Review on 🚴 Efficient Blackburn Mammoth 2Stage Anyvalve Bike Mini-Pump for Quick Inflation by Adrian Retana

This is a really terrible pump. In high-volume mode, it takes a lot of power to drive the pump, even when it's not connected to a tire valve. Adding a deflated hose makes the pump even more difficult to use. In the high-pressure mode, the pump is quite easy to use, but does not allow to use such a large volume. The mechanism that must attach the pump to the valve is also very weak. I couldn't get more than 18psi in a 27.5+ tire without spontaneously dislodging the pump head from the valve. And I could only reach this pressure in high-pressure mode. The standard mammoth pump (single stage) is more powerful than this oversized pump. With some effort, motorcycle tires will inflate up to 30psi. The tiny Airstick 2 is actually the best mountain bike pump ever, it's very small and light.