Originally Posted by paul tilley
leafield A6 &A10 have a range from 0.73 psi to 4.98psi with an upper limit of10.54psi for the A3 valve . it depends what pressure valve is fitted to your tube . we normally use orange spring 3.25psi relief pressure
There you go, the dangers of a quick google. Thanks Paul for the clarification. So can we come up with a rule of thumb? My effort... (a bit of care but no responsibility)
- codders knee test if you've got no equipment (pump it up until you can't make a dint in the tube) or
- a pressure gauge set to something your tube manufacturer recommends, or 1.5 to follow the Tilley guideline or between, say 2-2.5 if no other information or
-a pressure gauge set to 2-5 - 3.5 if you like it hard or a mate advised otherwise and
-a hand on your tube while you sort it all out
That should cover the bases!