Posted for "richard  titsworth" <rtitsworth@mindspring.com>:

 Skip,
 
 Did you see my questions to JohnS - I'm interested in your approach/strategy
 for filling the bottle...
 
 Do you:
 a) always refill it (every use)
 b) generally refill it when 1/2 used
 c) check/fill it depending on each flight/mission needs
 d) all of the above
 e) other
 
 How large is your bottle?  I also currently use a MH pulse oximeter on my
 portable system - very nice - but I don't use O2 very often however so I
 don't really have a "strategy".
 
 How/where do you get your bottle filled?  Does you local FBO have O2?  Do
 you have your own large cylinder and a transfer setup?  Does the bottle come
 out - so you can have it filled at a local medical supply site???
 
 
 
 In your pix, what is the 2nd white bottle - Fire Ext?  If so, where does it
 go Cabin, FirewallFwd, Both?  How is it plumbed alum tubing, hose, ???  How
 is it triggered - Panel? Cable?  Electric/servo?  What type - Halon?  Where
 did you get it?  Any recommendations?
 
 Rick