Originally Posted by
chaadster
Whoa! Do you mean the valve core got pulled out? Pulling the valve stem out of the tube seems…incredible! If it was the valve core, any idea why they didn’t just screw it back in?
I have sheared the stem off using a hand pump once. My rookie mistake was leaning the wheel against a wall and only holding the pump, which in turn sawed back and forth until it ripped the whole stem off.
Originally Posted by
chaadster
Some complain of Lezyne hose pumps— which thread on— unscrewing valve cores when removed if not done with care, and I’ve pulled a core from a plastic valve stem with a fixed head Specialized Air Tool Road pump once, but I’d have thought that was rare, because most valve stems are metal, I think. Anyway, I was able to screw the core back into the stem without any problem, so maybe it was loose when I started and I only stripped a couple of stem threads pulling off the pump…
I now use one of those thread on hose pumps from Lezyne. Haven't had a problem, and I no longer need to cradle the whole wheel and pump in my hand to avoid above mentioned mistake.