My version of "air down valves"
I know it's kind of done to death but here are mine
I know that I am starting with 30 pounds so after a little trial and error I know that 1 Min & 25 Sec will drop it down to 15 pounds. so I put the first one on and start my stop watch, 15 seconds later I put the next one on, 15 seconds later the third and so on. At 1 min 25 sec I pull the first off, at 1 min 40sec the second and so on.



