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Old 02 June 2008, 12:51   #11
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Originally Posted by codprawn View Post
I DID say to check first!!!

I am suprised at Zodiac not fitting them - my humble Quicksilver has them as standard.
It makes sense not having a release valve on the keel...a hard impact on a wave would probably increase pressure enough to drop air.
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Old 02 June 2008, 14:28   #12
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Originally Posted by AndrewUkR6 View Post
thanks for this. The pressure gauge attatches to the end of the hose. I did actually think to cover it with my hand and it seemed to remain steady. I tried it again on the boat and if i forced it down with my hand i got a couple of the tubes to remain steady on pressure but another couple didnt want to seem to work correctly.

Might invest in another pump and see if it gets easier! Can i easily damage the SIB by overinflating?
You should try with a better inflator like a double action vertical high pressure pump, some brands has hoses and adaptors that cannot be embon to sib's air valves, in that case try to embon the new hose to the original air hose using duct tape or 3M black tape to seal air lost while pumping. If attached with the same valve diameter adapter ok.

Will highly suggest to use a hand manometer, seems many Ribnetteers don't care about it's use at all. The sibs/ribs that uses auto presuure relief valves on their boats, as Codprown boat does, don't need it at all. Would say that most of the standard sibs on the market don't use this type of valves yet, only the more expensive brands like some high end Zodiacs to mention one.

Find completely weird that 100% of the Ribnetters that post on the forums use a pressure gauge regulalry to inflate their car tyres for their cars to peform well and extend gas millage and won't we willing to use them on their expensive water toys for the same issue. If they are hard to find will undertsand not using them. But if available and they're cheap, why not.

If you haven't use a manometer previously to compare readings against finger touch inflation procedures, you won't have the slighliest idea of how much missing air should be put into the tubes. Other stupid method is to inflate tubes untill the end cones don't bend. Most of the sib's tubes require a working pressure of 3.5 PSI. You can feel tubes & cone ends hard enough with only 2/2.5 PSI, still 1 more PSI to go.Why guess, that's what manometers are for, use them!

Would you still inflate your car tyres by finger touch ?

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Old 02 June 2008, 16:56   #13
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The futura has huge tubes and more valves / compartments to inflate than most other sibs .
I couldn't imagine how much hassle and time it must take to get it inflated properly with a hand pump . Go get a bravo HP2 electric pump just set the pressure dial and wait for it turn off at the right pressure .
best 99 I ever spent when i had a sib .
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Old 26 June 2008, 12:11   #14
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Originally Posted by codprawn View Post
Mine are combined valves - basically you just keep pumping until they vent off. I try not to pump the tubes up that hard but it doesn't do any harm.

They are seperate valves on my RIB.
Seems that by mistake you have posted the over inflation valves issue reply on the wrong forum. Now, this is a new SIB forum, that I know none of the standard less pricy plywood/alum floor sibs comes with overinflation valves, unless you change/add them to sib's tubes.

Your RIB comment "They are seperate valves on my RIB" can be erroneously interpreted by SIB newbies as they will not know the difference between a standard valve (Halkey Roberts Type) and a overinflation valve. Imagine infllating a standard Sib with a tyre air compressor...Booom!!

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Old 26 June 2008, 12:45   #15
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Originally Posted by Locozodiac View Post
Seems that by mistake you have posted the over inflation valves issue reply on the wrong forum. Now, this is a new SIB forum, that I know none of the standard less pricy plywood/alum floor sibs comes with overinflation valves, unless you change/add them to sib's tubes.

Your RIB comment "They are seperate valves on my RIB" can be erroneously interpreted by SIB newbies as they will not know the difference between a standard valve (Halkey Roberts Type) and a overinflation valve. Imagine infllating a standard Sib with a tyre air compressor...Booom!!

Happy Sibbing
loco as ever your post has turned into a bit of a rant and kind of drifts off topic... ...however I don't think you can expect the SIB forum never to have mention of RIBs and likewise SIBs never to be mentioned in the other forums.
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Old 26 June 2008, 12:52   #16
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Originally Posted by Locozodiac View Post
Find completely weird that 100% of the Ribnetters that post on the forums use a pressure gauge regulalry to inflate their car tyres for their cars to peform well and extend gas millage and won't we willing to use them on their expensive water toys for the same issue. ..........
......Would you still inflate your car tyres by finger touch ?
I would suggest that 100% of people do not use a separate pressure gauge to inflate car tyres - they use the gauge that is fitted to the pump (with no knowledge of its accuracy/calibration, or indeed often the correct pressure). I believe only a small proportion of vehicle owners in the UK even own a separate pressure gauge, and actually a fairly large number don't even have a pump!

Most casual cyclists inflate their bike tyres by touch - for the same reason as their boats - the standard pumps don't have manometers built in.
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Old 26 June 2008, 13:33   #17
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Originally Posted by Polwart View Post
I would suggest that 100% of people do not use a separate pressure gauge to inflate car tyres - correct pressure).




I believe only a small proportion of vehicle owners in the UK even own a separate pressure gauge, and actually a fairly large number don't even have a pump!

Most casual cyclists inflate their bike tyres by touch - for the same reason as their boats - the standard pumps don't have manometers built in.
I use a brass footpump circa 1950 with a leather plunger that will blow up a tyre in a 3rd of the time the modern rubbish takes. I have seperate pressure guage.

I'd be interested in knowing how accurate your 100% is,I would think I'm in the minority but surely I'm not on my own?

I've had the RIB a year and never had to touch the tubes, if I did I'd do It by feel not by guage.
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Old 26 June 2008, 13:43   #18
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I'd be interested in knowing how accurate your 100% is,I would think I'm in the minority but surely I'm not on my own?
Just to clarify - and drift even further off topic... I was suggesting that significantly less than 100% of people do use a separate gauge rather than saying that 100% do not.
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Old 26 June 2008, 13:54   #19
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someone last week someone asked about tube presures on zodiac futuras on another thread, i called up our local zodiac dealer and he said 3.4 psi max . most pressure gauges on foot pumps are only a guide the best way is to use a seperate pressue gauge with as large dial as you can find for more acuracy, most sibs use less pressure and i dont think its a bad idea to let a bit out if not in use ,also in warm or cold weather conditions and the colour of your sponsons or tubes will have an effect on pressures ,when i launch i usually have a run about in the boat for a few mins then top off the tubes its suprising how much they will drop with a bit of cold sea over the boat. where i normally launch we are prone to local fog or sea frets for the local word and i can trail the sib for an hour with the tubes fine get to within a half mile of the coast and the boat will go floppy and sag on the trailor. mart .
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Old 26 June 2008, 20:25   #20
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To Clarify the Post

Forget about if posted on the wrong forum, don't take it so seriously. According to your personal profile you own a large Rib, so what you have quoted is reffered to your RIB overpressure valve. The original thread was about Inflate Futura and it's a Sib, that's all. Don't know if you own a Sib, don't remenber if you have ever posted having one. Good idea to have separate forums, each one will take water to therir own mill and ocassionaly share some together.

About my "repetitive" car type pressure gauge issue, was an example, sorry to say but we live in different worlds, donw here haven't seen any gas station where you can inflate your car tyres having pressure gauges attached to the air hose, so erroneously concluded that everybody used hand gauges. Thought that UK PCL brand tyre gauges where used worlwide, not only in third world countries. Can't compare cyclist tyres against sibs, cyclist tyres use between 50 to 100 PSI, huge pressure, very low air volume, Sibs/Ribs huge air volume, very low PSI. What gives more rigidity : Air volume + adecuate PSI.

There are many sibbers fans of cone touch finger gauging inflation, is their form for inflating, there has been plenty discussions about inflation procedures, as a result, lots of information available about this topic. Let new sib users decide the advantages of it's use to consider if they would like to use/buy them for a better water performance of their new toys. If a person dislikes using them, doesn't mean that everybody dislikes them too.

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