Reply
 
Thread Tools Search this Thread
 
Old 26 July 2004, 12:34   #11
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
Quote:
Originally Posted by carly baby
trust you to beat me to it,i
Carl

That's about the only thing he will beat you to in Distant Mumble

I had this problem in the Scorpion, as slowing down wasn't an option I offset the engine a bit more and it helped. In a chat to Johnny Fuller about this he suggested I tried one manual trim tab on the oppsite side to the torque steer
__________________

__________________
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 26 July 2004, 13:13   #12
Member
 
Country: UK - England
Town: Ipswich
Boat name: Obsession
Make: ORKNEY PILOTHOUSE 20
Length: 6m +
Engine: SUZUKI 70
MMSI: 235024496
Join Date: May 2004
Posts: 390
Faro

Had a Faro myself with a 115 Mercury 2 Stroke,don't know if the engine was offset as it was allready fitted when I got it,I should take the fins off you shoudn't need them didn't have them on mine and she handled fine.
__________________

__________________
Wayne Rogers is offline   Reply With Quote
Old 26 July 2004, 15:18   #13
Member
 
Country: UK - England
Town: Farnborough
Boat name: Eleven
Make: Arrow
Length: 8m +
Engine: 557cu, 700hp
Join Date: Jul 2003
Posts: 1,255
Start with the easy stuff first.
__________________
Matt is offline   Reply With Quote
Old 26 July 2004, 16:07   #14
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
Quote:
Originally Posted by MadMat
Start with the easy stuff first.
I agree with Mat, take those wings off the engine, have the prop fixed and try different trim positions first.

Pete
__________________
Pete7 is offline   Reply With Quote
Old 26 July 2004, 16:13   #15
tue
Member
 
Country: UK - England
Town: Paignton, Devon
Make: Chinook and Viking
Length: 7m +
Engine: 150 Etec + 125 Merc
Join Date: Jul 2003
Posts: 526
Also check the trim tab (the small fin above the prop or the thingy that compensates for the rotation of the propeller ) is offset the correct way. When looking from the back all the way left for a left hand rotation engine.
__________________
**Paul**
Brixham BSAC
tue is offline   Reply With Quote
Old 26 July 2004, 17:55   #16
Member
 
Country: UK - England
Town: Farnborough
Boat name: Eleven
Make: Arrow
Length: 8m +
Engine: 557cu, 700hp
Join Date: Jul 2003
Posts: 1,255
Whilst I do hate the wings, one assumes they were on a for a reason, mostly likely to make it plane easier or stop porpoising at some particular speed.
__________________
Matt is offline   Reply With Quote
Old 26 July 2004, 18:05   #17
Member
 
Country: UK - England
Town: Farnborough
Boat name: Eleven
Make: Arrow
Length: 8m +
Engine: 557cu, 700hp
Join Date: Jul 2003
Posts: 1,255
This is a classic scenario of too much trim 'in'. Only when that has been discounted is it worth looking elsewhere. The trim tab will not change the tendency to roll, only the steering torque will change. The prop, whilst more likely to cavitate, may lose some speed, and vibrate a bit more, again, won't cause it. (The most efficient prop theoretically only has 1 blade )

So I'm not saying it can only be lack of engine trim, just that IMHO it's most likely to be..

I bet the boat feels like it's trying to crab sideways too.
__________________
Matt is offline   Reply With Quote
Old 27 July 2004, 05:04   #18
Member
 
Country: UK - England
Town: Southampton
Boat name: SMH Rib / War Shot
Make: Ribtec / Scorpion
Length: 4m +
Engine: 10hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,894
RIBase
Russ,

I would agree with the others - do the easy stuff first - put the engine back to how it should be.

ie.

1. Straighten the skeg - big adjustable spanner clamped in place
2. Remove the fins - I don't rate them if you have enough power
3. Refurbish the propeller - if its aluminium it should only cost about £30 - £50 and Steel Developments can turn them around in 3 days.
4. Play with the trim - trimming out should reduce your lean to the left.

Don't underestimate the effect a crappy propeller can make.

Regards

Duncan
__________________

__________________
Searider 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 17:09.


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