Originally Posted by
DCB0
On rims drilled for schreader valves, presta valves can be used by putting one nut on the valve before inserting into the rim, and another on the valve after it is inserted through the rim, then tighten it down well and the valve is locked in place.
If you are placing the wheel on the ground and pumping downward, find a rock or a peice of wood to put the head of the pump on. I have used this strategy on the roadside and been able to reach previously unheard of (by me) mini-pump pressures.
Ah possibly, but the jumper is WAY more versatile...
I don't have issues reaching high pressures since the pump I'm using is a frame pump, and the jumper would allow me to position it exactly like the aforementioned morph or regular floor pump minus the funky bracket but plus some versatility.