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@GA2G
Some technical info to add to my previous posts on the Specialized Windpipe.
Yesterday, I timed how long it took to pump through different pressures, on 2 different 700x23 Armadillo All Conditions.
40psi-60psi Low Pressure Setting: 1 minute
60psi-110psi High Pressure Setting: 4 minutes
110-120psi High Pressure Setting: 1 minute
110-125psi High Pressure Setting: 3 minutes
I pumped 2 tyres (front and rear), and thought I might time myself, and share.
I used a quick but steady action, but not what I would consider a fast action.
60psi on Low Pressure Setting, is where strong resistance is begun to be felt.
All psi's to 125psi, on High Pressure Setting, feel less than 40psi on the Low Pressure Setting,
ie. very easy indeed.
My previous posts regarding the WindPipe:
http://www.londonfgss.com/post568366-79.html
http://www.londonfgss.com/post769739-101.html