D-

Well-known Member
Since you're almost as old as me have you ever seen a red patch?
What about a red tube?
This is probably an original tube from an H.
Instead of a round "nut" to hold the valve stem above the rim
it had a brass cup that threaded higher on the stem.
a235650.jpg
 
I've seen those, but have no explanation for the red part. I only remember using standard black. They came in a tin trough loaded with the patch part on the outside and inside the trough was expanded fiber loaded with saltpeter otherwise known as potassium nitrate, the major ingredient of black gunpowder. You used a small C shaped anvil with a screw down, four foot 'birds foot' deal to hold the patch to the tube and lit the trough on fire. Let it cool down and you've vulcanized a patch on that won't come off. Always a trapezoid shape, always the same size too. Took about 30 seconds for the stuff to fizz, burning from one end to the other, they got very, very hot. This goes back to the late 60s, by the mid 70s they were already impossible for us to find refills for although I suspect they are still being made somewhere quite remote like Bangkok or India. They would of course be an insurance company's worst nightmare today.
 

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