Cockpit Drain Hoses???

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thesaintlyone

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Replacing the cockpit Drain Hoses on the Jouster....one of the last jobs before launch on the 24th.

Have purchased 32mm hose which was too tight to go back on even tho similar came off so purchased 38mm from the Chandlers but this was too stiff and thus wouldmt clamp down tight enough. Chandlers dont sell anything in between.
So question is

A) any suggestions for getting the 32 to go on
B) Alternative options for something around 35mm that will be soft enough to clamp down with jubilee clips

Should mention that the two drains run straight back to the stern and the hoses are about 36cm in length Not off to the side and are simple skin fittings not seacocks
 
thesaintlyone said:
Replacing the cockpit Drain Hoses on the Jouster....one of the last jobs before launch on the 24th.

Have purchased 32mm hose which was too tight to go back on even tho similar came off so purchased 38mm from the Chandlers but this was too stiff and thus wouldmt clamp down tight enough. Chandlers dont sell anything in between.
So question is

A) any suggestions for getting the 32 to go on
B) Alternative options for something around 35mm that will be soft enough to clamp down with jubilee clips

Should mention that the two drains run straight back to the stern and the hoses are about 36cm in length Not off to the side and are simple skin fittings not seacocks
Click to expand...

Fact of life: Hose comes in two sizes only: too large and too small!

Boiling water I think is the way but you do have to be careful to heat the hose end not yourself. You might have to heat each end and expand over something then fit.
 
VicS said:
Fact of life: Hose comes in two sizes only: too large and too small!

Boiling water I think is the way but you do have to be careful to heat the hose end not yourself. You might have to heat each end and expand over something then fit.
Click to expand...
A lubricated tapered bung inserted up the hose ( hold hose in a cloth to save hurty hand ) swiftly after removing from the ships kettle will stretch the hose dia
 
I prefer a hot-air gun, blown into the hose as well as around the outside, and also warm up the fitting so that it doesn't chill the hose on contact. Rotate the hose as you push it on, in the appropriate direction to open up the spiral.

I've bodged hoses onto fittings significantly larger than their proper size this way. I'd always do it that way round rather than try to crush a too-large hose - if you can get the former into place then you know it will be sound, whereas the latter may well leak and in any case relies totally on the clamp for security.

Pete
 
Oki thanks for all the suggestions will try heating up the 32mm makes sense to have a tight fit.

On the crossing over issue the original ones were not although the drains exit stern approx 2ft apart is it still paramount to cross over
 
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coopec said:
There are a lot of discarded vacuum cleaner hoses and they are quite flexible: maybe they are a possibility?
Click to expand...

Understand that hoses below the waterline are in a sense a part of your hull. If they fail you will sink unless you're able to close the seacock. If you're not on board then you obviously can't; less obviously, if you don't notice until the water is above the level of the leak, then it's hard to tell where it's flowing in from. I've been on a boat where we had no idea the cabin was filling with water until it was level with the bunks, it's not as unlikely as it sounds.

Do you still want to trust the integrity of your hull to bits of discarded home appliance?

Pete
 
I have used the thicker gas version of ptfe tape and wrapped around the smaller pipe to increase it's girth, also used the plastic connector that has several 'reducer' steps in the moulding. l found on outlet pipe of washing macines as example.

Swaging using a heat gun might be best option seal wise, but has hazards of 'collateral damage' to other items, maybe weakening one or both pipes or parts, so due care should be exercised.

Alan
 
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