kill? Is 1708 pretty easy to work with? How many yard did you buy to do your whole ski?

 

[SJBrit]

1708 biax is not super easy to work with - it takes some patience to get it wetted out without going nuts on resin, and it doesn't like outside corners. For the tray it's ideal - lots of strength without tons of layers. I can't remember how much I ordered for the whole ski, but it's easy enough to measure - you can cut both sides of the ski from a single width so to go from back to front you need about 7 to 8 feet - the length of the ski. For the tray just measure the width plus 2x height - I think that's about 3 feet, so again you can do that from a single width. I laid a strip of 6" biax along the bondline (you can buy it in 6" width) and then a full covering over that. I re-used the old tray, so that has 6" strips over the seams and then another layer over the whole thing, plus one more again between footholds. Don't forget some extra for the pole bracket area and the nose. It's a bitch to do the pole bracket area with biax because of all the curves, so I used 8oz e-glass and built up about 3 or 4 layers.