Mailing List Archive Mailing List Archive
The difference between a loop at the top of the bottle or at the bottom of the cord is due to whether or not the valve is a Sherwood DIN or other valve - the tie at the top ( most of my bottles ) is due to the loop with the clip tied in NOT fitting over the Sherwood valve, my other bottles have it either way. The top tie also allows fine tuning of the position of the upper clip. This is not an issue by itself since the correct answer is to properly position the clip. Where it could be an issue is if you travel with your rigs but not your stages - then you should use my upper tie method so your rigs work with ANY local bottles. This was the genesis of that - I go to Mexico a lot. On the "ft" bullshit, there is no confusing meters with feet for the standard correct deco depths and gases, so that is patently ansurd, and we do not mark the mix on the bottles - also patently absurb and a violation of the whole system to start with. Why not just call Tom Mouth and plaster the bottles with IANTD stickers if you are going to do that? You can not get around the logic of the system, and when you start adding other things, you are asking for confusion, trouble and mutations that will end up killing somebody. Try this : put a rubber innertube reg holder over a 20 ft bottle with "ft" or feet on it and read it backwards - could it be 120 or 20? How much crap do you want on your bottles - I want the depth and my name - nothing else. Leave the system alone - I know what I am doing , been doing it a long time with a lot of divers and nobody has breathed the wrong gas yet. It is impossible with our system if it is followed ( unaltered) from start to finish. Jim, get a copy of the DIR II tape and look at it - every bit of this is explained in detail. Show that to the "vbstroke" list and end the arguement that way. Jim Cobb wrote: > > Hi, George. Rumor has it that I am accused of "messing with your system" > insofar as wether to use FT or not to use FT on stage bottles. We had a > VBTech meeting where we discussed the DIR stage bottle rigging technique. > It was agreed that it was an elegant system and superior to the > "cockring" system and metal-to-metal connections. It was also agreed that > steel stages are a very bad idea. We did notice some inconsistencies with > how to DIR rig. The schematic layout shows a loop of cord around the > stage neck but on the DIR II tape a knot is used at the neck of the > stage. So I guess there is some leeway as to how you set up a DIR stage, > or is this some evolving of the system? > > So on the FT thing, we are not always able to dive on "stroke free" > charters, sometimes breakinng RULE #1 is part of the game. So we agreed > (thats "we" not "me") that it would be a good idea to add FT for 2 > reasons: > > 1. Make it absolutely clear that the number indicates MOD and not MIX. > 2. And that we are talking FEET and not METERS (Yes, we get lots of > European divers). > > I really could not come up with a reason not to use FT, hell it's just a > couple of letters and does not effect streamlining. > > Another thing that I like about the DIR stage is that the cord makes a > nice carry handle for the smaller stages even though it is specified that > they not be used for surface carry. I use a stronger cord so that you can > use it as a handle, again because I could not come up with a reason not > to. > > So, don't mean to mess with your system, certainly the absence of > cockrings and steel is a major improvement. We Mid-Atlantic divers like > to be up to speed on new developments unlike quite a few of our Northern > brothers. > > Jim > > ------------------------------------------------------------------- > Learn About Trimix at http://www.cisatlantic.com/trimix/trimix.html -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]