Thus spake "Pete Biggs" <pLime{remove_fruit}@biggs.tc>
> "news.freeserve.net" <
[email protected]> wrote in message
>
news:[email protected]...
> > I have now got through four tubes by splitting near the valve when i
> pump it
> > up. why does this keep happening?
> Apart from any other possible causes, some tubes can be faulty and have weak valve to tube
> bonding. Try a different brand, and try doing without valve lockring if using one (just in case
> being over-tightened and pulling tube down too far, etc).
Some batches of Specialized tubes seem to have been very bad. I don't know if it was the bonding, or
that the rubber at the base of the valve stem was very weak. Certainly, this alone justified my
habit of regularly checking 'spare' inner tubes by inflating them and passing them under water.
--
Helen D. Vecht:
[email protected] Edgware.