Reply
 
Thread Tools Search this Thread
 
Old 09 May 2016, 03:01   #1
Member
 
Country: UK - England
Length: 4m +
Join Date: Oct 2006
Posts: 79
Design Fault?

I have just finished fitting out a new RIB and would appreciate some advice on the fuel system as I think I must be missing something. There is a built in (under deck) stainless tank with connections for the filler, breather and fuel supply hose at the aft end near the transom moulding and filler cap / breather outlet above the splash well. The issue to me is that the breather outlet is lower than the filler cap so if you fill the tank until the garage fuel pump stops then fuel will exit the breather!? Also when fuel if you park the trailer on any sort of incline again fuel gushes out of the breather?

What am I misunderstanding?

Any help would be grateful received.
__________________

__________________
Texel Tom is offline   Reply With Quote
Old 09 May 2016, 03:37   #2
Member
 
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,194
you sure the breather is not the fuel supply and vice versa?
__________________

__________________
Member of S.A.B.S. West Country Division
matt h is offline   Reply With Quote
Old 09 May 2016, 05:00   #3
RIBnet supporter
 
Brian's Avatar
 
Country: UK - Isle of Man
Town: Peel, IOM
Length: no boat
Join Date: Nov 2000
Posts: 2,277
RIBase
Or is the breather outlet meant to connect to a hose which should then rise above to the outside world?
__________________
Brian

"Ribbing-the most expensive way of travelling third class"
Brian is offline   Reply With Quote
Old 09 May 2016, 05:34   #4
Member
 
Country: UK - England
Town: Hull, East Yorkshire
Boat name: Hull Uni One
Make: Humber
Length: 6m +
Engine: OB, Petrol, 140HP
Join Date: Mar 2007
Posts: 121
Quote:
Originally Posted by Brian View Post
Or is the breather outlet meant to connect to a hose which should then rise above to the outside world?
I would suggest this too! Should be vented outside any enclosed space to prevent buildup of fuel vapour.
__________________
Dry_Doc is offline   Reply With Quote
Old 09 May 2016, 05:46   #5
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: 12,645
RIBase
Quote:
Originally Posted by Dry_Doc View Post
I would suggest this too! Should be vented outside any enclosed space to prevent buildup of fuel vapour.
Yep.

I have something called a 'Barton fuel whistle' fitted into my breather line as well.It lets you know when the tank is full.You fit it in the breather line immediately above the fuel tank and it stops whistling when fuel gets to it.

Fuel pump cutoff will be very likely to make a mess, even with a breather higher than the filler cap.
__________________
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 09 May 2016, 06:19   #6
Member
 
Country: UK - England
Town: London
Boat name: Galene
Make: Ribeye S650
Length: 6m +
Engine: Yamaha 150hp
Join Date: Aug 2013
Posts: 30
Quote:
Originally Posted by Nos4r2 View Post
Yep.

I have something called a 'Barton fuel whistle' fitted into my breather line as well.It lets you know when the tank is full.You fit it in the breather line immediately above the fuel tank and it stops whistling when fuel gets to it.

Fuel pump cutoff will be very likely to make a mess, even with a breather higher than the filler cap.
Was looking those up and the picture they have on the website has the breather below the fuel port. I guess it's not such a rare thing on motor vessels in general.

Barton Marine - Products - Fuel whistle
__________________
sorabain is offline   Reply With Quote
Old 09 May 2016, 06:58   #7
Member
 
Country: UK - England
Length: 4m +
Join Date: Oct 2006
Posts: 79
Fantastic! Thanks for all the help and especially the suggestion of the fuel whistle. That should do exactly what I need :-) Here is a pic of the filler port and the tank vent on the far side of the splaswell...

[/URL][/IMG]
__________________
Texel Tom is offline   Reply With Quote
Old 09 May 2016, 09:03   #8
Member
 
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,194
you would have expected a pipe to be on it and to be dash mounted on the side somewhere surely??
__________________
Member of S.A.B.S. West Country Division
matt h is offline   Reply With Quote
Old 09 May 2016, 10:12   #9
Member
 
Country: UK - England
Length: 4m +
Join Date: Oct 2006
Posts: 79
Well that's my next question really. Having solved to overfilling issue
with the whistle device there is then the fact that all three connections to the tank are at the aft end in a line. This includes the breather tube which surely means when filling the tank with the bow raised there will be air in the forward part of the tank which can't be displaced?
__________________
Texel Tom is offline   Reply With Quote
Old 09 May 2016, 13:18   #10
Member
 
Country: UK - England
Town: Royal Wootton Bassett
Length: 8m +
Engine: 250
Join Date: Jul 2008
Posts: 8,020
Quote:
Originally Posted by Texel Tom View Post
Well that's my next question really. Having solved to overfilling issue
with the whistle device there is then the fact that all three connections to the tank are at the aft end in a line. This includes the breather tube which surely means when filling the tank with the bow raised there will be air in the forward part of the tank which can't be displaced?
You should have the breather at the front with the breather tube exiting the console at high level as Matt says
__________________

__________________
whisper 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 13:55.


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