Prudence and Speed - Page 2

Nos4r2 · 27 April 2006, 00:24

SR4, merc/mariner 50 4cylinder dinosaur.

I max out at 38mph on GPS with 50 litres of fuel but realistic cruising speed is about 25mph in anything over 3' seas.
It gets too hard not to get bounced out of the boat after 30mph after that.

Doesn't seem to be any end to the amount of lunacy I can do though and it just soaks it up-I rather enjoyed playing with the 9' standing waves in Old Harry race.

I think I need an SR5.4

ian parkes · 27 April 2006, 00:31

yes I have allready been looking at smaller ribs say 4.5 m 50 hp but those comments don't make sticking with the SIB too bad for now .

Iam not after big speed , economy and the ability to land on beaches etc is most important .
Main thing is comfort in a choppy sea , the SIB is hard work and I find myself constantly coming off the plane to avoid a very hard landing . How much better is a small rib for this .

Nos4r2 · 27 April 2006, 00:45

The V-hull makes it a bit softer I guess but the real bonus is not feeling like you're going to flip backwards if the wind gets under the hull.

The flooding hull on the Sr4 is a bonus when it gets too rough to plane but it's got to be really rather rough for that-I managed to plane across the chop over Shambles Bank off Weymouth at 15mph in f6 and with a tide running.
It feels really stable at displacement speeds-though this might only be psychological. It IS very stable at rest though- far better than the microplus 500 I had before.

Economy isn't TOO bad-I usually use 25-30 litres or so when I go out for the day.

ian parkes · 27 April 2006, 00:48

http://www.rib.net/forum/showthread.php?t=12909

I really like this one , but the confusion of choice and the way prices change for just a slightly bigger boat have made me decide to wait untill next year and get some experience in the sib and try to learn about what i really need .

Also and probably the main reason is Her indoors will throw a major wobbly if i anounce Iam changing the SIB allrready

Plus i have just got round to the idea that my 03 Aprilia 1000 is in need of replacement asap.

Boys and toys eh Cant take it with you

Nos4r2 · 27 April 2006, 00:55

5m is a substantially bigger boat in handling capabilities-a completely different world to a 4m.

ADS · 27 April 2006, 01:04

Quote:

Originally Posted by ian parkes

http://www.rib.net/forum/showthread.php?t=12909

I really like this one , but the confusion of choice and the way prices change for just a slightly bigger boat have made me decide to wait untill next year and get some experience in the sib and try to learn about what i really need .

Also and probably the main reason is Her indoors will throw a major wobbly if i anounce Iam changing the SIB allrready

Plus i have just got round to the idea that my 03 Aprilia 1000 is in need of replacement asap.

Boys and toys eh Cant take it with you

That Humber is a nice boat and seems a good deal, although likely to be a very different proposition to the SIB both in terms of capital outlay and running costs. If I was you (depending where abouts in Cornwall you are), would meet up with the rest of the Cornish Crowd, Roycruse seems to get out on Voyager a fair bit (lucky bugger) im sure he would take you for a spin so you could see how a bigger rib handles.

ian parkes · 27 April 2006, 01:08

Quote:

5m is a substantially bigger boat in handling capabilities-a completely different world to a 4m.

__________________

That what Iam trying to understand . I thinks there must be a reason that most of the ribs owned on this forum are bigger than 5m .

The massive jump in power that seems to be required for just half a metre or so longer is also something I don't understand at present .

It would be great to find the right boat first time for me and my pocket .

Nos4r2 · 27 April 2006, 01:24

If you mean the difference for example between your SIB hull and mine,it takes a lot more power to get a deep V to plane-but when planing they are more stable.

If you compare a 4m rib to a 5m you could put a 50 on a 5m and use it quite happily if you weren't fussed about speed or rough water. The drawbacks would be that with the extra weight and load carrying capacity coupled with the fact that the bigger the hull the bigger the drag-and the tendency of a larger hull to go through rather than over waves would make it far more fun and more capable with a bigger engine.

(breathes in)

Does that make sense? I'm not sure it does.

ian parkes · 27 April 2006, 01:33

Yes that does make sense to me .
I guess its a bit like learning about cars for the first time .
I went out to buy a car today It would be easy to know what engine size i wanted for size of car i was looking for . That is usually the bigest for me , but making the mistake of under powering is a bad one in a car and a I guess a boat .
I know that 50- 70 hp 4 stroke is as much as I want to pay the fuel for so finding the right hull is the learning bit here .

That Humber looks very good to me , a little more than I want to spend , but thats the story of my life .

I figure if the family have a great time in the sib this summer it will be easy to talk them into the bigger rib for next year

Nos4r2 · 27 April 2006, 01:39

errr...Why spend that much then? It's perfectly feasible to spend £4k-£5k on an older boat that'll do exactly the same job and you won't lose as much (if any) on depreciation.

The only real drawbacks are some dealers refuse to do anything other than service work on older motors and you've got to be pretty clued up before buying.

That Humber looks like a bloody good deal though.

pathalla · 27 April 2006, 03:45

Quote:

Originally Posted by codprawn

A lot depends on the conditions you go out in - if you want really high speeds you may as well stick to a hard boat. Something like a Fletcher or Ring 21 will do 70mph and is FAR cheaper than a new RIB.

RIBs are best in the rough - if 40kts feels slow on a flat calm day it certainly won't feel slow in a Force 7.....

I would normally try to go for the biggest engine option - you can always throttle back and save fuel.

Cod.... stick to a hard boat??? Why? I have a twenty six foot "hard boat" with twin mercruisers, v-8s. It goes along pretty good and its great to sleep on, have sex on and the air conditioner works well on a hot summer night. But if I want to go fast... and do it in a chop... I do not need a glass boat. The rib is a lot more fun and as quick as twin engined v-8's. As far as that goes it's a lot faster than my glass boat...no comparision. From you of all people... My hero... the CODMEISTER!!!

mdt · 27 April 2006, 07:40

Quote:

Originally Posted by Nos4r2

errr...Why spend that much then? It's perfectly feasible to spend £4k-£5k on an older boat that'll do exactly the same job and you won't lose as much (if any) on depreciation.

Quite agree there is not a direct correlation between the size of boat and the amount of fun you can have.
Indeed if nothing else you can afford to use a smaller RIB more often as it cost 25L a day not 50L. And seeing as how the current mob are doing all they can to get this to equate to £25 and £50. that is quite a saving.

Quote:

Originally Posted by Nos4r2

That Humber looks like a bloody good deal though.

looks even better in this link ???
http://www.boatsandoutboards.co.uk/view/F97859/

codprawn · 27 April 2006, 12:25

Quote:

Originally Posted by pathalla

Cod.... stick to a hard boat??? Why? I have a twenty six foot "hard boat" with twin mercruisers, v-8s. It goes along pretty good and its great to sleep on, have sex on and the air conditioner works well on a hot summer night. But if I want to go fast... and do it in a chop... I do not need a glass boat. The rib is a lot more fun and as quick as twin engined v-8's. As far as that goes it's a lot faster than my glass boat...no comparision. From you of all people... My hero... the CODMEISTER!!!

I don't mean a YANK hard boat!!! I meant a British speed boat - most of the RIBs around today have their hulls based on them!!!

What I was trying to say was RIBs really come into their own in the rough - in the sort of weather that sends most hard boaters scuttling back to the bar!!!

If you never go out in the rough you don't deserve a RIB!!!

ADS · 27 April 2006, 12:27

Quote:

Originally Posted by codprawn

most of the RIBs around today have their hulls based on them!!!

Some more than others

Alan · 27 April 2006, 13:01

Quote:

Originally Posted by codprawn

I don't mean a YANK hard boat!!! I meant a British speed boat - most of the RIBs around today have their hulls based on them!!!

What I was trying to say was RIBs really come into their own in the rough - in the sort of weather that sends most hard boaters scuttling back to the bar!!!

If you never go out in the rough you don't deserve a RIB!!!

I am curious Codders. How many times have you been out in a RIB in the rough? I mean you post with great authority and presumably from great experience?

As for the 'YANKS' not knowing how to build hardboats capable of the rough, presumably you've never heard of cigarette, fountain, Boston Whaler etc etc.

pathalla · 27 April 2006, 13:25

Quote:

Originally Posted by codprawn

I don't mean a YANK hard boat!!! I meant a British speed boat - most of the RIBs around today have their hulls based on them!!!

What I was trying to say was RIBs really come into their own in the rough - in the sort of weather that sends most hard boaters scuttling back to the bar!!!

If you never go out in the rough you don't deserve a RIB!!!

O.k.... you are forgiven, sounded like you were getting ready to convert.

DM · 27 April 2006, 16:04

Quote:

Originally Posted by codprawn

If you never go out in the rough you don't deserve a RIB!!!

Too right, Codders. Obviously you're a bit of an action man on the quiet.

Incidentally, I'm in your neck of the woods this weekend working for this oufit.......

http://www.paraquest.co.uk/

Turn up on Sunday and we'll give you a free jump.

I promise on my Mothers grave that I won't interfere with your parachute.

DM

Hugh Jardon · 27 April 2006, 16:48

Quote:

Originally Posted by davidmanning

Turn up on Sunday and we'll give you a free jump.

will you be helping to push dave?

codprawn · 27 April 2006, 17:15

Quote:

Originally Posted by davidmanning

Too right, Codders. Obviously you're a bit of an action man on the quiet.

Incidentally, I'm in your neck of the woods this weekend working for this oufit.......

http://www.paraquest.co.uk/

Turn up on Sunday and we'll give you a free jump.

I promise on my Mothers grave that I won't interfere with your parachute.

DM

mmm likely story.

I have a perfectly logical fear of heights - if I KNOW something is secure I am fine - for example a ladder up a tower crane is no probs - one bolted to a wall is no prob - one balanced against the side of a house bouncing around - no chance.

Dangling from a bit of fabric that someone else has packed - no thanks!!!

Nos4r2 · 27 April 2006, 18:56

Quote:

Originally Posted by mdt

looks even better in this link ???
http://www.boatsandoutboards.co.uk/view/F97859/

That's not the same boat. One's 2 stroke the other's 4.