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Clem Clement · 05-11-2011, 08:21 AM

We had very few paved roads. Much of the driving was in mud, partricularly in the rainy season. The nut on the metal stem has a leather backing which sealed the stem hole in the rim. The cap screwed onto the nut and protected the stem from the muud and junk.

05-11-2011, 08:21 AM	#2
Clem Clement Senior Member Join Date: May 2010 Location: Fairfax, VA Posts: 3,393	Re: Why did they use metal valve stems? We had very few paved roads. Much of the driving was in mud, partricularly in the rainy season. The nut on the metal stem has a leather backing which sealed the stem hole in the rim. The cap screwed onto the nut and protected the stem from the muud and junk.