Reply
 
Thread Tools Search this Thread
 
Old 14 August 2010, 17:55   #21
Member
 
Country: UK - England
Town: isles of scilly
Boat name: Still Miss behavin
Make: Ribcraft
Length: 6m +
Engine: 250 suzuki
Join Date: Dec 2003
Posts: 129
__________________

__________________
behavin is offline   Reply With Quote
Old 14 August 2010, 17:57   #22
Member
 
Country: UK - England
Town: isles of scilly
Boat name: Still Miss behavin
Make: Ribcraft
Length: 6m +
Engine: 250 suzuki
Join Date: Dec 2003
Posts: 129
[/IMG]
__________________

__________________
behavin is offline   Reply With Quote
Old 14 August 2010, 17:57   #23
Member
 
Bigmuz7's Avatar
 
Country: UK - Scotland
Town: Glasgow
Boat name: stramash
Make: Tornado
Length: 5m +
Engine: Etec 90
Join Date: Feb 2006
Posts: 5,068
Quote:
Originally Posted by behavin View Post
Yep thats what we want to see


Nice one
__________________
Bigmuz7 is offline   Reply With Quote
Old 14 August 2010, 18:01   #24
Member
 
Country: UK - England
Town: isles of scilly
Boat name: Still Miss behavin
Make: Ribcraft
Length: 6m +
Engine: 250 suzuki
Join Date: Dec 2003
Posts: 129
whoops sorry seem to have come out a bit big

The actual hull plate says 225hp but i'm told this was put together to demo the 250, then was used as safety boat as said before..

In the bow section is the anchor locker and contains one 10kg bruce and chain and a 5kg with 3m chain so there is quite a bit of weight up there already.

see what you reckon

pete
__________________
behavin is offline   Reply With Quote
Old 14 August 2010, 18:04   #25
Member
 
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,841
Quote:
Originally Posted by behavin View Post
whoops sorry seem to have come out a bit big
Don't worry. Gotchiguy's pics are so big they stretch halfway into Ebay.

BTW, she looks ok to me. The bits all look in the right places.
__________________
Mollers is offline   Reply With Quote
Old 14 August 2010, 18:34   #26
Member
 
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,013
It does not look too bad to me, are you sure you dont have a load of water in the hull? otherwise unless you startloosing weight on the transom your best bet will probably be to try some tabs...

I would look at going down the Lenco route and probably some 12"x12" Tabs will be the right size.
__________________
---------------------------------------------------
Chris Stevens

Born fiddler
Chris is offline   Reply With Quote
Old 14 August 2010, 19:04   #27
Member
 
Country: UK - Channel Islands
Town: Jersey
Boat name: Archangel
Make: Ribcraft
Length: 6m +
Engine: ETec 225
MMSI: 235063789
Join Date: Sep 2008
Posts: 1,005
I have virtually the same set up with my Ribcraft 6.8 except I have a 225 ETec and a heavier A-frame due to radar and a reflector cage. My boat also feels stern-heavy in rough conditions but rather than go to the hassle of adding trim tabs you could always try a different prop. I have recently changed to a 4-blader and now have more stern lift at speed as well as better acceleration and even a slight improvement in fuel economy. One of the problems with the 6.8 is that it's a wide boat for its length and so will always suffer in rough conditions compared to, say, the Ribcraft 7.8 which maintains the width of the 6.8 but has the extra metre so making it a proportionally narrower boat.
__________________
GJ0KYZ is offline   Reply With Quote
Old 14 August 2010, 19:25   #28
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
Quote:
Originally Posted by Chris View Post
It does not look too bad to me, are you sure you dont have a load of water in the hull? otherwise unless you startloosing weight on the transom your best bet will probably be to try some tabs...

I would look at going down the Lenco route and probably some 12"x12" Tabs will be the right size.
Looking for water ingress in the hull seems is a good Idea as this might well explain the weight at the stern.

Before you go to the expense of buying trim tabs and props, it might be well worth chucking a few heavy sand bags in to the bow area next time you venture out in to rougher conditions and see how you go. 20kg's of anchor and chain isn't very heavy for a RIB of that size. You really need in excess of 50kg's IMHO and 2 or 3 Wicks sand bags would do the job for a 5er. Don't get quick setting cement though
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 14 August 2010, 19:28   #29
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
Quote:
Originally Posted by behavin View Post
as you can imagine she is stern heavy and in rough seas will drop back into troughs lifting the bow and on occasions causing quite an uncomfortable ride.

ipete

Is this in following or head Sea's?
__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 15 August 2010, 05:08   #30
RIBnet supporter
 
gotchiguy's Avatar
 
Country: UK - England
Town: Dinard, Brittany
Boat name: Into the Red
Make: Osprey Vipermax
Length: 7m +
Engine: Evinrude E-tec 250HO
MMSI: 235 076 114
Join Date: Apr 2009
Posts: 1,948
RIBase
Quote:
Originally Posted by Mollers View Post
Don't worry. Gotchiguy's pics are so big they stretch halfway into Ebay.


But seriously, our boat has trim tabs and we find them a real help, most of the time we have them on with two stages down, (a tiny bit) and into a chop up to say 3ft they are fantastic at smoothing the ride, and keeping the nose in the water. When it get a little rougher though, it becomes a game of balancing this smoothness with how wet you're prepared to get. You get ALOT wetter when the tabs are down, and its just a case of balancing it out. Often we leave them turned off and let the hull do its work.

Another benefit is that you can get on the plane quicker: in a large harbour (of drying moorings) the speed limit is around 10knts, and in the flat calm conditions of a harbour it is possible to use the tabs to get on the plane at around 12 whereas it would usually be around16-18knts.

The final benefit is in a very large head sea, ie swell/waves over ~2m they enable you to hold the nose right down and stop any little jumps at all.
__________________
gotchiguy 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 11:35.


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