Technical & Reference Section > Tech and Restoration

What keeps the pressure in tyres?

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McQUEEN:

--- Quote from: Gnarlyscoots™ on January 13, 2015, 03:54 PM ---Where do you keep the bike? If it's kept in a warm room, the tubes lose pressure too, especially if they were blown up using a high pressure or electric pump  :)

--- End quote ---

The bikes are all kept in my office which is always above 19degress. I use an old fashioned hand pump (saves me an arm work out down the gym?!) I have three others built up and these tyres don't lose their pressure...

I swapped out again the inner tubes, pumped them and left them underwater in the bath. Nothing to see to begin with (i.e. not like a full on puncture where bubbles form and come out straight away) and then after a few hours noticed bubbles forming around the seam with the valve....

McQUEEN:
so its bad inner tubes. from Halfords.

McQUEEN:

--- Quote from: griff on January 13, 2015, 04:12 PM ---If they're 80s tyres then you really shouldn't be using modern air to pump them up - this can be very dangerous (remember the cross ply / radial public service films?*

Get yourself some NOS air - available from reputable retailers and the internets







* here's that radial/cross ply film for anyone too young to remember  :2gunsfiring_v1:
/>
--- End quote ---

 :wtf:

i've been putting nitrogen in my GTR tyres for awhile that works fine......


i wish!

ED209:
 :daumenhoch:

bigfatolly:
Halfords Inner Tubes are carp,I bought one that was flat within a day

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