aluminium project

pop · 24 January 2007, 11:16

Hi ribsters

I have been looking for a good aluminium welder for the last (3 months

) and I have found one

, I am going to build a 10-12m rib with a little help from Adam Younger.

The conditions the rib will be running in are on average 3m but get up to 4-5m with not much trouble, the rib will have no transom and be a self draining deck.

I am in two minds about Jets or surface drives; I can’t have stern drives as the sea creatures get in, on and around creating a major maintenance problem for me. If anyone has some pros and cons it would be great?

I plane is to put a list of everything I can think of on here in the next few days, everyone’s ideas would be much appreciated. Then is a letter to Adam and I hope to get the drawings underway within a month. Exciting times.

Thanks

pop · 24 January 2007, 20:50

i thought at least coders could give an opinion

Hightower · 24 January 2007, 20:58

Quote:

Originally Posted by pop

i thought at least coders could give an opinion

Don't think he talks to Kiwis

, much prefer to eat em.

Be sure to post the build as this sound like an interesting project. Are you having it built in UK or New Zealand

pop · 24 January 2007, 21:20

Hightower

The rib will be built in NZ, i will post all pics from start to finish on ribnet. I am just getting the last few idears ironed out before i ask Adam to do some drawings.

i will be instaling 2x cats 3126b but with hamilton jets or surface drives? have you any experiance with this set up?

Hightower · 24 January 2007, 22:35

Absoloutely not! I have driven Pressman, that was a lot of fun.

codprawn · 25 January 2007, 00:53

Quote:

Originally Posted by pop

i thought at least coders could give an opinion

Sorry missed this thread.

Sounds like you are describing an Ocean Dynamics to me - as designed by the late - great - Shaun White.

Still built by the same people - they do self build hulls etc as well - could save you a hell of a lot of work!!!

http://www.mustangmarine.com/ribworker/index.htm

Jets and no transoms as standard. They even do one that looks cool.

pop · 25 January 2007, 01:32

codprawn

Shaun White did a great job with ocean dynamics, however i want somthing a little faster.

At the price they charge i won't be going anywhere near them, aluminium is cheaper here so its best i build myself, don't worry i am not building alone, i found a good ali boat builder and we got a little deal going.

has anyone been on the ( http://www.technohull.gr/profile.php?lang=en )? it would be great to hear how the hull is? what it handles like? i am looking at a completly different rib but Adam designed it and i would like to hear any information about his work.

codprawn · 25 January 2007, 03:47

Heard nothing but good reports about Adam and his designs. I don't think aluminium lends itself very well to fancy hull shapes like GRP though.

A lot depends on usage regarding drives. Surface drives are great for long fast runs in calmish waters - jets are better for shallow water etc etc. Just a thought but has anyone ever built a RIB using normal shaft drives? For all round use there is still little to touch shaft drives.

pop · 25 January 2007, 04:21

Thanks coders

i would automaticlly instal hamiltons but they take up so much of the boat, i have sterndrives at the moment and every week i have to get it out of the water and get the trustee leatherman and scrape the bastards off. i am not so keen on surface drives and shaft driven would not get the speed i desire. do you know what the maintance is like on surface drives?

they messed it all up with the aircraft wingon pic above, i like the solent rescue rib the best-to me it just says get out the way.

pop · 25 January 2007, 21:11

Hi people

does anyone know of these guys (http://www.pulsedrive.net/index.htm)? they have fitted a scorpion out and few other ribs.

Matt · 25 January 2007, 22:26

Have you told buzzi where he's going wrong?

Quote:

Originally Posted by codprawn

Surface drives are great for long fast runs in calmish waters

John Kennett · 25 January 2007, 22:26

Quote:

Originally Posted by pop

does anyone know of these guys (http://www.pulsedrive.net/index.htm)? they have fitted a scorpion out and few other ribs.

That was a few years ago, and they don't seem to have been very popular. There's a bit more information (mainly negative and speculative) here: http://www.rib.net/forum/showthread.php?t=1786

How about Trimax?

John

codprawn · 25 January 2007, 22:33

Quote:

Originally Posted by MadMat

Have you told buzzi where he's going wrong?

No but I haven't seen many boats in the North Sea using surface drives....

codprawn · 25 January 2007, 22:35

http://www.arneson-industries.com/

These are prob the biggest makers of surface drives.

There was also an interesting looking drive fitted to a Pascoe at Ribex one year - can't remember the name - think they were Scandanavian origin. JK will know as I posted photos of them when he asked a while ago.

Matt · 25 January 2007, 22:35

What drives did the round britain bladerunner have?

Matt · 25 January 2007, 22:36

Even you should know that oil rigs don't plane very well.

Quote:

Originally Posted by codprawn

No but I haven't seen many boats in the North Sea using surface drives....

John Kennett · 25 January 2007, 22:48

Quote:

Originally Posted by codprawn

There was also an interesting looking drive fitted to a Pascoe at Ribex one year - can't remember the name - think they were Scandanavian origin. JK will know as I posted photos of them when he asked a while ago.

Eco-drive I think. Brief mention here: http://www.rib.net/forum/showthread.php?t=5779

How about the Yellowfin VSD? I don't know when it's going to be on the market but they seems to have quite a few prototype installations. More here: http://www.rib.net/forum/showthread.php?t=16844

John

pop · 25 January 2007, 22:59

Ok i think my mind is made up on this one, jets are the way to go. The best jets "Hamilton" are made in NZ , easy for parts plus there local so thats what ill be using.

the problem i face then is getting over 50kts, hamilton say its pretty hard

. pressmans ribs has a hamilton do you know what speed he gets (around 35-40)

Read a few past post about jets and Alan Pridy thinks they are crap in a big swell. I went out on a jet boat a week ago and it was blowing 40kts but here that means around 5m, geuss what? it was fine, whats he on about? have you experianced Jets going to pot in a side on swell? i have spoken with a few manufacturers that have installed hamiltons and they all seem very happy.

codprawn · 26 January 2007, 01:37

Don't know about the best - KaMeWa jets are pretty good - owned by Rolls Royce.

http://www.rolls-royce.com/marine/pr...ts/default.jsp

pop · 26 January 2007, 02:05

have you used both then coders? i have not seen many ribs with Rolls Royce jets. hamilton seem well used in NZ's commercial relm, i have to say i am not an expert on jets so all comments are taken into consideration.

madmat do you run on surface drives?

Jhon i am right in thinking the yellow fin never got off the ground, am i not?

thanks