Reply
 
Thread Tools Search this Thread
 
Old 19 June 2008, 08:28   #31
Member
 
Country: UK - England
Town: Nutbourne
Boat name: Renegade
Make: Porter
Length: 6m +
Engine: 140 Tohatsu
MMSI: 235022904
Join Date: Dec 2003
Posts: 1,195
Bruce
Your trunk is more or less how things were before it all went rotten. There is a photo of the old arangement further back.
I am trying to find a way of smoothing out the throttle and gear cable routes because of the significant and sharp bends at the transom. Its amazing how much smoother the throttle was after it had been freed from its old constraints.
The thing I like about the open trunking is that it will fill with water for part of its length, it may even flood the console if things get very bad, but it does not onvolve a hole straight into the bilge. Empty the sump, and the whole thing is self draining. There is are no "U" bends or traps to hold water/sand/ham sandwiches/sweet wrappers etc.
I used to get water in the bilge, some which which was from wet anchor warps and some was through old leaking hatch seals, but most was from a really poor fuel pipe exit and poor/non-existant support at the deck/transom joint.
__________________

__________________
Mark H
"A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools" Douglas Adams
Mark Halliday is offline   Reply With Quote
Old 19 June 2008, 11:39   #32
Member
 
Country: UK - Scotland
Town: Inverness
Boat name: none
Make: none
Length: 5m +
Engine: none
MMSI: none
Join Date: Mar 2007
Posts: 1,908
I am beginning to think we are all talking slightly at cross purposes now?
To recap. My last RIB had above deck looming and on a very small boat used for diving it was a pain. control cables to route around everything and go along under the tubes meant quite a few bends and it was a pain taking up a fair amount of what was limited deck space exiting the console.
New boat has 4" trunk with raised spigot forward of the well, no access from trunk into hull as it is sealed off with only opening to above deck level. Water cannot get into the hull via the trunk. because of positioning runs for cables are brilliant and could not be better unless run down middle of deck on surface. The only issue is possibly in certain circumstances the console could have some water entering via any leaks into the trunk from the rear "hat" but I have fitted a "hat" to the exit point in the console to limit this and this part of the console is only wet storage, all dry stuff is on a shelf mid way up the console via another witches hat.
Nothing is perfect but I am happy with it.
mark, I reckon your control routing problems were mostly caused by the exit point too close to the transom requiring a double reverse bend to get into the outboard?
__________________

__________________
BruceB is offline   Reply With Quote
Old 19 June 2008, 17:58   #33
Member
 
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,962
Quote:
Originally Posted by BruceB View Post
On a small boat I did find the above deck cables such a pain that I wanted rid of them even having done them in the way JW suggests. ....The picture shows how much room it took up on what was a very small boat for diving.
Not guilty. That's nothing like what I was suggesting and I can understand why you wouldn't want that arrangement.
Quote:
Humbers always have a little water in the hull in my experience after use, every one I have every used or owned always had a small amount inside from various sources.
I must have been lucky with mine. My Destroyer was so well sealed it popped when the bung was removed.
__________________
JW.
jwalker is offline   Reply With Quote
Old 19 June 2008, 18:35   #34
Member
 
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
Quote:
Originally Posted by Mark Halliday View Post
A solution pehaps?

I was looking at a mates Ribtec 655 yesterday, and I may have an answer.

He has a bit of rectangular trunking (extractor duct) on the underside of the deck from the front face of the well to under the console. It is sealed at both ends, so the inside of the duct is "outside" and it never opens into the bilge. As the deck is lower at the stern than the console, the water level in the well/on deck is always lower than the floor in the console. A pump in the well keeps the outboard end dry mosy of the time. The only time that I can see it being lower is if you are going down a big wave with a dead pump.

Any 655 owners out there got any comments?
Mark: How will this solve your fuel hose problem?
__________________
Downhilldai is offline   Reply With Quote
Old 20 June 2008, 03:30   #35
Member
 
Country: UK - England
Town: Nutbourne
Boat name: Renegade
Make: Porter
Length: 6m +
Engine: 140 Tohatsu
MMSI: 235022904
Join Date: Dec 2003
Posts: 1,195
Quote:
Originally Posted by BruceB View Post
I reckon your control routing problems were mostly caused by the exit point too close to the transom requiring a double reverse bend to get into the outboard?
Spot-on. It is just the engine controls that I want to straighten out. All the other cables and pipes are easy to route.

Quote:
Originally Posted by Downhilldai View Post
Mark: How will this solve your fuel hose problem?
It won't. I am still going to run the fuel hose out through the front wall of the well, but this time it will go through a round Index Marine cable gland, which should be a bit more effective than a large hole and some silicone.

Re. Over deck routing. It probably is the most simple installation, but I have never been known for making life easy for myself.
__________________
Mark H
"A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools" Douglas Adams
Mark Halliday is offline   Reply With Quote
Old 20 June 2008, 11:04   #36
Member
 
Country: UK - England
Town: Blackpool
Boat name: Magic II
Make: Tohatsu 6.1
Length: 6m +
Engine: Evinrude 115 E-tec
MMSI: 235050189
Join Date: Oct 2006
Posts: 151
Send a message via Skype™ to kwil
Mark
Here is a picture of mine cable runs probably it is very similar to your original configuration as it was built by Porters, you can probably see the builders plate in the picture.

I have never had any problem with the control cables being stiff, although I did get water in the trunking until I discovered that the tophat had only been shown the sealant gun before it was screwed in place, I have resealed it and all is now well.

I have also fitted a watertight inspection hatch so that I can check the inside of the trunk every now and then. I can be seen at the left of the picture.

Keith
Attached Thumbnails
Click image for larger version

Name:	IMG_0336.jpg
Views:	186
Size:	68.0 KB
ID:	35654  
__________________
kwil is offline   Reply With Quote
Old 20 June 2008, 11:39   #37
Member
 
Country: UK - England
Town: Nutbourne
Boat name: Renegade
Make: Porter
Length: 6m +
Engine: 140 Tohatsu
MMSI: 235022904
Join Date: Dec 2003
Posts: 1,195
Keith
Thanks for that.
It is a very similar arangement to mine. It even looks like the same top hat moulding.
I think Bruce is right about it being too far aft, but if I bring the whole shooting match forward it is even more in the way.
Also I found it was difficult to clean around as you can probably tell from the picture.
__________________
Mark H
"A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools" Douglas Adams
Mark Halliday is offline   Reply With Quote
Old 21 June 2008, 07:29   #38
Member
 
Country: UK - England
Town: Blackpool
Boat name: Magic II
Make: Tohatsu 6.1
Length: 6m +
Engine: Evinrude 115 E-tec
MMSI: 235050189
Join Date: Oct 2006
Posts: 151
Send a message via Skype™ to kwil
Hi Mark

I agree that it is a pain to clean round, but even with the tight bends I have no binding in the cables, so maybe the binding is a symptom of the cables are past their best and will soon need replacing. Moving the tophat may only be delaying the day when replacement becomes nessecary.
My cables were replaced when the engine was, which was only 2 years ago and the originals only did a couple of years. It could be that the tight bends are shortening the life of the cables and I have never had the cables long enough to find out.

Keith
__________________
kwil is offline   Reply With Quote
Old 21 June 2008, 15:24   #39
Member
 
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
BHG in Lymington rigged my AVON with an ace bit of Stainless trunking- they said it is bit of 'exhaust stub' from a 'BIG' boat. Cant post pics as file size too big for site & I cant shrink them. Run inside consile inside std bit of PVC drain pipe (bonded in) under floor & up stainless pipe- (bonded & screwed). Topped off with hypalon wrap. Unless I put 8 inches of water in the boat nothing goes down. Looks very bling & never going to break if it gets walked into ! In a small Rib it has to be underfloor.....................
__________________
PeterM is offline   Reply With Quote
Old 24 June 2008, 15:05   #40
Member
 
martini's Avatar
 
Country: UK - Channel Islands
Town: jersey
Boat name: Martini II
Make: Arctic 28/FC470
Length: 8m +
Engine: twin 225Opti/50hp 2t
MMSI: 235067688
Join Date: Jun 2005
Posts: 3,021
Quote:
Originally Posted by martini View Post
I'm shortly going to make a stainless plate which will screw to my deck a foot or 2 forward of the engine. On to the plate I'm going to weld a bit of tube at a 60 degree angle which my rigging hose will attach to. This should allow my cables to exit the deck pointing pretty much straight at the motor. I'll post pics when I'm done and you'll see what I mean!
As promised!

http://ribworld.com/forum/showthread.php?t=23520&page=8
__________________

__________________
martini 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 00:38.


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