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All >>As I recall, JJ's method for securing the long hose second stage >>involved a tank O-ring and a zip-tie. The tank O-ring is looped >>round the hose in a "figure 8", and then zip-tied to the clip. This >>gives it a little "stretch", while still allowing it to be broken >>free with a good tug. Is that what you are thinking of? Alternatively... Unscrew the pressure gauge from the first stage and fold an O-ring through the eye of the swivel bolt snap. In doing this you have created two loops of O-ring. Pass the pressure gauge hose through the two O-ring loops and slide down to the end of the hose near the gauge. Reconnect hose to first stage. Voila. A breakaway without the use of a zip tie. This should also keep Jim Cobb happy as he rightly hates zip ties! BTW, the section of the O-ring needs to be appropriate to break with the right amount of force, but not flimsy enough to break when not desired. I found a neck O-ring to be too strong and bought some thinner O-rings of 1/16" section but the same diameter (sorry, I can't recall the reference for these). Note that this method can be used to secure break away regulator clips also. John Grogan put out an email a while ago about this, I am merely plagiarising. David Shimell Project Manager, Sequent Computer Systems Ltd., Sandton, South Africa. Email: shimell@se*.co* <mailto:shimell@se*.co*> -----Original Message----- From: John Brett [SMTP:John.Brett@pi*.co*] Sent: Thursday, February 25, 1999 9:36 AM To: techdiver@aquanaut.com Subject: RE: Break-away for pressure gauge? > There was something on the list a while back that JJ had devised a way to > rig the pressure gauge bolt snap so it could be broken free if needed? A guy I know has just come back from training with JJ: >>Apparently, JJ was in a >>situation where he couldn't get his gauge unclipped and couldn't cut it - >>hence the switch >As I recall, JJ's method for securing the long hose second stage >involved a tank O-ring and a zip-tie. The tank O-ring is looped >round the hose in a "figure 8", and then zip-tied to the clip. This >gives it a little "stretch", while still allowing it to be broken >free with a good tug. Is that what you are thinking of? The same applies to the SPG. <snip> >The same method could certainly be used for the SPG, but I'm not sure >it's necessary. Under what circumstances would you want an SPG to >"break away"? There's a brief section in the DIR II tape where G talks about breakaway vs non-breakaway gear. The long hose and SPG come under the breakaway category as having the boltsnap break off isn't a disaster (a pain, maybe), and there are cases in which you may need to get the hose quickly. John Brett -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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