Who's hull is this?

[Eddy Johansen]

Originally Posted by Dirk Diggler

I'm sure I've commented on these before, but any how, this is all I know.

Poole Boat Park were agents a few years ago for Hydrosport, and had one with a Jonnyrude on it, can't remember what horsepower, but it wasn't huge. Problem was, once on the plane, it wouldn't steer, and they tried everything, including moving the console, tanks etc. The manufacturer even came over and tried, but he couldn't solve the problem, in the end, a much lower hp motor was fitted, and the boat was sold off cheap!

Dick,

I am glad to hear other peoples opinion, but please try to get out complete facts.

Poole Boat Park imported the second RIB555 ever made and they only imported 1 unit. That was because the owner, George, suddenly lost the rib-guy he had had for 15 years at the yard. So they simply didn´t have anyone with knowledge about ribs, and got out of that business. Actually the RIB555 was initially designed and created because George asked me to.

The "tripple 5" is a DOUBLE stepped 5,5 rib designed to take very, very small engines and get it going cheaply when you buy, and when you use. One well known franch magazine did a fuel consumption test, and found it can actually make 5km with only 1 litre of petrol at planing speeds. Bet you will not find any other 5,5m rib capable of that.

The 555 was not intended for the huge engines needed by most other ribs the same size. The engine Poole Boat Park tried to put on against my opinion was a 75 Evinrude which really pushed the envelope. I still have a GPS recording saying we topped out at over 44 knots which was not the intention with that boat. It simply was not in the water anymore. You could steer, jump waves, whatever. But it chine-walked at 41 knots+, which is perfectly natural for any stepped hull of 4,8m.

When I came over together with a DNV representative, our intention was not to "solve the problem", we simply came over to collect data and suggest what they should do. And we did. We suggested they put on a 50 or 60hp engine.

They opted for a 50hp making it a light, swift, resonably priced package. A couple of months later Simon Everett (which I reckon most of you know) did a write up on it, and he found it did what it was intended to do.

The boat on the picture is a RIB636 hull fitted out by BWM ribs. It is probably the best handling offshore hull ever made on a boat of it's size.

Anyway, I did create the RIB555, RIB636, RIB 464 and RIB808 so my opinions might be sligthly biased. But, today we are working on bigger boats (7,3m+) so I do not make those boats anymore, and I do not make any profit on sales of the old models today. I am not trying to sell boats here. Just want to put the record straight.

Have fun!
Eddy

[Leapy]

Originally Posted by Trolli

Looks a little bit like this

Bit of an unfortunate sign in the photo. Have Revenger gone down the pan?

[Dirk Diggler]

Originally Posted by Eddy Johansen

Dick,

I am glad to hear other peoples opinion, but please try to get out complete facts.

Eddy

I think your slightly bending the facts yourself.

Originally Posted by Eddy Johansen

Poole Boat Park imported the second RIB555 ever made and they only imported 1 unit. That was because the owner, George, suddenly lost the rib-guy he had had for 15 years at the yard. So they simply didn´t have anyone with knowledge about ribs, and got out of that business. Actually the RIB555 was initially designed and created because George asked me to.

Eddy

They only imported one, because it didn't perform as it should. I'm not aware of anyone working at Poole Boat Park with 15 years rib experience! They did however have a Evinrude main agent in the yard, who was given the impossible task of making it work.

Originally Posted by Eddy Johansen

The engine Poole Boat Park tried to put on against my opinion was a 75 Evinrude which really pushed the envelope.
When I came over together with a DNV representative, our intention was not to "solve the problem", we simply came over to collect data and suggest what they should do. And we did. We suggested they put on a 50 or 60hp engine.

Eddy

Hmm, so what your saying is that George over engined the boat. So what would the max kw be on the CE plate of that particular boat? Was it not you that suggested moving the console etc?

Originally Posted by Eddy Johansen

They opted for a 50hp making it a light, swift, resonably priced package. A couple of months later Simon Everett (which I reckon most of you know) did a write up on it, and he found it did what it was intended to do.

Eddy

Shame he didn't do the test when the bigger motor was on it! I went out in that boat and it wasn't fun.

Originally Posted by Eddy Johansen

Just want to put the record straight.

Eddy

[Jorgos]

Up, !!

I dont know about ths particular model , but Eddy has the know-how .
8 metres rib etec 250 , well priced,
4000 rpm 40 knots 1ltr/mile and you feel that your are doing 26 knots
3250 rpm 32 knots 0.9 lt/mile
There are not many ribs like that

[vassilis7ps]

Originally Posted by Bou

Can you tell a bit more about your experience with the hydrosport hull because a Dutch dealer is introducing the under the name 'Rough-Neck' ribs for a good price.

I have got one from roughneckmarine.nl it is great, its the best in that size, check my video from my first summer in Greek isliands

http://www.youtube.com/watch?v=wPsIhlcmTl8

[Leapy]

Originally Posted by Eddy Johansen

it can actually make 5km with only 1 litre of petrol at planing speeds. Bet you will not find any other 5,5m rib capable of that

Doesn't sound anything special to me for 50hp...our Ribcraft 5.3 with a Suzuki DF90 on the back has managed 3 km/litre over the entire years cruising of 500+ miles. This includes substantial runs at VMax, 60 mile round trips at 25knots+ and several hundred miles at planing speed.

Just thought I'd say...

[PeterM]

Defo one of these . These 2 both run 150 etecs without problem. Both Christchurch based - one belongs to a neighbour/mate.

[biffer]

i'll tell you where they came from, they were imported from portugal by bwm, they were put together down at mercury yacht harbor, one was sold to salty from the earing house where i think it's moored, i don't know who purchased the other one

[Jizm]

Originally Posted by biffer

i'll tell you where they came from, they were imported from portugal by bwm, they were put together down at mercury yacht harbor, one was sold to salty from the earing house where i think it's moored, i don't know who purchased the other one

indeed...

A suzuki powered one...

[biffer]

i did your stainless work

[Jizm]

Originally Posted by Blackroady

Defo one of these . These 2 both run 150 etecs without problem. Both Christchurch based - one belongs to a neighbour/mate.

one was built with a 150hp e-tec for a young lad somewhere in dorset, and had a mahoosive stereo system, he claimed it did 65mph, I never drove it myself...

[Jizm]

the 2008 demo boat at ribex...

[Jizm]

Originally Posted by biffer

i did your stainless work

I know and a fine job you did of it too,
I was the tall one!

[biffer]

uh ha!

[Eddy Johansen]

Originally Posted by Dirk Diggler

They only imported one, because it didn't perform as it should. I'm not aware of anyone working at Poole Boat Park with 15 years rib experience! They did however have a Evinrude main agent in the yard, who was given the impossible task of making it work.
Hmm, so what your saying is that George over engined the boat. So what would the max kw be on the CE plate of that particular boat? Was it not you that suggested moving the console etc?
Shame he didn't do the test when the bigger motor was on it! I went out in that boat and it wasn't fun.

Dirk, I have not clue who you are, but apparently I must have met you in 2003 in Poole.

Please read my posts properly. I never said George had someone in the yard with 15 years RIB experience. I said George lost a guy with RIB experience that had worked for him for more than 15 years. Can you see the difference here? I do not remember the blokes name, but he was a short, strong chap that had been working for George since he was 16 or something.

The max allowed power on the 555 was intially 52kw, but it was designed for 37kw and up to 34 knots. It was later modified for up to 67kw, but that was a couple of years later.

With the 75 'rude (I am still not sure that actually was a 75hp, the boat was faaaaar too fast for that amount of power) it reached 44 knots. That is more than 20% over the speed it was initially designed for. Try to understand that. If you put a 300bhp engine in a Volkswagen Golf, it will most likely not handle very well. Unless you also change the suspension, brakes etc. So when "everybody" wanted us to make the 555 for 90hp, we changed the hull accordingly. Reckon that was in 2005/2006. It made it slower with the 50hp, but it also made it safe to handle with a 4 stroke 90hp.

According to George Pittock, LC suggested to move weight forward and unfortunately George listened to him. Apparently he had said the CG should be forward of the front step - and that is sooooooo wrong for a 4,8m double stepped hull. So Poole Boat Park started to play around with the console and made a complete mess out of it.

When I came over with a representative of Det Norske Veritas certification bureau, we just tried to understand what they had been doing. We tested the boat and verified it started to chine-walk at aprox 41 knots. For an experienced driver that knows how to compesate for that, it was never a problem, but as a manufacturer we did not want to be liable for potential future problems and asked them kindly to reduce power.

In a world where "everybody" is screaming about the environment we have tried to give our contribution. More top speed with less engine. Problem is nobody wants to listen. People still want to show big muscles to impress the neighbours.

The 555 was made for up to 50hp. People started to put 75 and 90 on it.

The 636 was made for up to 115hp. Almost the only country a 90hp is used, is Portugal. Everywhere else 135, 140, 150 is used and I reckon there is even one in Spain with a 200HO on it.

The 808 was made for up to 225hp. There is one in Portugal with a Honda 150hp and it reaches 47mph. There is one in Holland that has touched the 80mph mark with a 250HO. But the fact is that most 808's in Holland are fitted with 300's. Why? I reckon a big engine compensates for a small.... yeah, you know.

And still they say the important is not the size of it, it's how you use it.

Have fun!
Eddy

PS. The new RIB 646 VFi is made for 140hp, and the new RIB 737 VFi is made for 175hp. Yeah, sure, but for how long? :-)

[Henkedok]

it's also whit a 200 hp

[Jizm]

Originally Posted by Henkedok

it's also whit a 200 hp

Bloody hell!

[Jorgos]

nice boat!

[Jizm]

Originally Posted by Jorgos

nice boat!

Yes it is, I like that.

How does it perform with that motor?

[Jorgos]

They say is 150 hp and goes up to 48+ knots.
I know that with the lighter suzuki 140 does 46 and with a power lift goes up to 48. Not many 6.5 metres can do that