boom constructions ..
along the curve on one side of the bom thiere is a small crack apearing as i sail i can feel it open nd close up i can also feel the top half seperate from the bottom half . its a nielpryde x9 i think are they made in 2 halfs joined horizontaly or made some other way so thier isnt a join . would it ork to strip the grip off and wrap a layer or 2 around the crack ? anny idear

The booms not made in 2 halves, it's the glass jacket, the carbon part is predominantly axial carbon

you're on the right path with the repairs, but you won't need to wrap the boom just overlay the crack will do the job.

Get some 25mm Carbon tape

Dress back 13mm either side of the crack, there is a thin wrap of glass you need to remove this as this is where the carbon tape will sit, don't remove the whole lot

When you do the epoxy work use peel ply and wadding, overlap the peel ply around the wadding at the back of the repair, wrap the whole lot tightly in masking or packaging tape, I found clear packing tape allows you to see whats going on.

If you want to err on the side of caution you can do a couple of overlaps to add extra strength.


I did all my repairs including strengthening the head area, only to destroy the boom (3 breaks) on my second outing, my repairs held all the other bits together.
Didn't help my ribs though

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elmo said...

The booms not made in 2 halves, it's the glass jacket, the carbon part is predominantly axial carbon

you're on the right path with the repairs, but you won't need to wrap the boom just overlay the crack will do the job.

Get some 25mm Carbon tape

Dress back 13mm either side of the crack, there is a thin wrap of glass you need to remove this as this is where the carbon tape will sit, don't remove the whole lot

When you do the epoxy work use peel ply and wadding, overlap the peel ply around the wadding at the back of the repair, wrap the whole lot tightly in masking or packaging tape, I found clear packing tape allows you to see whats going on.

If you want to err on the side of caution you can do a couple of overlaps to add extra strength.


I did all my repairs including strengthening the head area, only to destroy the boom (3 breaks) on my second outing, my repairs held all the other bits together.
Didn't help my ribs though

That was a good repair job Elmo & a nice new regrip wasted

this arvo i taken of the boom head/clamp and striped some of the grip .. this is some cracking under the bom clamp area and looks like some delamination.. the plan is to get the grip of 450mm down each side scuff up the area and send it to the boat builders to get 1 layer under the boom head a nother going down 200mm each side and then a nother layer going the full450 down each side . then vacume bag it .. then regrip it ..??

i'm not saying anything.

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Paul Kelf said...

elmo said...

The booms not made in 2 halves, it's the glass jacket, the carbon part is predominantly axial carbon

you're on the right path with the repairs, but you won't need to wrap the boom just overlay the crack will do the job.

Get some 25mm Carbon tape

Dress back 13mm either side of the crack, there is a thin wrap of glass you need to remove this as this is where the carbon tape will sit, don't remove the whole lot

When you do the epoxy work use peel ply and wadding, overlap the peel ply around the wadding at the back of the repair, wrap the whole lot tightly in masking or packaging tape, I found clear packing tape allows you to see whats going on.

If you want to err on the side of caution you can do a couple of overlaps to add extra strength.


I did all my repairs including strengthening the head area, only to destroy the boom (3 breaks) on my second outing, my repairs held all the other bits together.
Didn't help my ribs though

That was a good repair job Elmo & a nice new regrip wasted

An extremely nice re-grip, that material used was excellent, shame it wasn't strong enough to resist a 90+kg muppet

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Gestalt said...

i'm not saying anything.

We know Gesty you are a man of few words, but one wonders how ones Daughter managed to get hold of a NP catalogue

docs asked me the same question.