Reply
 
Thread Tools Search this Thread
 
Old 11 January 2011, 09:21   #1
Member
 
Country: USA
Town: Pasadena
Boat name: El Barco Más Rudo
Make: Avon
Length: 4m +
Engine: Tohatsu 40HP
Join Date: May 2010
Posts: 39
Drain sock

I'd like to add a couple of drain socks to my Avon but the scuppers are only about 25mm ID. The commercially available socks start at 680mm. Is there a way to DIY or adapt drain socks to fit my boat short of drilling the transom?

Cheers,

Jon
__________________

__________________
Delta 15 is offline   Reply With Quote
Old 11 January 2011, 11:16   #2
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
I guess buy a bit of matching (or not) colour hypalon + glue and make your own ?

Or am I missing the point ?
__________________

__________________
PeterM is offline   Reply With Quote
Old 11 January 2011, 11:49   #3
Member
 
Country: USA
Town: Pasadena
Boat name: El Barco Más Rudo
Make: Avon
Length: 4m +
Engine: Tohatsu 40HP
Join Date: May 2010
Posts: 39
That's what I was wondering. Rib-shop told me the scuppers in the boat are too narrow to allow use of a sock.

I guess I'm not quite clear on how they work. I assumed that they drain water when the boat is underway but close up when the boat stops due to external water pressure?

Does it have to be hypalon or would a piece of PVC? If it's a question of water flowing back in when the boat stops, I can just put the plugs back in when the water has drained.

Cheers
__________________
Delta 15 is offline   Reply With Quote
Old 11 January 2011, 11:58   #4
Member
 
chewy's Avatar
 
Country: UK - England
Town: Up Norf
Make: Avon SR4,Tremlett 23
Length: 4m +
Engine: Yam 55, Volvo 200
Join Date: Apr 2007
Posts: 5,217
Trunk down = water drain when underway, leave it down when you've stopped and it'll slowly fill back up.
Trunk up = water won't drain but then the trunk won't let water in either, simples.

A 25mm trunk will work but not very well, I'd just bite the bullet and buy the biggest one!
__________________
chewy is offline   Reply With Quote
Old 11 January 2011, 11:59   #5
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
PVC will work I am sure & any size will drain if given enough time- just be slower for obvious reasons....

I always used to put bungs in if not 'actively' using mine - just stops the small trickle that will eventually fill the boat if left down.
__________________
PeterM is offline   Reply With Quote
Old 11 January 2011, 12:36   #6
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 Delta 15 View Post
The commercially available socks start at 680mm.

I'm guessing you mean 68mm

It would be dead easy to get a core bit and drill your transom out to take a bigger trunk, 25mm is properly small and you'd benefit greatly from a bigger one.

Find a trunk that has an I/D that matches the O/D of a pvc drain pipe, drill transom to suit pipe, sikaflex it in then glue the trunk to the pipe. Seemples
__________________
martini is offline   Reply With Quote
Old 11 January 2011, 13:18   #7
Member
 
Country: USA
Town: Pasadena
Boat name: El Barco Más Rudo
Make: Avon
Length: 4m +
Engine: Tohatsu 40HP
Join Date: May 2010
Posts: 39
Ah, yes -- 68mm indeed!

Thanks for all the feedback - very helpful.
__________________
Delta 15 is offline   Reply With Quote
Old 11 January 2011, 13:26   #8
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,114
Quote:
Originally Posted by Delta 15 View Post
Does it have to be hypalon or would a piece of PVC? If it's a question of water flowing back in when the boat stops, I can just put the plugs back in when the water has drained.
if you're going to put bungs back in when drained then why bother with trunks? the advantages of trunks are: (a) you can leave them down for shortish periods without worrying about the boat filling up significantly (whereas with bungs the boat will fill as soon as you come off the plane) (b) you can (if you wish) operate them remotely using a long cord. This is especially useful if you are single handed as with bungs you'd probably have to leave the helm to either fit or remove them.
__________________
Poly is offline   Reply With Quote
Old 11 January 2011, 13:35   #9
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
Quote:
Originally Posted by Polwart View Post
if you're going to put bungs back in when drained then why bother with trunks? the advantages of trunks are: (a) you can leave them down for shortish periods without worrying about the boat filling up significantly (whereas with bungs the boat will fill as soon as you come off the plane) (b) you can (if you wish) operate them remotely using a long cord. This is especially useful if you are single handed as with bungs you'd probably have to leave the helm to either fit or remove them.
I'm thinking he is thinking for periods of more than say 20 mins+ ........ the best trunks in the world will let water in which will be noticed after that time...
__________________
PeterM is offline   Reply With Quote
Old 11 January 2011, 13:48   #10
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,114
Quote:
Originally Posted by PeterM View Post
I'm thinking he is thinking for periods of more than say 20 mins+ ........ the best trunks in the world will let water in which will be noticed after that time...
Aye but normal practice (IME) is simply to raise a trunk when sitting still for a while - the only time I can imagine adding a bung as a backup would be if leaving it afloat overnight and worried about the trunks failing (e.g. through wear and tare). Moreover with a 1" tube I suspect (unless its made from some very flimsy/vulnerable material) that it will leak more than a 3" trunk - as it won't collapse as flat? Personally I have a 40mm (?) bung which is central (so can't take a trunk as the engine is there) and manage OK. Trunks aren't really an option due to the transom design - so I've added a bilge pump so I have an alternative when alone and unable to leave the helm when the boat is on the plane. I have wondered about the "duckbill" drainers - which might be an option for the OP?
__________________
Poly 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 11:07.


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