Reply
 
Thread Tools Search this Thread
 
Old 16 February 2008, 04:30   #1
Member
 
Country: UK - England
Town: Fareham
Boat name: Wave Glider
Make: Cobra 7.55
Length: 7m +
Engine: Suzuki 250
Join Date: Sep 2004
Posts: 118
Cobra 7.5? - What Engine and What Rib!!

Hi, My father has decided to join the RIB world! He has replacement hips and so the seating on a RIB is really important as the jockey style seats spread his hips which is uncomfatble. Therefore the natural selection (i think) is the cobra 7.5 unless there are any other suggestions here. The next thing is the Engine, there seem to be lots of Optimax 200 or 225's around but I cant help thinking that my father would prefer the smoothness of the 4 Stroke.

What are your thoughts, A. are we looking at the right RIB and B. What are the thoughts of Optimax Vs. 4 Stroke and is there any massive difference in fuel consumption between the two.

Thanks so much in advance for your help.....
Andrew
__________________

__________________
adams1x is offline   Reply With Quote
Old 16 February 2008, 05:26   #2
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
I think a V6 optimax will be quite smooth, compared to some thirsty old 4 cylinder 4 stroke thats inherently unbalanced.

Yes I think you are looking at the right size which will be much more comfortable than say 5.5m but the only way to check the seats out would be a sea tial. There are quite a few large ribs in that range for sale so worth having a good look around the market. You might find a Scorpion or revenger with different seats too.

There is going to be little in the fuel figures btw. Honda etal might claim 30% better compared to old 2 stroke carb engines but if thats 30% of 2 lph at tickover it's not worth getting excited over.

Pete
__________________

__________________
.
Ribnet is best viewed on a computer of some sort
Pete7 is offline   Reply With Quote
Old 16 February 2008, 13:11   #3
Member
 
Cypman's Avatar
 
Country: UK - Isle of Man
Town: Douglas
Length: no boat
Join Date: Aug 2006
Posts: 337
Hi Andy
Your thread poses lots of questions, what is not clear is whether you are planning to buy new or used. In the first instance I would recommend you go to the RIB International Magazine site and under their "Online Articles" proceed to "RIB Design" and read the very comprehensive article on "RIB Seating". This will give your Dad a very good idea on what is available with regard to seats.
I see you are a RIB owner already but I am not clear about your level of experience. If I am "preaching to the converted" with my ideas I apologise sincerely . I agree that 7.5m is a good length to select, it is not too difficult to tow, launch and recover, moreover, it remains within a "reasonable" price bracket. Obvously, if money is not an issue and the boat is to be dry stacked or similar, the longer the boat usually means a better ride, as does the deadrise of the hull. A deeper "V" hull will normally provide a softer ride.
Regarding your choice of boat there are many good models, and a few bad ones!!, on the market. I suggest you spend some time searching through this site to get ideas. You might also like to look at the Boats For Sale sites in order to get a better feel for what is currently available. To name a few of my favourites, RIB net, RIB International, Boats and Outboards For Sale, Apollo Duck Etc,etc.
Concerning engine choice, whilst I personally prefer 4 strokes, any of the new generation 2 or 4 strokes do a fantastic job and are not hugely different on overall fuel burn under normal operations.
Finally, there are lots of very experienced and knowledgeable Ribsters on this site who are only too willing to respond to any more questions you might have.
Good luck in your search, I am sure you will find a comfortable boat for your dad and don't forget a sea trial in choppy conditions is essential to validate the comfort factor!!
__________________
Cypman is offline   Reply With Quote
Old 16 February 2008, 15:31   #4
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Cobras are great boats - not as hard core as some - more of a family boat.

I personally love 2 strokes - the fuel injected ones aren't really any heavier on fuel than the 4 strokes. 2 strokes are noiser - especially at idle but on the move there isn't much difference - the wind and the waves make more noise.

To be honest it comes down to price - I would go with whatever you get the best deal on.
__________________
codprawn is offline   Reply With Quote
Old 16 February 2008, 15:54   #5
Member
 
Country: UK - England
Town: Fareham
Boat name: Wave Glider
Make: Cobra 7.55
Length: 7m +
Engine: Suzuki 250
Join Date: Sep 2004
Posts: 118
Thanks for the comments, the budget is about 20-25k, and it is going to be kept in a marina but dry berthed so lifted in and out of the water depending on when it is needed. Both my father and I are pretty expereinced him with bigger boats and me with ribs for a few years now but i tend to know the boat i own well and not much else that is going on in the industry

I am interested to hear the fuel consumption is not a great deal more on the modern 2 strokes which would potentially make the Cobra 7.5's with 200 or 225 Optimax's which are 2003/4 boats seem to be around the 20k mark seem a lot of boat for your money....
__________________
adams1x is offline   Reply With Quote
Old 16 February 2008, 18:59   #6
Member
 
Country: UK - England
Boat name: SOLD
Length: under 3m
Join Date: Jun 2004
Posts: 794
Have a search though the treads I owned a 7.5 with a 225 F/Stroke Yamaha for three seasons
The engine was the only good bit of the package
If you are not going out of sight of land in no more than slight conditions
then ok.
Very hard ride in the chop, the upright standing was down right bad and if you converted them into seats the driving position was even worse.
They look great very smart, but the build quality was crap.
I took mine back to the factory in wales three times, i suppose in the end some one got a rib that was at least sorted.
My opinion is that you would be buying a flash rib not a good rib, thats my opinion from some one that as owned one.
__________________
Roy Smith is offline   Reply With Quote
Old 16 February 2008, 19:56   #7
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
I think that's rather harsh considering

A. The price compared to a Scorpion - like about 1/2.

B. The fact that many DO go out in some pretty nasty conditions. There is a commercial one that operates out of Swansea that runs trips all the time - prob works far harder than most!!!

C. There have been people on here who were quite happy with them.
__________________
codprawn is offline   Reply With Quote
Old 17 February 2008, 06:38   #8
Member
 
Country: UK - England
Boat name: SOLD
Length: under 3m
Join Date: Jun 2004
Posts: 794
I have owned one so i speak from what i know not from what i have been told
And don't bring the scorpion into it, i could name 6 ribs that are in the same price band. Humber, ribcraft etc etc that are in a different league for long term owner ship.
__________________
Roy Smith is offline   Reply With Quote
Old 17 February 2008, 09:03   #9
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Quote:
Originally Posted by Roy Smith View Post
I have owned one so i speak from what i know not from what i have been told
And don't bring the scorpion into it, i could name 6 ribs that are in the same price band. Humber, ribcraft etc etc that are in a different league for long term owner ship.
It is NOT just what I have been told - I know the bloke who runs the commercial RIB out of Swansea and have been out on it several times - often in quite choppy conditions.

I have also been out on a few 8.5m Cobras but never a 7.5.

Picton boats have been trading for over 30 years - if they were making products that bad I would have though they would have gone bust a long time ago. Many of their speedboats from the 70s are still going strong!!!

If you do a search on Ribnet you will find people who are quite happy with their Cobras.

http://rib.net/forum/showthread.php?t=20624

Just because you were disappointed it doesn't mean everyone would be. After all I remember a commercial user on this site having problems with his Scorpion and switching to Revenger - it doesn't mean that Scorpions are bad boats!!!
__________________
codprawn is offline   Reply With Quote
Old 17 February 2008, 13:12   #10
Member
 
Country: UK - England
Boat name: SOLD
Length: under 3m
Join Date: Jun 2004
Posts: 794
All boats and ribs have they off days
I remember the tread about the scorpion,
I also remember the tube coming adrift on a revenger that HMS was bring back from the channel Islands, but you never bring that up.
You have never owned a 7.5 Cobra so your comments are irrelevant.
I ask you the question
Would you be happy to take your New Rib on a return to base warranty
Back to the Factory three time each trip being a four hundred mile round trip journey, in the end i was so fed up i had even more work done at my own expense.
I am not turning this into something personal, but i tend not to give advise or opinions unless i can verify what i am talking about.
__________________

__________________
Roy Smith is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 09:34.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.