Originally Posted by
scarlson
I often like using Schrader rims with a grommet to presta to avoid this problem. The grommet takes all the abuse the rim can dish out and the tube stays perfect.
Do you off hand know where I can find the grommets? The last time I saw these offered was in the 70s, of course I haven't looked for them since.
Cheap or old tubes will still pull out at the valve, however.
I'm inclined to put the blame for too loose valves on the ARAYA's as a reflection of the reduction in materials used to make modern tubes. The rims were designed for off-road use; original tubes were heavier all around.
Conversely, the Shrader valves have struggle to get into the hole on the one CR-18 rim designed for it.
The polluted Boston air seems to do a number on them, tubes lasted forever back in Vermont.
Our rural setting hasn't been too bad for air quality, although, black soot from diesel-burning trucking going through our little city coat the houses along the main drag. Bleck. I can't imagine why anyone would want to live on these streets.