afb

Removing the valve core makes a huge difference. Problem: the Presta side of the head on my snazzy Lezyne two-chamber pump grips the valve core. Solution: the Schraeder side screws onto a Schraeder stem. So find a Presta rim lock ring, and a Schraeder stem cut from an old tire. Buy two micro hose clamps and a short length of 3/8" clear Nylon tubing. Spin the ring onto your de-cored Presta stem. Slide one end of the Nylon tube over the ring, and clamp the tube over the ring. Shove the Schraeder stem into the other end of the Nylon tube and clamp that end. You're good to go. But first run some TriFlo around the tubeless tire beads Happy pumping :)