Posted: 15:42 - 08 Nov 2020 Post subject: Inner tube prolapse
Fixing one of SWMBO’s grandkids bikes which lost 7.5 psi in about 4 hours. Can’t see any obvious leaks but the inner tube looks, well, not good. Is this possibly the cause of the loss of air, has it ‘gone slack’?
It doesn't bode well though, in that state. What size? You can nip down to Poundland for anything 20 to 26" if it's just a kids' bike. ____________________ Yamaha XSR700, Honda Rebel,Yamaha DT175,Suzuki SV650 (loan)Fazer 600,Keeway Superlight 125,50cc turd scooter
Posted: 01:27 - 09 Nov 2020 Post subject: Re: Inner tube prolapse
Keithy wrote:
Fixing one of SWMBO’s grandkids bikes which lost 7.5 psi in about 4 hours. Can’t see any obvious leaks but the inner tube looks, well, not good. Is this possibly the cause of the loss of air, has it ‘gone slack’?
Posted: 01:43 - 09 Nov 2020 Post subject: Re: Inner tube prolapse
thx1138 wrote:
Keithy wrote:
Fixing one of SWMBO’s grandkids bikes which lost 7.5 psi in about 4 hours. Can’t see any obvious leaks but the inner tube looks, well, not good. Is this possibly the cause of the loss of air, has it ‘gone slack’?
dodgy valve
I got a brand new bike that did it, replaced inner tubes, still looses air lol
Posted: 22:59 - 13 Nov 2020 Post subject: Re: Inner tube prolapse
bugeye_bob wrote:
I got a brand new bike that did it, replaced inner tubes, still looses air lol
How quickly do they loose air? Tubes do loose air over time and it's perfectly normal. They are not perfectly air tight, air seeps through the rubber and the valve o-ring (seal). However you shouldn't find your bike with completely flat tyres after just a few hours after inflation.
By the way, higher the air pressure you run, quicker this air leakage occurs. Road bikes lose air quicker than MTBs, for instance. I run 6 BAR front and 6.5 BAR back on my road bike and this drops to about 5 BAR in about a week. ____________________ '87 Honda XBR 500 - '96 Kawasaki ZX7R P1 (sold) - '90 Honda CB-1 (sold) - '88 Kawasaki GPz550 (sold)
'95 Mercedes-Benz w202 C200 CGI; At my disposal: MZ 150 ETZ, not anymore.
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