Ive used three pumps in the last two weeks-1 WM foot pump, one WM Schwinn, one Pedros, and my current one today a Blackburn AirTower1.
I returned the Pedro's because the gauge would settle in at 40 right when hooking up, and then barely move-testing the tire with a hand gauge would then net 65-75+ lbs. The LBS staff verified this today on three of their bikes at the shop-then gave me a Blackburn at a discount for my trouble. The footpump, a 9.00 walmart thing, is the ONLY one of all these that registers my 60lb tires right after hooking it up.
The WM Schwinn wouldn't pump past 50. The foot pump wont pump past 60.
The Blackburn settles in at around 40ish right when hooking up and then after a pump goes up to around 60 or whereever the tires beginning pressure is. I test the tire with my hand gauge before I hook up the pump and it reads about 60. The LBS guys used my hand gauge today too-so its about as accurate as one can expect.
What do I have to do to get a pump that reads what the pressure is BEFORE I start pumping air with it?