Reply
 
Thread Tools Search this Thread
 
Old 13 October 2005, 04:11   #1
RIBnet supporter
 
LURCHER's Avatar
 
Country: UK - England
Town: Tisted Hampshire
Boat name: Hot Lemon
Make: Scorpion
Length: 8m +
Engine: Inboard
MMSI: 235
Join Date: May 2002
Posts: 766
Send a message via MSN to LURCHER
Opti owners

I have noticed that when trimming up or down at low revs I get a slight dip in revs when the trim motor is running , I assume this is due to power being drawn away from the injectors to the trim motor . Am I alone or do all Optimax engines do this or am I about to suffer some ghastly failure ?
150 Optimax
__________________
www.hiremarquee.co.uk
LURCHER is offline   Reply With Quote
Old 13 October 2005, 04:54   #2
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 LURCHER
I have noticed that when trimming up or down at low revs I get a slight dip in revs when the trim motor is running , I assume this is due to power being drawn away from the injectors to the trim motor . Am I alone or do all Optimax engines do this or am I about to suffer some ghastly failure ?
150 Optimax
It's no different than whacking the car headlights on main beam on tick over. The alternator is loaded and the revs dip.
__________________

__________________
Mollers is offline   Reply With Quote
Old 13 October 2005, 11:22   #3
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
I would not think that it's anything to worry about. Just make sure the main 12v connections at both the battery and the engine are good, clean and well greased.
Jizm is offline   Reply With Quote
Old 13 October 2005, 13:24   #4
Member
 
Country: UK - England
Town: Cowes
Length: 8m +
Engine: 225 Opti
Join Date: Jul 2005
Posts: 551
I have had same when trimming out enging - makes sense that it is a dip in power. But just think of the extra forward thrust the hydraulics are giving while operating
__________________
Rodan is offline   Reply With Quote
Old 13 October 2005, 14:08   #5
RIBnet supporter
 
LURCHER's Avatar
 
Country: UK - England
Town: Tisted Hampshire
Boat name: Hot Lemon
Make: Scorpion
Length: 8m +
Engine: Inboard
MMSI: 235
Join Date: May 2002
Posts: 766
Send a message via MSN to LURCHER
Opti

Thanks I can relax now 'till I hear the next odd noise !
__________________
www.hiremarquee.co.uk
LURCHER is offline   Reply With Quote
Old 13 October 2005, 14:57   #6
Member
 
Country: UK - Wales
Town: Llandygai, Bangor
Boat name: AhandAh (R&R)
Make: Maxum
Length: 7m +
Engine: INBOARD DIESEL
Join Date: Nov 2004
Posts: 141
Send a message via AIM to Ribster Rache
oh yes got that one too ,no problem, its just due to the low revs and low power output, as they said head lights on the car,find something else to worry about!
__________________
Ribster Rache is offline   Reply With Quote
Old 13 October 2005, 15:10   #7
Member
 
Country: Other
Length: no boat
Join Date: Aug 2005
Posts: 623
Quote:
Originally Posted by LURCHER
I have noticed that when trimming up or down at low revs I get a slight dip in revs when the trim motor is running , I assume this is due to power being drawn away from the injectors to the trim motor . Am I alone or do all Optimax engines do this or am I about to suffer some ghastly failure ?
150 Optimax
Hmmm, can't say I've noticed that, although I also can't say I trim it at low revs! Got a charter tomorrow, so I'll give it a go.
__________________
hard1 is offline   Reply With Quote
Old 14 October 2005, 03:32   #8
Member
 
Country: UK - England
Town: Cowes
Length: 8m +
Engine: 225 Opti
Join Date: Jul 2005
Posts: 551
Mine does it (ever so slightly) at mid range revs - no more than a very slight change in tone
__________________

__________________
Rodan 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 12:23.


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