Thread Tools Search this Thread
Old 22 July 2011, 15:15   #11
Country: USA
Town: Seattle
Boat name: Water Dog
Make: Polaris
Length: 4m +
Engine: Yamaha 60hp
Join Date: Apr 2007
Posts: 1,152
Originally Posted by charlie65 View Post
not sure what it says ill check it tomorrow, as for trim tabs there is none , surely the outboard engine trims ??
Above the propellor is a zinc shaped like an upside down shark fin. On your size engine it should be about 10cm long. That is the trim tab on an outboard. Is it dramatically worn or missing altogether?

While a simple part, if it is misadjusted, worn/eroded, or missing it can cause all sorts of pulling problems.

captnjack is offline   Reply With Quote
Old 22 July 2011, 15:38   #12
RIBnet admin team
Nos4r2's Avatar
Country: UK - England
Town: The wilds of Wiltshire
Boat name: WhiteNoise/Dominator
Make: Ballistic 7.8/SR5.4
Length: 7m +
Engine: Opti 225/Yam 85
MMSI: 235090687/235055163
Join Date: Jul 2005
Posts: 12,551
Originally Posted by charlie65 View Post
maybe im wrong it was advertised as a humber predator , ok then maybe just treat it as a 5.5 metre humber ??
Post a pic. Someone will know what it is.
Need spares,consoles,consumables,hire,training or even a new boat?

Please click HERE and HERE and support our Trade Members.

Join up as a Trade member or Supporter HERE
Nos4r2 is offline   Reply With Quote
Old 22 July 2011, 15:49   #13
Country: UK - England
Town: NW& wherever the boat is!
Boat name: depends on m'mood!
Make: Humbers/15-24m cats
Length: 6m +
Engine: etec130/big volvos
MMSI: many and various
Join Date: Nov 2001
Posts: 1,815
That is the trim tab
thats not doing it. it is the up/down power trim ya need to play (carefully) with.
Trim the leg down (in as far as it will go towards the transom) when setting off and as soon as its on the plane trim up (moving leg out from transom) by stages until the steering lightens up and the boat rides flat without pulling to one side.

lets have the pic to see what model it is. Need to see bow and stern profiles. Various Humber models as earlier post. All have different characteristics.
Dave M
wavelength is offline   Reply With Quote
Old 22 July 2011, 16:53   #14
RIBnet supporter
Pikey Dave's Avatar
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 6m +
Engine: 2 x 115 Etecs/DF140a
MMSI: 235060745/235111389
Join Date: Feb 2008
Posts: 6,409
Originally Posted by charlie65 View Post
advice needed

I have a Humber Predator 5.5m rib with a mercury 150 outboard , i have only purchased this , it was used as a dive boat, i have bought it to use for fun in and around belfast/bangor/northdown.Up to now i have not taken it much over 1/4 throttle as it feels out of control and dangerous, i have alot of inland water boating experience but no sea experience , ,i have been told the engine may be too powerful for the rib ? could this be true?, today there where 3 persons on board and it was anything but fun , the seas where not that choppy
the boat seems to pull to the right alot

any advice would be much appreciated
In a previous existence I had a 5.85 with a 175 on the back, a handful but not flighty or unstable. I'd rather see it with a 150 than a 115. What prop is on it?
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4: See rule#5
Pikey Dave is offline   Reply With Quote
Old 23 July 2011, 07:50   #15
Country: UK - N Ireland
Town: belfast
Boat name: no name yet
Make: humber predator
Length: 5m +
Engine: 150 mercuryoutboard
Join Date: Jul 2011
Posts: 6
humber rib

thank you all for your advice , i am on me way now to take pics so i will post them later tonight

thanks again everyone it is much appreciated
charlie65 is offline   Reply With Quote
Old 25 July 2011, 04:12   #16
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,538
Just as a thought, if it was a dive rib, is it maybe set up to be perfectly balanced with umpteen heavy cylinders in a rack somewhere?

I've "only" got a 60 and there is a perceptible difference in handling between the forward tank being full & empty. Granted the whole caboodle only clocks in at about 430Kg when full of fuel......

9D280 is offline   Reply With Quote

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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 02:07.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.