Originally Posted by
MinnMan
I've gone the other way - no more inflator. Maybe the CO2 inflator never fails for you, but I had a few mishaps - usually associated with freezing and breaking the tube or losing a lot of the CO2 with an incomplete seal to the valve. Maybe I'm an oaf, but I'm an honest oaf. I carry a Topeak minimorph pump in my jersey pocket. It takes a little longer, but it weighs no more, and it never fails.
I prefer the PDW Shiny Object (
Robot Check) for exactly that reason. Inflation is done via a controllable valve, so you can inflate slowly. This allows you to check the basic stuff without using a ton of CO2. The valve seals quite tightly, just make sure its closed before screwing on a cartridge. I left a used cartridge in my saddle bag with the valve closed, two months later it still had pressure.
The screw valve is worthless for seating tubeless tires though. Its difficult to get the sudden burst of air required to seat the bead.