laying up the hull

Sonar · 22 January 2010, 08:38

How many layers of Chopped strand mat or woven roven does it take for a rib hull.?

Is it chopped strand mat or woven roven ?

I worked in a factory in Gosport many many years ago making lifeboats they were all sprayed on.. Roven went through a gun with the resin and was all mixed together as it left the gun.
and then rolled out.

Then I moved onto Southampton and was making Mine sweepers. All woven roven there.

In between that i worked for a number of small firms making all sorts of g.r.p. items.

I am thinking maybe in the summer trying to get a mould to use or a hull and deck not joined.

paul tilley · 22 January 2010, 08:47

sonar i think you need to be more specific ,its like asking how many eggs to bake a cake ,how bigs the cake

Sonar · 22 January 2010, 08:55

Quote:

Originally Posted by paul tilley

sonar i think you need to be more specific ,its like asking how many eggs to bake a cake ,how bigs the cake

Say for a 6 mtr rib.
Sorry I guess the bigger the vessel the more lamination's required..

r mcdonald · 23 January 2010, 03:32

[QUOTE=Sonar;335951] Say for a 6 mtr rib.
Sorry I guess the bigger the vessel the more lamination's required.. [/QUO
my 5.4 searider had 7mm sides 9mm keel and 11mm at the bow when it was tested so I could use it for charter. That includes the resin but I dont know what type of glass was used eg csm/wr/biax. It also depends on strenght of the stringers and bulkheads and core you are going to use.
regards
rpm

r mcdonald · 23 January 2010, 05:18

Sonar
I am not a boat builder, but have almost finished building a 7.5m rib,
I just read alot of boat building books and asked a few friendly boatbuilders questions. You will find there are many ways to build a RIB. The hard bit is which way is the best way, there is no answer to that. Everyone has there own way.Reading this forum and other forums you can gain ideas but no one simple answer.
The picture is of my rib that I am building. I built it without a female mould.The only wood in it is the transom everything else is fibreglass.
Have a look at this link. It may answer some questions. good luck.

http://www.hotribs.com/06ribmakers/r...nstruction.htm

regards
rpm

biffer · 23 January 2010, 08:29

nice job, over here they have ruined everything, if your'e building a boat for yourself thats ok, if you start doing them to sell thats when RCD comes in, ce plates, you're not allowed to sell a new boat without one, or so they say! i've had something recently where a guy imported a boat from usa without a ce plate and he's having trouble insuring it, these twat's bugger up all our fun

Leapy · 23 January 2010, 08:37

Quote:

Originally Posted by biffer

over here they have ruined everything...bugger up all our fun

Isn't that a bit of a generalisation?

If I was to adopt a similar stance, would I presume you have no interest in safety of yourself or others, then?

biffer · 23 January 2010, 08:56

Quote:

Originally Posted by Leapy

Isn't that a bit of a generalisation?

If I was to adopt a similar stance, would I presume you have no interest in safety of yourself or others, then?

mmm,you would think so! let me go a bit further, BMIF, i think it's still called that, when you join as a responsible boat builder, your membership fee is related to your turnover, and when you need there support it ain't there, and it isn't getting better.
safety where it's neccessary, common sense always

Searider · 23 January 2010, 21:58

Some of the Carson moulds are for sale on Apolloduck

Resque · 24 January 2010, 09:30

have you seen this video?

http://www.youtube.com/watch?v=hBh9MSZk9iE

Nos4r2 · 24 January 2010, 10:17

Quote:

Originally Posted by biffer

safety where it's neccessary, common sense always

While I agree with you on that wholeheartedly there's unfortunately always an exception that justifies the rules in the eyes of the authorities.

Remember 'Big Yellow'?...

biffer · 24 January 2010, 18:44

Quote:

Originally Posted by Nos4r2

While I agree with you on that wholeheartedly there's unfortunately always an exception that justifies the rules in the eyes of the authorities.

Remember 'Big Yellow'?...

yes. and that's wot gives me the shyt's, been boating for close to 50years and i got some pencil pusher straight from uni telling me i've got to do a risk assessment to take my boat 10 miles offshore, wot the f$%^k do they know

The Garfish · 24 January 2010, 18:56

Quote:

Originally Posted by biffer

wot the f$%^k do they know

thay noe thay av gott yew bi de shawt an curliz

dats enuf nollij forr eny nobbur wot werks forr de guvvermint

Quote:

Originally Posted by biffer

been boating for close to 50years .......... i've got to do a risk assessment to take my boat 10 miles offshore

dats cuz sum nobbur mite tripp ovir yorr zimma fraym

gaRf

biffer · 24 January 2010, 18:59

Quote:

Originally Posted by The Garfish

thay noe thay av gott yew bi de shawt an curliz

dats enuf nollij forr eny nobbur wot werks forr de guvvermint

gaRf

u no it garf

Sonar · 28 March 2010, 08:18

Well I have now laid up the hull.
I was dreading it but it has not been to bad to do.

Sticky mess all over the floor 3 pairs of trousers 4 jumpers and countless pairs of laytex gloves.. 2 pairs of Shoes And a set of totally useless paper overalls.

Glass fiber strands everywhere I look And I guess some places I have not yet looked in.

I started with Chopped strand mat and then woven roven. set in alternate layers and finished with Chopped strand matt all 600 grm weight..

One of the pictures shows the bottom half of the hard nose /Deck

I think it is safe to say I will not be doing another one.But glad I did this one.

Cookee · 29 March 2010, 08:58

Quote:

Originally Posted by Sonar

Well I have now laid up the hull.
I was dreading it but it has not been to bad to do.

I started with Chopped strand mat and then woven roven. set in alternate layers and finished with Chopped strand matt all 600 grm weight..
.

You can get combi mat which combines chopped and woven - saves a lot of time!

chewy · 29 March 2010, 09:54

Quote:

Originally Posted by Cookee

You can get combi mat which combines chopped and woven - saves a lot of time!

Is this the stuff? How many layers would you need to get the same effect of CSM WR CSM?

http://www.ecfibreglasssupplies.co.u...e/default.aspx

Cookee · 29 March 2010, 14:56

Quote:

Originally Posted by chewy

Is this the stuff? How many layers would you need to get the same effect of CSM WR CSM?

http://www.ecfibreglasssupplies.co.u...e/default.aspx

Kitten says 'cos!

It's not as simple as that unfortunately, but like for like is a start!

chewy · 29 March 2010, 23:34

Quote:

Originally Posted by Cookee

Kitten says 'cos!

Whats Kitten saying cos for now?

Ian M · 30 March 2010, 07:43

Er, have I missed something? what mould are you using, or shouldn't I ask?
Good luck with the project; not sure whether I envy you or not