Zipp disc valve hole - how to make it bigger??

[danfoz]

Originally Posted by cycledogg1 .

So, as of now, I have to wiggle the pump head (which is by Silica specific for disc wheels) onto the valve and when finished pumping the air into the tubular, I have to wrestle the pump head off. When doing so I loose air and then not sure of the psi.

You could also invest in a Hirame valve chuck which can be fitted to any pump - I currently have one sitting on a Blackburn. It requires a ridiculously small amount of valve to grab onto and no pressure is lost on release.

http://www.jitensha.com/eng/hiramepumphds.html