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Old 03 May 2016, 03:48   #1
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60mm expanding drain plug is missing

I have elephant trunks on my RIB.
When set them low water flows to RIB when some people seats on the back couch.

So I have decided to find 60mm diameter plugs - I do prefer expandable.

To use them from inside the boat and have trunks set low.

It can be plug or some one direct valve (from the deck flow)

Pipes are really big and I can not find anything for 60mm diameter on internet.

Many thanks for help
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Old 03 May 2016, 03:54   #2
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Why not pull up the trunk??
Or how about this?
http://www.ebay.co.uk/itm/PIPE-STOPP...u4YmLxKkx3nSuw
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Old 03 May 2016, 04:32   #3
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Thank you. Will try these ones.

Even I set them up there is some small flow when stop RIB or reduce speed urgently.
So I think that it be easier to have them down and just in case unplug pipes from inside the boat.
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Old 03 May 2016, 05:57   #4
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25 GBP shipping cost to Poland from this seller (the cheapest method).

I have sent them email if they can consider to lower shipping cost.
Will try to find these in Poland also. Thanks again
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Old 03 May 2016, 07:03   #5
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Quote:
Originally Posted by MatFromPoland View Post
25 GBP shipping cost to Poland from this seller (the cheapest method).

I have sent them email if they can consider to lower shipping cost.
Will try to find these in Poland also. Thanks again
Any plumbers merchant should have them, make sure you go for the plastic ones, the galvanised ones don't last and leave rust marks all over the deck.
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Old 03 May 2016, 09:14   #6
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OK. My questions is:

Anyone has tried to add to end of elephant trunk something to make this end afloat ?
On the end of trunk there is a rope so I can fix something like this:


Maybe I'm wrong but when trunk be afloat maybe it prevents water to return ?

Or like this (more streamline)
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Old 03 May 2016, 10:06   #7
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Thank you. Will try these ones.

Even I set them up there is some small flow when stop RIB or reduce speed urgently.
So I think that it be easier to have them down and just in case unplug pipes from inside the boat.
With your trunks UP you still get water leaking back into the boat?
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Old 03 May 2016, 10:14   #8
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No done it myself but a bit of bungee cord attached to the end of the trunk to lift it up out of the water, but when you need it the weight of the water in it will push the trunk down till it is empty!
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Old 03 May 2016, 12:42   #9
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With your trunks UP you still get water leaking back into the boat?
1. When I UP them probably there were some water inside so it flows into deck
2. When you stop urgently (VIPER on my boat is on wild side - accelerated fast but stop fast also) water is almost at end of the transom level (never exceed it). In this case a little water goes into trunks also

So my idea is:

a) add below mentioned item below on the end of each trunk. There is a cord on the end of each elephant trunk and this item has perfectly fitted hole so I can easily mount item to the cord


b) not idea how to check if I have leak in trunks. Maybe I will enter garden pipe into drain tube on the deck and inspect if there is any other flow than end of elephant trunk
c) my idea is simple. I hope that makes trunk elephant float I will minimize amount of water returning back or flows to the deck (when reduce speed or stop)
d) the cost of these items is 1,5 GBP each so why do not try
-- not idea if this item last after fast trip but why do not try.

>>>>>>>>>>>>>>>>>>>>

If I find any leak in trunks where to buy good quality one ?
Here ?? http://www.rib-shop.com/drain-sock/
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Old 03 May 2016, 12:50   #10
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No done it myself but a bit of bungee cord attached to the end of the trunk to lift it up out of the water, but when you need it the weight of the water in it will push the trunk down till it is empty!
I will try this also but I need to find bungee cord:

- solid to keep trunk over water surface
- sensitive, easily expanding that even small amount of water (garden pipe for example) will take it down.
- solid to last year or more until change
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Old 03 May 2016, 13:02   #11
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Just get some hypalon and make longer trunks?
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Old 03 May 2016, 13:20   #12
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Will longer work?

You either as suggested need to lift them up a bit with shock cord, or make the seal better. Are they lying flat or like a tube ?

Not sure floating will make any difference

But their job is to quickly drain the deck. The dribble coming back in as you lift them needs a different route out... ...pump?
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Old 03 May 2016, 13:41   #13
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I have automatic bilge pump (whale automatic 1300) plus manual switch (not idea about English name but you have to press and keep pressing to make pump work)

But I be happy also to have trunks work only one way ... And keep them down each time except port (if float them reduce back flow even keep them down at port)

First of all I'm going to check if there is no leak in them.
Mine are PVC (I think). Not sure if neoprene/hypalon be better but I can try
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Old 03 May 2016, 13:52   #14
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Its easier to keep them up but have them on a quick release system that if you hit a big wave you just tug the quick release, power off, drain and pull them back up...
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Old 04 May 2016, 08:48   #15
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Quote:
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With your trunks UP you still get water leaking back into the boat?
Pushed by your question I have tested trunks.

One of them has leak



In area marked by red circle there is a leak. Trunk was not good glued here so I can even insert here a pen.

I have few options now:

1. Seat and cry ...
2. Order new trunks
3. Glue this one

I'm focusing on option no 3 but have few questions:

A) I do have VINYCOL 1520 m2 (just arrived). It is can and small bottle.
I have not idea how to use them
B) do I have to make this hole bigger ? It is connection between to opposite part of PVC material. It is not damage but simple lack of glue in this area.
C) DO I need to use any solvent first (MEK ? Acetone )
It was main reason to water come back via this pipe.

Any advice "how to glue it" be welcome (answers for A,B,C questions)

>>>>>>>>>>>>>>>>>>>

Manual for HIGHFIELD boat states that the only one glue for VALMEX is Bostik 999 PVC glue. I can not find it on the internet (to buy it). Any advice where to buy be welcome.
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Old 04 May 2016, 10:07   #16
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Or BOSTIK 1782 as replacement and not require heating like 999
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Old 04 May 2016, 10:38   #17
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Mat, glad you have found the source. I can't offer much advice on gluing as I don't do blow up boats but it looks like the leak is near the fold when it is in the up position - presumably that gets some stress?

I'd consider replacement. if you can find the right size then lay flat tubing (fire hose? or agricultural supplier?) is a relatively cheap option...
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