Author Topic: Would you have this emergency torch?  (Read 809 times)

Online paul

  • Global Moderator
  • forum hero
  • *****
  • Posts: 4757
  • Orpheus CC, NPC
    • Orpheus Caving Club
Re: Would you have this emergency torch?
« Reply #25 on: September 08, 2021, 06:03:34 pm »
I would hope you wouldn't have to wait for more than a few hours for rescuers to arrive in the UK, much less a week!

Having a back-up source of light which would last long enough while awaiting rescue and would also be bright enough to use to safely exit the cave if you simply suffered a light failure would be far more useful. There are plenty examples of such a light already available.
I'm not a complete idiot: some parts are missing!

Offline Caver747

  • Newbie
  • *
  • Posts: 7
Re: Would you have this emergency torch?
« Reply #26 on: September 08, 2021, 06:07:16 pm »



The Lithium Thionyl Chloride are OK as well, BUT they need a constant current draw (order of 3-6uA) on them or otherwise they will start to passivate. The passivation is not a problem if they draw current on a regular basis, but if left for months they can stop being able to delivery rated current and voltage.

Thanks for the info. Once I had a Gamma Scout radiation detector and it used Lithium Thionyl Chloride and there was no On/Off switch, it was always on. Now I know why. (At least one of the reasons). I'm also using lithium 1.5v in my multimeter, already for many years, no issues yet. An other bonus is, that apparently those don't leak.

Offline Caver747

  • Newbie
  • *
  • Posts: 7
Re: Would you have this emergency torch?
« Reply #27 on: September 08, 2021, 06:10:22 pm »
I would hope you wouldn't have to wait for more than a few hours for rescuers to arrive in the UK, much less a week!

Having a back-up source of light which would last long enough while awaiting rescue and would also be bright enough to use to safely exit the cave if you simply suffered a light failure would be far more useful. There are plenty examples of such a light already available.

That's right. Thanks.

Offline Paul Marvin

  • forum star
  • ****
  • Posts: 677
  • Bronze, Silver & Gold Swimming Certificates, WGAS
Re: Would you have this emergency torch?
« Reply #28 on: September 09, 2021, 04:05:14 pm »
We like the  Underwater Kinetics Mini Q40 small and fully waterproof and take 4 x AA,s so you can get some batteries anywhere when out and about. :thumbsup:
I dont know where I am going, but will know where I am when I get there.

Online Tomferry

  • obsessive maniac
  • ***
  • Posts: 450
Re: Would you have this emergency torch?
« Reply #29 on: September 09, 2021, 04:23:18 pm »
We like the  Underwater Kinetics Mini Q40 small and fully waterproof and take 4 x AA,s so you can get some batteries anywhere when out and about. :thumbsup:

For the prices of your torches I must say I was very impressed  ,the two bare feet sock recommendation was very helpful  :thumbsup:

Offline Paul Marvin

  • forum star
  • ****
  • Posts: 677
  • Bronze, Silver & Gold Swimming Certificates, WGAS
Re: Would you have this emergency torch?
« Reply #30 on: September 09, 2021, 04:47:28 pm »
We like the  Underwater Kinetics Mini Q40 small and fully waterproof and take 4 x AA,s so you can get some batteries anywhere when out and about. :thumbsup:

For the prices of your torches I must say I was very impressed  ,the two bare feet sock recommendation was very helpful  :thumbsup:

Those wet socks are simply the best we have ever had so warm and comfy   :bounce:
I dont know where I am going, but will know where I am when I get there.

 

Main Menu

Forum Home Help Search
SimplePortal 2.3.5 © 2008-2012, SimplePortal