Anyone know anything about disc brakes?

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edscoble in reply to @TurtleRecall

Because Lezyne pumps screw onto the valve, you pump the tyre up, unscrew the pump and it unscrews the valve core with it.

Pressing the little button on the side didn't work?

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bertocq in reply to @edscoble

Pressing the little button on the side didn't work?

The little button on the side of the Flex Hose just releases the pressure inside the hose, it's not a shortcut to avoid screwing the hose on the valve.

@TurtleRecall I suffer that problem sometimes with continental inner tubes with removable valve cores, but still haven't found a better pump (flex hose is a great feature for me). Just avoid tightening too much, and carry a valve core tool just in case

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Howard in reply to @bertocq

The little button on the side of the Flex Hose just releases the pressure inside the hose, it's not a shortcut to avoid screwing the hose on the valve.

The button is designed to prevent the valve core from being unwound by the pressure in the hose :)
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Mikey5000 in reply to @bertocq

Or use a spoke key to tighten up valve cores - seems to work ok.

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