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Old 15 July 2017, 05:26   #1
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Tube pressure, do you use a gauge?

Hi all
Last week I put some more air in the rib tubes as they were slightly baggy.
Do people use a pressure gauge or just use the push test?
I know there is always a lot of warnings about over pressuring them?
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Old 15 July 2017, 06:48   #2
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Too low a pressure will also do a lot of damage to tubes
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Old 15 July 2017, 09:47   #3
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Quote:
Originally Posted by two stroke mick View Post
Too low a pressure will also do a lot of damage to tubes
Yep....and quickly!
Never used a Gauge... you soon get to know the "sweet spot" and can Top up or deflate as conditions (Mainly Tempreture) dictate.
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Old 15 July 2017, 12:10   #4
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Old 15 July 2017, 12:46   #5
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Just tried a gauge a couple of weeks ago to check pressure. Quite surprised how hard 2PSI (100mmHg) is.
I use bellows to pump up the tubes and I'd be surprised if you could get them much harder without bursting the bellows
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Old 15 July 2017, 15:49   #6
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Yes. As mentioned, the correct pressure is usually far higher than you think. Better to be sure to avoid damage. Pump up the tubes to what you think feels right and then check the actual pressure... you will probably find you need to add more air.
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Old 15 July 2017, 16:56   #7
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Quote:
Originally Posted by acraw View Post
Hi all
Last week I put some more air in the rib tubes as they were slightly baggy.
Do people use a pressure gauge or just use the push test?
I know there is always a lot of warnings about over pressuring them?
So I think the important question here is "do you have overpressure valves?"

If you don't - you'll do well to know how much pressure you pump to and what happens when things warm up in the sun. Once you get close to 2psi, things looks/feel very similar as the pressure rises from there.
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Old 15 July 2017, 18:18   #8
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I'm new to ribs and also wondering how to judge correct pressure by feel. I see alot of posts that say "when you can't depress with finger pressure." So does this mean when you can't depress at all? We've pumped up ours pretty hard but you can still depress a few millimetres. We are using a foot pump so I also have read that you can't over inflate with a this. Is this correct? Thanks!
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Old 16 July 2017, 14:14   #9
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We are using a foot pump so I also have read that you can't over inflate with a this.
What do you mean by a "foot pump"..... not a tyre inflation foot pump.
That could massively over inflate it. They are also low volume pumps so will take forever.
If it's bellows then I'd guess you're unlikely to over inflate very much with that. I find they get quite difficult as you get to near to 2 PSI
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Old 17 July 2017, 02:41   #10
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Reading this thread prompted me to look at pressure gauges we have a few ribs in the family with different valves so I guess a universal gauge will be best but I'm wondering if it's just a push fit or a pump through gauge how is the valve depressed to get a reading? Do you test with the valve open then close it quickly before it loses to much air or do the adapters that come with the universal gauges depress the valve
What are people using?
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