Cyclists.....punctures? no problem.

[Spycam]

Roy's new PCS (Puncture Control System)
Bike wheels come in various widths and so must their inner tubes, so on each wheel fit two narrower than normal tubes side by side,, with a new hole drilled for the second valve, then pump 'em up and there you have it Roy's PCS..... in the event of a pucture only one tube should be affected.[]

[Spitfire]

Roy, At first glance I thought, `what a great idea`. Then -`why has nobody thought of this before`? My guess would be that the tubes would rub against each other and in a short period of time ,fail. I could be way off the mark of course and indeed no-one HAS thought about it.

[William R]

With today`s technology, should we not be getting a sponge rubber sort of tyre for bicycles? Do away with inner tubes?

Another useless point - did I read somewhere that a motor tyre is being marketed which will continue service even though punctured?
All military vehicles were fitted with R.F.Tyres during the war, and Leylands used to fit them to the W.L.W. Series of Retreiver vehicles, they were assembled at the bottom of North works yard, in a cellar opposite the Coppersmiths Shop. The principle was to fit an annular ring of rubber of tapered section, between the tyre beads which left a void for the inner tube. The limitation was that when punctured you had to run at a reduced speed to avoid overheating.
These wheels were of the split type, with two sets of bolts. Never release the red ones with the tyre inflated, dangerous.

Maybe I have it wrong, but some-one will know.?

[noel]

Solid tires have been available for some years on bikes, in fact since the days the penny farthing bikes came out. These days the solid rubber tires are more comfortable.