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Old 24 January 2007, 06:16   #1
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aluminium project

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
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Old 24 January 2007, 15:50   #2
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i thought at least coders could give an opinion
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Old 24 January 2007, 15:58   #3
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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
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Old 24 January 2007, 16:20   #4
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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?
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Old 24 January 2007, 17:35   #5
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Absoloutely not! I have driven Pressman, that was a lot of fun.
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Old 24 January 2007, 19:53   #6
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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.
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Old 24 January 2007, 20:32   #7
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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.
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Old 24 January 2007, 22:47   #8
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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.
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Old 24 January 2007, 23:21   #9
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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.
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Old 25 January 2007, 16:11   #10
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Hi people

does anyone know of these guys (http://www.pulsedrive.net/index.htm)? they have fitted a scorpion out and few other ribs.
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Old 25 January 2007, 17:26   #11
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Have you told buzzi where he's going wrong?

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Surface drives are great for long fast runs in calmish waters
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Old 25 January 2007, 17:26   #12
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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: New Scorpion

How about Trimax?

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Old 25 January 2007, 17:33   #13
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Have you told buzzi where he's going wrong?
No but I haven't seen many boats in the North Sea using surface drives....
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Old 25 January 2007, 17:35   #14
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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.
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Old 25 January 2007, 17:35   #15
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What drives did the round britain bladerunner have?
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Old 25 January 2007, 17:36   #16
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Even you should know that oil rigs don't plane very well.

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No but I haven't seen many boats in the North Sea using surface drives....
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Old 25 January 2007, 17:48   #17
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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: Revenger 715

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: Anyone Fitted Yellow Fin?

John
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Old 25 January 2007, 17:59   #18
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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.
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Old 25 January 2007, 20:37   #19
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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
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Old 25 January 2007, 21:05   #20
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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
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