"mark" <
[email protected]> wrote in message news:<
[email protected]>...
> "MartinM" wrote >
>
> I first saw Schraeder in about 1970 on kids
> > bikes only, it then spread to MTB's.
> >
> > I did buy a kids bike with Woods about 5 years ago.
>
> Schrader valves were the norm in the US on almost all bicycles (kids, adults, whatever) long
> before 1970. The idea was to enable the cyclist to inflate his tires at a gas station (sorry,
> "inflate his tyres at a petrol station") instead of having to pump them up by hand.
>
> Could someone please explain what a Woods valve is?
It's the one which has a removable valve which screws in to the tube with a larger knurled knut. The
air was kept in by a rubber sleeve which slid over the barrel of the valves and needed replacing at
regular intervals. You can still find them in Halfords etc, but they are only slightly narrower than
Scraeder so can easily be changed over. They were difficult to inflate to high pressure because the
pump only screwed against the end thread unlike a Presta which had a smooth barrel to keep the
pressure in .With the advent of track pumps Woods can now be inflated to fairly high pressure. I
remember many explosions with my Schrader valves at Petrol stations before a general ban on bikes
using garage air lines (of course until you started having to pay for it;-)