Zingaro is wrecked

[44'cruisingcat]

Originally Posted by RaymondR

Few days work.

Pull it all back in place. Whack a bit of woven roving over the torn bits. Install fillets to properly tie the hulls to the bridge deck. And, they'll be back sailing in a week.

Not woven roving, that's very old school/monohull. Stitched Multiaxial uni glass cloth is better.

I agree though, the boat is fixable. If it were me I'd definitely incorporate chamfer panels, which would massively increase strength as well as improving hull access.

Probably the rear beam would be the difficult part, with tighter access.

[skenn_ie]

Thankfully there is still room for adventurers in this world. Some people want to eliminate that completely. Be careful people, and dont take unnecessary risks. Seek the advice of more experienced people, there are plenty of mistakes to be made without repeating other people's.

[skenn_ie]

Multi-axial uni ? I presume that means several layers of uni, each running in different directions. WHy ? Uni in the direction of maximum stress.
My superstructure is bid' with 4" overlaps.

[44'cruisingcat]

Originally Posted by skenn_ie

Multi-axial uni ? I presume that means several layers of uni, each running in different directions. WHy ? Uni in the direction of maximum stress.
My superstructure is bid' with 4" overlaps.

Uni in multiple directions can handle stresses in multiple directions. For instance the glass on my mast beam is heavy quadraxial uni. Heavy fibres running at 0, 45, 90 and 135 degrees. Can handle big loads in any direction.

Woven roving is ok for waterproofing.

CSM not much good for anything. Maybe for bulk.

[Franziska]

The big advantage of multiaxials (=several layers of UD stitched together at different angels) is that it reduces fiber crimp (=in lament terms cloth stretch). All load carrying fibers are flat alongside each other.
When a load is applied they take the load almost fully.

Fibers in a woven cloth are woven over and under in a wave like pattern. When the load gets applied they tend to give a little before bearing the load.
This reduces also their bond within the resin matrix to some extent.

The other advantage of multiaxial fiber complexes (and woven roving) over chop strand mat is that they can be wetted out with catalysed resin before laying them down.
In the case of mat that is only possible to some extend, because the resin breaks down the fibers within the mat when applied.

Chop strand mat (=CSM) is good for low loaded parts with complex shapes. When the binder is broken down the fibers can easily align themselves with the surface underneath.

CSM should only be used with Polyester or Vinylester resin as it contains the solvent to break down the binder.
Epoxy does not have that solvent.
Woven roving and uni or multiaxials are best used with Epoxy or Vinylester to get most out of their superior mechanical properties.

[jmh2002]

@Franziska

[StanM]

https://www.kickstarter.com/projects...the-web-series

3 day left for Zingaro II Kickstarter campaign.

[ausnp84]

Just working through the Zingaro YT series as we're off to see a ply / epoxy catamaran this weekend, and I'm starting to see why the boat was lost.


Three groundings to date, sheared rudders, snapped dagger boards, HEAVY sustained slamming of the bridgedeck, questionable grounding repairs that resulted in having to re-do a lot of those repairs... and we're only about 10 episodes in so far.


Or have I missed something?



n

[Pete7]

Originally Posted by ausnp84

Or have I missed something?

n

I hope to sail until I end up in a nursing home without having half of those problems. I did run aground in my first boat, kind of learnt from that.

What are you viewing?

Pete

[ausnp84]

Originally Posted by Pete7

I hope to sail until I end up in a nursing home without having half of those problems. I did run aground in my first boat, kind of learnt from that.

What are you viewing?

Pete

Haha yep, I did the same - a couple of light, sandy groundings in the Bahamas. Zingaro really beat the sh*t out of that boat..


Off to see a Punch catamaran, and then maybe a Kelsal 450. Both ply/epoxy, built this side of 2000, and kept down in the Med. Will be nice just to get out of here and on a plane again!


n

[StanM]

The boat was not lost. They brought it into port and then sold it.

https://www.youtube.com/watch?v=F3abmpJkcDo

[Matt Johnson]

Originally Posted by ausnp84

Haha yep, I did the same - a couple of light, sandy groundings in the Bahamas. Zingaro really beat the sh*t out of that boat..


Off to see a Punch catamaran, and then maybe a Kelsal 450. Both ply/epoxy, built this side of 2000, and kept down in the Med. Will be nice just to get out of here and on a plane again!


n

Let us know how the Kelsall is in person! I tried getting info from the owner, but received only out of focus close-up photos or short videos of equally useless value. On the 4th or 5th try I gave up.



Matt