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Old 17 March 2011, 08:57   #1
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Pressure Relief on your HOT TUBES ;)

What is everyone's view on the importants of having Pressure relief valve fitted in their sponson?

I have a Ribcraft 585 and it doesn't have them fitted and on a sunny day it can really get very hot and hard!!!!

Ribcraft sell the pressure relief valves for about 12 each I need 5 of them. The question is whether its worth the time and money to fit them.

Is it going to be sunny this summer?????

Cheers,

Paul
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Old 17 March 2011, 09:45   #2
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What is everyone's view on the importants of having Pressure relief valve fitted in their sponson?

I have a Ribcraft 585 and it doesn't have them fitted and on a sunny day it can really get very hot and hard!!!!

Ribcraft sell the pressure relief valves for about 12 each I need 5 of them. The question is whether its worth the time and money to fit them.

Is it going to be sunny this summer?????

Cheers,

Paul
If you are going to leave your boat in a dry and uncovered location (outside the garden!) then yeah, perhaps it is something worth paying for. But if the rib is used on the water whilst it is outside your garagem the water will cool it down.
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Old 17 March 2011, 09:49   #3
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If the Ribcraft was second hand when you bought it, then it must be a survivable risk! If you don't pump it up hard on cold days and leave it like that, it should be OK.
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Old 17 March 2011, 09:53   #4
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Are you sure that you haven't already got them? Mine came as a standard fitting and I thought Ribcraft fitted them as standard across their whole range. The pressure at which they operate is, however, quite high - around 3 psi, I think, with a recommended operating pressure of 2.5 psi which gives a pretty firm tube.

David
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Old 17 March 2011, 10:00   #5
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Are you sure that you haven't already got them? Mine came as a standard fitting and I thought Ribcraft fitted them as standard across their whole range...
That was my first thought, but a quick look at the Ribcraft 5.85 on-line brochure lists them as tube accessories. When we bought our 5.3 boat, my understanding was it came with them whether you wanted them or not.
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Old 17 March 2011, 10:26   #6
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They're were fitted as standard on my new 5.3. The recommended pressure is 2.0- 2.5psi, which does give a pretty firm tube.

On my Avon, I just deflated the tubes a bit when leaving her - especialing in the summer. It's not a long job to pump a bit of air in before using her.
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Old 17 March 2011, 10:48   #7
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Good Question

I've often been asked and wondered whether relief valves are necessary? Can't recall ever seeing any damage caused to a RIB by tubes over heating? Has anyone ever had such a problem? Clearly the manufacturers don't think it's a necessity!
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Old 17 March 2011, 11:45   #8
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Can't recall ever seeing any damage caused to a RIB by tubes over heating? Has anyone ever had such a problem?
I've seen split seams from over pressure.

Issue comes when setting pressure v early morning, then getting a big change in temp at midday.
Black tubes don't help either, but they look good when not burst :P
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Old 18 March 2011, 21:31   #9
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I'd not buy a boat without them. Even down here the tubes can get singing tight if you blow them up and then there is a couple of hours of direct sunlight and no wind. Mind you both my boats had/have black tube top patches which probably doesn't help.
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Old 19 March 2011, 08:50   #10
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Thanks to you all for your advise.

It seem to be a good idea to fit them as my boat lives on the trailer in the sun.

Does the 12 per price tag seem ok as I have have searched the net and not much came up?

Thanks again,

Paul
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