Hull Damage Question

Can't he burn test it?

 

I hit like, but then decided no.

I realize Gerr is way overkill, but it would be my pleasure to put the hull into the Gerr calcs.

I bet it is too thin (with the mat adders). So that means it is WAY too thin.

Dave-mat does not add the same amount of strength as other glass fabrics. So, mat added might get the hull closer to a specified thickness, but doesn't add enough strength.

 

Something that thin, is going to bust against the nearest hard points, like stringers, and the "keel", when force is applied locally. I once had a power cat that I drilled throw the wet deck to put a towing eye further forward, it was 1 inch thick solid glass, and a smaller boat than this one.

 

If he burn tests or sends the coupon to a lab; he is going to find the glass schedule is insufficient.

That said, lifting near the keel like that on one side of the keel could be trouble for any boat.

My vee forward section is 9" wide of 0.165" thick solid glass no mat and I never lift on any part of it unless I am lifting under the keel and preferrably under one of the two forward bulkheads.

These chines, if well inspected, are probably, not reinforced well enough with strength tapering away.

When you look at the keel break; it breaks right next to the center. This means the center is weak and insufficient glass. Had the keel been well built; the break from too much weight would have been further outboard.

 

Would an ultrasonic thickness gauge be of use to check all other areas ( and the starboard side beside the hole cut out that i think is a lot thicker ) be a good investment or maybe rent? If i get one part of the boat fixed and get cracks elsewhere, there is no point spending the money to fix. I could see if my surveyor, or others have them. My semi local boat builder thought that sending the sample coupon away for testing would not prove much, other than it is thin. He talked about the burn off thing also .
I am off to my shop, will check in tonight for comments. Happy Thanksgiving! (Canadian Thanksgiving was Oct. 12th , and is not as a big deal like the U.S.)

 

Get a surveyor in there to pull his own coupon and send it into a lab that can do a report for the courts for burn testing.

Ask or hire a naval architect to draw up a laminate schedule using coremat and the materials in the coupon and determine the insufficiency.

Contact Rangertug with the info. They probably already know or may have had a production error. On the off chance they want to remedy; agreements in writing. On the better chance they do nothing, take the information public.

Do it on a different webpage. Clean and concise. Searchable.

That looks like a weak laminate.

I'd also email Rangertug a picture of your caliper measurements and ask them if that is standard or if they want to take any action. Demand nothing. Just be polite and ask them if they had a production problem. They may have..

 

A burn test only tells you the resin to glass ratio, if they salvage the glass they may tell you which fabric was used. It won't determine if the laminate was strong enough.

It would need to be compared to the actual laminate schedule used in production.

 

Fallguy , the Factory and the dealer are not taking my calls or answering my emails . I was basically told the last correspondence i had with them , to go away . I asked again for the Repair Procedure that they drafted for me ..... but won't share it with me . I do not get any response to my emails . They will not share their laminate schedule .

 

Then take all your findings public.

Do you know anyone in the US?

 

I do have some contacts in the U.S. The new hull core sample pictures and a video of it being cut out , should be on my website this weekend sometime . www.rangertugtruth.com

 

Okay, so when I watched the video, I see a blemish that does not look like a factory blemish.

That looks like a repair.

 

Also, I think you need a new video.

The boat was not likely 'put down hard'. That laminate is probably, almost certainly too weak to support the lifting done. Someone lifted it with a stand and it broke. They may have lifted a hair more in that location and unintentionally broke her not realizing the laminate was so poor (we assume poor based on coremat).

 

I have a new video of the core sample being cut out ( Monday Nov. 23 rd ) . I tried to load it here , but doesn't seem to stay . It should be on website later on Sunday the 29 th . Thanks

 

NEW Video now live ( plays right after old one ) and larger , core sample pictures on www.rangertugtruth.com

 

So what did the sample reveal ? Any woven or unidirectional material ?