Park tool bicycle pump

The gage on my pump was off by 15 PSI, so be sure to check yours. I just compensate by pumping to a higher gage reading. Overall this pump is a good value, just be ready to need some force to get the head to seat, and again to remove it.

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Remove Filters. Related Pages. Park Tool K. In narrow rims, clincher tires also leave insufficient space between tire beads for larger Schrader valves.

In contrast Schrader valves are more robust, universally used, and have an easily removable core. Start hand expressing by gently massaging each breast in a pumping motion, so that your squeezing and pulling the breast out, and then releasing as it falls back into place.

It gets power by the pump through a connecting rod. It moves upward and downward according to the handle movement. As the piston moves upward, it generates a vacuum inside the pump cylinder, and water starts entering into the cylinder. When the piston moves downward, it draws water out of the pump. If we plan on continuing to use our pump, we'll need to figure out how to retrofit some sort of 2x4 situation to the base since ours broke in half.

While we're at it, we might try engineering a new handle to give our wrists a break from the uncomfortable curved design. The head of the PFP 8 was the most difficult in our test to attach. There are separate ports for Presta and Schrader valves; whereas other pumps feature a split head design, this one stacks the two valve ports one atop the other. Each is marked with a P and S for Presta and Schrader, appropriately. Even so, it's simple enough to determine the correct port due to the obvious size differences.

The plastic legs on this stand could benefit by being a tad longer. While plenty wide enough, we felt a bit squished using this pump. Six rows of tiny knobs on the support legs act to keep your shoes from sliding around when standing on them during pumping.

The legs are low-profile at about half an inch in height, so you hardly notice them underfoot, with the teardrop shape forming the center of the base, holding the gauge and the hose. Unfortunately, our test pump is no longer stable at all. It only took one "chuck it in the truck" test to shear the base apart. We hesitated to even do this test, as the entire base of the pump is made from a brittle feeling plastic that even on the first impression didn't seem long for this world.