Reply
 
Thread Tools Search this Thread
 
Old 11 December 2009, 12:11   #31
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
Quote:
Originally Posted by Knot Yet View Post
Can some explain in English what is meant by " a constant v hull makes it a pig in the rough head sea"

Apologies for bringing this back to boring boat stuff
It's just an old design of Hull that all RIBs of that time had. It worked on some makes of RIB much better than others. This has been succeeded by the modern Cad designed hulls that are supposed to be much more efficient though the water. Someone with more Tech on the subject of hulls can give you a more detailed description however.
__________________

__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 11 December 2009, 12:14   #32
Member
 
Knot Yet's Avatar
 
Country: UK - England
Town: Horsham
Boat name: Knot a RIB
Make: Avon Typhoon
Length: 4m +
Engine: Yamaha 25hp
Join Date: Sep 2009
Posts: 868
Thanks Andy - but why does that make it a pig - is it hard to steer, very wet, unstable - just wondered what the impact was for the RIB user
__________________

__________________
Sometimes my mind not only wanders ..... it leaves completely

Member of the ebay Blue RIB cover club.
Knot Yet is offline   Reply With Quote
Old 11 December 2009, 12:17   #33
Member
 
chewy's Avatar
 
Country: UK - England
Town: Up Norf
Make: Avon SR4,Tremlett 23
Length: 4m +
Engine: Yam 55, Volvo 200
Join Date: Apr 2007
Posts: 5,217
Quote:
Originally Posted by Top banana View Post
how about starting things off by posting a picture of your boat as your avatar. so we have got something to compare.
Loads of photos of my boat on here.
__________________
chewy is offline   Reply With Quote
Old 11 December 2009, 12:46   #34
Member
 
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,556
Modified V shape (warped Plane) HUll = variable dearise combines sharp v at front (bow) ensd of boat to punch through water and a shallower V at the stern to facilitate planing and give a bit of comfort. Fast-planing powerboat hulls often combine a deep V at the bow and a shallower v at the back end (stern)


.A deep-V or constant-dead-rise powerboat carries the steep deadrise of its entry from the hull to the transom. A constant deadrise hull needs more whoomph to plane and is not as fast in calm water as a modified V, . It's not all bad news as it can keep flying through seas that require variable deadrise to slow down. They are faster and hold their course at speed better but turning can be a little more tricky (the fat arse of a modifies V gives a more stabilised turn). Deep-V powerboats are tippy at slow speeds but acquire stability when planing. They hold course extremely well but may turn with difficulty, and they have a tendency towards l chine-walking.

My comments about the dash being a pig in the rough, were not to do with srability it was to do with the high bow and where the water goes. which is directly in your face, rhis can be very debiltating after a while.

Maybe Dirk or Adam can explain this a little better, but the answer is you boat will be a lot more dependable in the rough than say an Avon Adventurer which has a variable deadrise..

I only know this stuff from converstions I've had with Johnny Fuller and Neil Holmes So If ADAM Y, Delta Rich, Dirk Digler or even Willbrooksy can add any other info it will probably be more erudite.

I had a quick snigger at Hightowers CAD design comment. wasn't the last rib manufacturer on here claiming CAD design a splasher?
__________________
Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
Rogue Wave is offline   Reply With Quote
Old 11 December 2009, 12:56   #35
Member
 
Knot Yet's Avatar
 
Country: UK - England
Town: Horsham
Boat name: Knot a RIB
Make: Avon Typhoon
Length: 4m +
Engine: Yamaha 25hp
Join Date: Sep 2009
Posts: 868
Thanks RW - that makes more sense ................ I think
__________________
Sometimes my mind not only wanders ..... it leaves completely

Member of the ebay Blue RIB cover club.
Knot Yet is offline   Reply With Quote
Old 11 December 2009, 13:17   #36
Member
 
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,556
it's just a log winded and badly spelled way of telling you you could not have bought a better boat,
__________________
Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
Rogue Wave is offline   Reply With Quote
Old 11 December 2009, 13:18   #37
RIBnet supporter
 
Jizm's Avatar
 
Country: UK - England
Town: Southampton
Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
Join Date: Jun 2002
Posts: 3,803
Quote:
Originally Posted by Rogue Wave View Post

I had a quick snigger at Hightowers CAD design comment. wasn't the last rib manufacturer on here claiming CAD design a splasher?
NOOOOOOOOOOOOOOOOOO!
Please Stu, not again
Jizm is offline   Reply With Quote
Old 11 December 2009, 13:36   #38
Member
 
Knot Yet's Avatar
 
Country: UK - England
Town: Horsham
Boat name: Knot a RIB
Make: Avon Typhoon
Length: 4m +
Engine: Yamaha 25hp
Join Date: Sep 2009
Posts: 868
Quote:
Originally Posted by Rogue Wave View Post
it's just a log winded and badly spelled way of telling you you could not have bought a better boat,
Phew - lol

What's the story with the CAD comment ..... no only joking - looks like Jizm is self combusting
__________________
Sometimes my mind not only wanders ..... it leaves completely

Member of the ebay Blue RIB cover club.
Knot Yet is offline   Reply With Quote
Old 11 December 2009, 13:39   #39
Member
 
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,556
All right I'm sorry. for sticking to my beliefs lets get back to the Delta Jacuzzi
__________________
Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
Rogue Wave is offline   Reply With Quote
Old 11 December 2009, 16:58   #40
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
Quote:
Originally Posted by Rogue Wave View Post
I had a quick snigger at Hightowers CAD design comment. wasn't the last rib manufacturer on here claiming CAD design a splasher?
__________________

__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower 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 10:05.


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