Gemini tubes

[ribraff]

Here's Nick's Rib finished and on Sea trials

[gotchiguy]

Originally Posted by willk

Raymarine

Don't diss Raymarine! Their products work.......sometimes.......when it's glassy calm......after a wiggle........

[jezza2011]

Sooo glad I didnt buy these tubes when I needed a retube this year.
As for leaving them outside. I left by boat outside sice it was built and without a cover for 20 years and only needed new tube not form rotting but from wear this year.!!!
total rubbish about not leaving them outside.

I went with hypalon again. I guessed if the origionals lasted 20 years witout a cover parked noext to the A38 in devon then the new ones with a nice cover should last even longer :-)

Sooo glad I went with Hypalaon and not PVC from gemiini.

And as per Steveplumbers comment I agree I spoke to him arround Nov/Dev 2010 re a retube and had the same response. He makes them etc.

[Jack Sparrow]

I'm new to the forum so pls excuse if this has been suggested / discussed elswhere. Too little pressure in your tubes can be as damaging as too much. When not at the correct pressure the water in contact with the tube (planing surface) "grabs" the tube and causes it to wrinkle and with enough time it wll tear, especially at joins in material. I have been told that the correct pressure for a PVC tube is 2.5 - 3 bar (36 - 44 PSI)

[paul tilley]

i think you have got your decimal point in the wrong place i think the tubes would go pop at that pressure

[Jack Sparrow]

Originally Posted by paul tilley

i think you have got your decimal point in the wrong place i think the tubes would go pop at that pressure

Thanks Paul, you're right. That will teach me for repeating "parrot fashion" what a particular dealer here in Perth tells me He definitely quoted those figures but then sold me a pressure gauge which pressure measurements in BAR. I was hoping to get a PSI gauge becaasue my head processors those measurements easier. Here's pics of the gauge which he went on to tell me not to worry about the actual pressure, just stay within the demarcated parameters of the gauge

[Jack Sparrow]

I have just spoken to a manufacturer and he informed me that 3 PSI (0.2 Bar) is the correct pressure for most RIBs