42mm should work. I use tubes with 40mm stems on rims 26mm deep. The only time they cause annoyance is when I want to top off a soft tire that isn't completely deflated (can't press the valve all the way out through the tire), so I've started to carry one of those valve nuts on rides with me again.
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Originally Posted by
chandltp
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
RUSA #7498