Floor and stringer replacment

[slim6969]

Re: Floor and stringer replacment

will the wood not suck up the resin? if not why do all kinds of boat repair shops do this and why is there more then one post with ppl telling the op to do this ?

 

[Woodonglass]

Re: Floor and stringer replacment

Resin 101!!! Polyester resin requires the use of Fiberglass Mat and Fiberglass cloth to yield the waterproofing and strength required for restoring your boat to her Hopefully "Better than Original" Self. Epoxy does NOT require mat but it is recommended that you use some cloth to yield more strength to the construction. When using any resin you always fill any visible voids in the wood especially on the edges and then apply a thick coat of "Slow Setting" resin (go a little light on the MEKP so it won't set as quick) and allow the wood to soak it in. In the case of Poly resin you then apply another Wet OUt coat of resin and then immediately apply the fiberglas mat totally saturating it with the resin. Poly resin contains Sytrene which acutally Melts the fibers of the mat an causes the mix to meld together and obtain some strength. It is then advisable to apply a layer of Cloth (biaxial is the preferred but you can use the Old School Woven Roving too) using the same method of wetting out the substrate and then applying the cloth. Making sure that the mat or the cloth does not develop air bubbles and cavities. As OOPS (professional boat restorer and one of the most knowledgeable on fiberglass repairs here on the forum) said you should never use poly alone. It will crack and allow water penetration. Epoxy on the other hand can be used as a stand alone product, but again the use of cloth is advised.

As to the support of the hull during reconstruction. It is imperative that you do everything possible to maintain the hulls shape. Accurate measurements should be taken to ensure it does not flex in any direction. This is really critical of the top cap has been removed in order for it to be reinstalled later. If if the cap stays on, the hull needs to maintain its shape or it will effect the handling of the boat if any deflections occur during the rebuild. I strongly advise anyone doing stringer repair to do everything possible to support the hull and keep it from moving.

 

[Yacht Dr.]

Re: Floor and stringer replacment

after i finished the stringers i put in new bulkheads 3/4 plywood. I used cardboard to a pattern to asure a perfect fit to the bottom of the boat. used it to mark wood worked great! Put resin on the edges and on the hull,butted it up against the stringer and put a cleat on both sides sandwiching each end in and screwed them to the stringer and the bulk head. Everything i have done i have resined togeather. This sucker is solid and will never rot again!!!

Im sure he is saying that he Glassed everything together .. not just used Resin as a glue-joint ( I dont even think it would be possible lol ).

I think we should Move on from this point in the resto. ( assuming that everything was Glassed ).

On or off the trailer is a moot point now..he is too far into it. I personally think that for a 19 foot hull that you would have to Try to deflect the hull. As long as it was reasonably straight on the trailer then you should be fine.

In production..they pop them raw glassed hulls out of the mold..then they put them on wheeled gurney. .. ( basically a 4-6 wheel cart with Bunks ) that gurney moves from location to location in the plant for installation of bulkies/plumbing/through hull fittings etc. The hull does not deflect as much as you think.

Lets get ready to Deck this puppy so it sees some water this season ..

Pics would Really help Mason .. I think you could have eliminated Half of the posts here if you would just put up some pics.

YD.

 

[stonemason66]

Re: Floor and stringer replacment

Im sure he is saying that he Glassed everything together .. not just used Resin as a glue-joint ( I dont even think it would be possible lol ).

I think we should Move on from this point in the resto. ( assuming that everything was Glassed ).

On or off the trailer is a moot point now..he is too far into it. I personally think that for a 19 foot hull that you would have to Try to deflect the hull. As long as it was reasonably straight on the trailer then you should be fine.

In production..they pop them raw glassed hulls out of the mold..then they put them on wheeled gurney. .. ( basically a 4-6 wheel cart with Bunks ) that gurney moves from location to location in the plant for installation of bulkies/plumbing/through hull fittings etc. The hull does not deflect as much as you think.

Lets get ready to Deck this puppy so it sees some water this season ..

Pics would Really help Mason .. I think you could have eliminated Half of the posts here if you would just put up some pics.

YD.

I did use glass where structure was needed. But i coated my plywood on the under side and the few other places. I mostly used woven fiber mat or what ever you boat guys call it.

 

[stonemason66]

Re: Floor and stringer replacment

I am a bricklayer but im not completely retarded (however my wife sometimes thinks so). I do know a few things about structure.

 

[stonemason66]

Re: Floor and stringer replacment

 

[Woodonglass]

Re: Floor and stringer replacment

What resin did you use? What weight of Cloth or Woven roving did you use on the stringers and Bulkheads? How many layers?

 

[rickryder]

Re: Floor and stringer replacment

CSM chopped strand mat.... I guess that's what your sayin you used

 

[stonemason66]

Re: Floor and stringer replacment

looks just like the stuff you used on the four winds. I checked your restore picks. looks perdy damn good!!!

 

[rickryder]

Re: Floor and stringer replacment

Why thank you sir I used a mix of CSM and 1708 biax cloth



Biax has a diagonal weave with 3/4 oz csm sewn to the back side....very strong glass

 

[pyrotek]

Re: Floor and stringer replacment

I am a bricklayer but im not completely retarded (however my wife sometimes thinks so). I do know a few things about structure.

lol

 

[joe_nj]

Re: Floor and stringer replacment

the boat should not be on the trailer when redoing the stringers and floor it might look all good with the boat siting on it but there mught be a roller/ bunk pushing up on the boat you do not see once you put glass over it and it has cured that bump is there for life

I am replacing the deck on my bowrider and repairing the stringers and bulkheads. It's an 17 foot, 2700 pound cobalt siting on a roller trailer. How would I take a 2700 pound boat off the trailer? How would I get it back on?

 

[rickryder]

Re: Floor and stringer replacment

Hi Joe

It would be best to start your own thread on your boat and not hijack someones thread with your questions....we will be more than happy to help ya out

 

[joe_nj]

Re: Floor and stringer replacment

I wasn't trying to hijack. Just didn't know the rules about related topics and starting new threads
. Thanks for the heads up.