rib hull fiber diameter/layer number

[MatFromPoland]

@Xk59D - when you ask professional boat builder in Poland to add some layers they will answer - SORRY NOT POSSIBLE.

Customer can select material/construction type (i'm not specialist like sandwich or something like that) but can not ask for more layers.

Number of layers and thickness determine construction/material/material maker/"approved standards" and each process validate some marine industry agency.

I will start to ask them about:
- material
- hull construction
- reinforcement construction

And what norms boat build standards they follows. But still I'm unsure if customer (not specialist) shall interfere.

If you have any norm/standard/document approved in your country for boat builders you can ask them to follow it (not sure how you can be sure if they follows).

If you ask for heavier hull Good Lord knows what they can do to make it heavier (some bricks maybe)

>>>>>>>>>>>>>>>>>

On Boat Shows in Poland many customers in "Gold age" complains that 20 y ago boats were better because hull was heavier more thickness ...

[Xk59D]

Originally Posted by MatFromPoland

@Xk59D - when you ask professional boat builder in Poland to add some layers they will answer - SORRY NOT POSSIBLE

This "Professional" boat builder in China clearly has other ideas.

[MatFromPoland]

If they open for anything why not send them documentation "how to make boat for me" based on some approved industrial norms ... plus list of materials. But who will supervise their work.

[sameh]

Originally Posted by MatFromPoland

@Xk59D - when you ask professional boat builder in Poland to add some layers they will answer - SORRY NOT POSSIBLE.

Customer can select material/construction type (i'm not specialist like sandwich or something like that) but can not ask for more layers.

Number of layers and thickness determine construction/material/material maker/"approved standards" and each process validate some marine industry agency.

I will start to ask them about:
- material
- hull construction
- reinforcement construction

And what norms boat build standards they follows. But still I'm unsure if customer (not specialist) shall interfere.

If you have any norm/standard/document approved in your country for boat builders you can ask them to follow it (not sure how you can be sure if they follows).

If you ask for heavier hull Good Lord knows what they can do to make it heavier (some bricks maybe)

>>>>>>>>>>>>>>>>>

On Boat Shows in Poland many customers in "Gold age" complains that 20 y ago boats were better because hull was heavier more thickness ...

I agree with you here. Even though i believe it is agood boat, still they are china minded.
But To be more fair to them, their flexability here was only because there is my expert friend in the middle who has the boat in picture who asked for this based on his experience with his boat. They were not ready for anything else.
By the way, i have read that there are some users who expect higher than standard quality and strength who get the builder makes stronger version specially for their needs. I know it is not a 100% correct acomparison with this situation but it may justify some.
Anyway, should wait to see final product.

[sameh]

Originally Posted by MatFromPoland

In Poland we have plenty boat builders.
I'm not expert but friend of mine (who makes GRP boats) told me that material and material maker determine thickness and process.

The same size small boat (for example 4,4m) you can buy for 1000 GBP and 4000 GBP in Poland directly from the factory. It is very common that this cheaper not survive more than 2 years. Many cracks on the hull and other problems (rust also). This more expensive is epoxy and very carefully made (A4 steel, good wires, rigging). And some people report that it can survive serious accidents on the water.

If you unsure about hull quality why not consider ALU hull. Not sure if you have Highfield dealer near you. It is from China but have WW dealers. I will not tell that it is best boat. Brand exists only 5 years. They make 5000 boats in total during these 5 y. You can buy hypalon version.

>>>>>>>>>>>>>>>

This friend of mine checks and supervise all hulls production. He told me that even small bubble can be dangerous. Workers are experienced but he supervise them constantly.
Now he has been started to make carbon fiber boats (small speed boats) and it require even much more detail work.

I was thinking about Aluminum hulls,
Was very very impressed by x mars ribs of eehai xiangda,their reputation was very good as i heared but their x mars start with 5.8 meters and cost more..but they are looking fantastic!
So i gave up the x mars and didnot think anymore about china products untill saw my friend boat and got recommendation for that type (actually, now they produce wider beam type, 534 cm instead of my friends 510)

[sameh]

Originally Posted by Xk59D

that looks a very shallow V, that will be extremely bumpy in anything but a very light chop, are you okay with that?

adding more layers won't hurt anything so ask them to add 4 if that makes you comfortable.

Very shallow v? Serious?
Let me add few things that may give better picture:
This boat is only half inflated.
Tubes are 60cm diameter due to special request of the owner. Original model 50cm. I will order 50 cm. I wont have plays in this design.
Boat reported to be very stable and unbumpy. So either i am not fully understand what deep v is or picture is misleading or trully the boat has no deep v? Will be happy to here what others think?

[sameh]

Adding few pictures for the boat and v, in my opinin at least intermediate v..but not shallow.

[sameh]

Originally Posted by MatFromPoland

If they open for anything why not send them documentation "how to make boat for me" based on some approved industrial norms ... plus list of materials. But who will supervise their work.

I had some demands documented. For the hull its only adding 4 layers.
But important to our hot climate is oval tubes with no conus part with no plastic or whatsoever part glued to the tubes..we have ribcrafts, quicksilver and other well reputation companies come to my freind after those parts seperated in hot summers. Only boat not having this ilness was the zodiac!!!

[MatFromPoland]

This is mine 24 degree (sorry it is under cover and it is the only one picture from the front which I have):



Do you have any technical data ? It have to be "dead rise" or something like that
Please find mentioned below technical data of mine plus some drawing
Deluxe 540 - Highfield Boats

[sameh]

Originally Posted by MatFromPoland

This is mine 24 degree (sorry it is under cover and it is the only one picture from the front which I have):



Do you have any technical data ? It have to be "dead rise" or something like that
Please find mentioned below technical data of mine plus some drawing
Deluxe 540 - Highfield Boats

Matt? Started browsing highfield web but have some work to do..
Am very anxious: did you say it is chinese boats?
Can you guve indication for their prices?
Web looks impressive.

Will go deeper in a couple of hours but meanwhile will love to hear from you about the boat and prices. You can post me in private if you want.

See some pictures for the mould of boat in factory i was thinking ordering from..
Non deadrise angle indicated but i admit that even many uk ribs dont indicate deadrise angle..so it is agoodsighn highfield doe so..

Well be back

[Xk59D]

Originally Posted by sameh

Adding few pictures for the boat and v, in my opinin at least intermediate v..but not shallow.
Attachment 118063Attachment 118064Attachment 118065

Yes that is shallow V Imo for the size of the boat, if you are happy with it then fair enough.

There is nothing wrong with a shallower hull if where you boat or type of boating you intend to do suits that. They burn less fuel so has some benefit.

However, it will be bumpy without question. With my old Avon if it got to maybe 3ft waves you were slamming a little but manageable, anything more and I was coming home at displacement speed. I still come home at displacement speeds now with a deep V bit it is far less often.

Maybe where you come from that would pass as an intermediate V, it is all relative to what you are used to.

I came from a cabin boat to my last rib which had a similar looking Hull shape to your rib here and it was of a similar size so I have some experience of the pros and cons at this sort of size.

[sameh]

Originally Posted by Xk59D

Yes that is shallow V Imo for the size of the boat, if you are happy with it then fair enough.

My friend is happy but if that is not deep v and mine will be the same (mine is wider beam so i should request clear photoes for the v to see if is different) then i would think again and probably withdraw from that deal! I have no problem to admit that! Better now than too late.

[MatFromPoland]

There is not any secret about HIGHFIELD boats I think, there is dealer locator on the website. Importers - Highfield Boats

I'm not expert but after some well know RIB makers asked for double price for ALU boats (like RIBCRAFT) I decide to buy ALU. I did drop email to RIBCRAFT but they use ALU for bigger boats only. I did buy mine in 2014 after Southampton boat show (thanks for this forum and pictures made by RIB.net users on this forum). On these days it was really good price for them. I have imported it from UK importer (now there is new one but the same person). Here you have prices in UK (not sure if they are still valid)

Deluxe

You can read that they are descent of some Australian RIB's but I did not check this history (it can be true or marketing). It is good for my needs
- I do like simple design and "work" look
- with 115 HO Evinrude my cruise speed is 45 - 49 km/h (3800 RPM - 4000 RPM)
- petrol consumption in this RPM range (Steel Rebel 19" prop) 2km per 1liter
- max speed is about 69 km/h
- it can carry my family (5 people)
- I tow it every year to Greece/Croatia

I'm not qualified person to valuate this RIB.
It is my first RIB in my life even I'm old (almost 50).
She behave really good in Greece (always wind and some waves) I can go 40-45 km/hr of course depending on waves size.

http://www.rib.net/forum/f53/warsaw-...0dl-68645.html

http://www.rib.net/forum/f53/2016-ex...n-71213-2.html

If I own it 10 y I can say go and buy.
But mine has only 2 seasons (2x2months in Greece/Croatia) and company has only 5 y.

[Xk59D]

Originally Posted by sameh

See some pictures for the mould of boat in factory i was thinking ordering from..
Non deadrise angle indicated but i admit that even many uk ribs dont indicate deadrise angle..so it is agoodsighn highfield doe so..

Well be back
Attachment 118066Attachment 118067

If that is the same hull shape you are getting then bumpy is being kind to the expected performance I would suggest.

[Xk59D]

Originally Posted by sameh

My friend is happy but if that is not deep v and mine will be the same (mine is wider beam so i should request clear photoes for the v to see if is different) then i would think again and probably withdraw from that deal! I have no problem to admit that! Better now than too late.

Wider beam will make it worse!

That boat is literally flat at the back, in anything but a light chop you will be travelling at displacement speeds I suspect. Again, you will just need to boat within the constraints you have, all boats have them the only difference is what and where they are.

[matt h]

There is basically no hull what so ever .You may as well bolt en engine on a plank of wood and no better than a pond tender.
You been given advice from a lot of experts. Take heed.

[sameh]

Originally Posted by matt h

There is basically no hull what so ever .You may as well bolt en engine on a plank of wood and no better than a pond tender.
You been given advice from a lot of experts. Take heed.

Didnot understand whst you mean. Do you mean this hull is worth nothing?

[69cmw]

Originally Posted by sameh

Didnot understand whst you mean. Do you mean this hull is worth nothing?

Correct [emoji106]

[sameh]

Looks like i need a lesson here. Ddeadrise doesnot seem great here but thought it is similar to some well know boats..

[Ceejay]

Originally Posted by matt h

There is basically no hull what so ever .You may as well bolt en engine on a plank of wood and no better than a pond tender.
You been given advice from a lot of experts. Take heed.

I began to wonder quite some time ago if this gentleman is just having a laugh, he surely after all this time can't be serious.