how much fiberglass/foam do i need to get?

[demolition_x]

I need to order my supplies for reinforcing the hull and foaming the back.

from what i researched i will be going with 1708 Knytex Biaxial, and 2 or 3 lb foam. but i couldn't find amounts of each.

now the question is how much of both do i need?

Fiberglass:
i will be completely de/refoaming the back of the ski. so i will be reinforcing in the back as well. does the bulkhead or the bottom need glass too? or should i just do the bond line? should i go with the 38" or 50" wide?

Foam:
how many cubic feet to do the tray? i also want to foam in the nose to replace the Styrofoam.

i will be ordering more than i need but don't know how much i need to get by.

thanks in advanced.

 

[SXR-FOREVER]

you dont want the foam to soak up water so I think leaving the styrofoam in the front would be a good idea...

 

[demolition_x]

i was gonna fiber glass over it so it would be enclosed in its own compartment.

this way if you hit bottom on a stab or something and break the nose apart you will not take on water.

 

[SJet]

Or you could not do stabs in shallow water????:banghead:

I am also refoaming my ski. I decided on the 3lb foam. I went with 5 cft. I would guess 3cft would do the ski.

 

[SJet]

You will want to fill in the bond line in the back for sure. They do leak. As for reinforcing, I would only do what you need to. Glass + resin = heavy?

 

[rkymtnrider]

:haha: :haha: :haha: :haha: :haha: :haha: :haha: :haha: :haha: :haha: :haha:

LOVE THE ORANGE SKIT!!!

sorry to interupt, carry on

 

[demolition_x]

You will want to fill in the bond line in the back for sure. They do leak. As for reinforcing, I would only do what you need to. Glass + resin = heavy?

this is why i am defoaming cause the thing drips for days after i use it. so i was gonna fill the bond line with west and 404, and lay glass on the bond line.

 

[SJet]

Yup, I used west and filler in the bond line but I didn't glass over it. I would make sure the bulkhead is sealed well. I went around mine with west.

 

[demolition_x]

out of curiosity why did you end up going with 3lb foam? what was the deciding factor?

 

[SJet]

I went with 3lb cause it is a little stronger than 2lb and lighter than 4lb.
:cheer:

 

[surferdude345]

hit me up when you get home i think i still have the patterns i made to cut the glass it should give u a really good idea of how much glass ur gonna need.

 

[demolition_x]

def will. i'll give you a call or something. heading home next Friday

 

[ANT]

Get 5yards of knytex. and a gallon set and quart set of the foam. I did that and I had enough to re-enforce my hull, and in the rear before i put foam in too, the handlepole bracket area, the nose, and glass the tray back up with 4layers of kyntex over the whole tray, and make a new hood baffle for my squarenose hood, and had some glass left over. I ran out of the gallon and finished it off with the quarts of foam when I refoamed. It was also all done with a gallon of west system resin and a quart of west system hardener along with using it for 404 body filler. If you go the route I did you will have spent just about $200 in materials, but it's worth it because they go a long way.

 

[SJet]

Ant

How many cu ft of foam did you use? 2,3 or 4lb foam?

 

[ANT]

Ant

How many cu ft of foam did you use? 2,3 or 4lb foam?

4lb density

 

[accbr]

I used 4lb foam, and bought the 4 cubic feet kit from uscomposites. I had some left over.

 

[ANT]

Ant

How many cu ft of foam did you use? 2,3 or 4lb foam?

O and I ordered a 16lb Kit and a 4lb kit and used all of the 16lb and a little of the 4lb

 

[jetskier79]

Definitely buy extra supplies. Having fiberglass on hand is never a bad thing.

 

[Matt_E]

I completely refoamed my roundnose with about 2/3 of a 5 cuft kit of 3lb foam.