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DIR Kit set up - the fundamentals Want some advice on how to set up your basic kit in a DIR compliant manner, questions about harnesses, stage rigging, etc. ask away.

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Old March 19th, 2007, 05:01 PM   #1 (permalink)
dennydiving(Offline)
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GAS planning for weekends

Dear All

Having now signed up for fundies and eventually aiming to go onto tech 1 then GAS is likely to become an even bigger expense. At present I am IANTD Trimix and probably doing 12-15 trimix dives a year- rest on Nitrox mostly in the 25-30m range. I would like to move onto deeper diving but only with like mined people. Having done depper dives with people on air and people on rebreathers then I would be much more comfortable in a team. Whilst the air people were experienced I will not dive to these depth on air. I don't know enough about rebreathers to form an opinion but in order to be safe would require considerable training -hence they are not on my list,I would rather have other divers on a set up identical to mine. I did IANTD trimix with 2 rebreather divers in Dorothea and felt very lonely!!

Whilst I am happy with my training things could be better - hence going DIR.

How do you currently find the gas logistics and costs for a typical weekend. I am assuming standard gases 21/35 and 2 trimix dives over a typical weekend. Diving Weymouth and Plymouth I would of thought was fine but what about locations further afield?

Is it worth having 2 twinsets - one for Nitrox and one for mix so that you can do two dives a day. Must admit that this seems like the best plan, seperate sets for each respective gas- but is this overkill???

Thanks


Ian

Last edited by dennydiving; March 20th, 2007 at 12:56 PM.
 
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Old March 19th, 2007, 05:09 PM   #2 (permalink)
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Quote: (Originally Posted by dennydiving)View Post
Dear All

Having now signed up for fundies and eventually aiming to go onto tech 1 then GAS is likely to become an even bigger expense. At present I am IANTD Trimix and probably doing 12-15 trimix dives a year- rest on Nitrox mostly in the 25-30m range. I would like to move onto deeper diving but only with like mined people. Having done depper dives with people on air and people on rebreathers then I would be much more comfortable in a team. Whilst the air people were experienced I will not dive to these depth on air. Rebreathers just aren't safe and although a bail out bottle is carried I would rather have other divers on a set up identical to mine. I did IANTD trimix with 2 rebreather divers in Dorothea and felt very lonely!!

Whilst I am happy with my training things could be better - hence going DIR.

How do you currently find the gas logistics and costs for a typical weekend. I am assuming standard gases 21/35 and 2 trimix dives over a typical weekend. Diving Weymouth and Plymouth I would of thought was fine but what about locations further afield?

Is it worth having 2 twinsets - one for Nitrox and one for mix so that you can do two dives a day. Must admit that this seems like the best plan, seperate sets for each respective gas- but is this overkill???
Hi Ian,

For most of my Mix diving in the UK, I'm normally only doing 1 dive per day, so only need the 1 twinset. However if I know I am doing a weekend somewhere with limited gas logistics, I'll take 2 sets, or a bottom stage and 1 twinset. Depends on the dives really. Tech1 range dives, then 2 sets of twins, and 2 50% bottles is easy.

Currently I own 2 sets of 12s, but I suspect that will go up over the next year, as I pretty much always have mix in at least 1 of those sets, and in the summer tend to have mix in both, so still need a set to use on courses, and shallow dives.

Don't know if that helped at all.

Thanks
John
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Old March 19th, 2007, 05:09 PM   #3 (permalink)
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Quote: (Originally Posted by dennydiving)View Post
. Rebreathers just aren't safe and although a bail out bottle is carried I would rather have other divers on a set up identical to mine. I did IANTD trimix with 2 rebreather divers in Dorothea and felt very lonely!!

Ian
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Old March 19th, 2007, 05:19 PM   #4 (permalink)
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Gas Planning

Thanks John

I think that the two set option is probably the route I would go.

Fiona

personal opinion- I am sure that rebreathers are perfectly safe if you have been trained and dive with like mined people. Having used up my 9 lives I know that they are not for me

ian

 
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Old March 20th, 2007, 12:33 AM   #5 (permalink)
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Rebreathers just aren't safe
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Yawn... another diver with no experience passing judgement on something he knows nothing about...
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Old March 20th, 2007, 09:44 AM   #6 (permalink)
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Gas planning

Quote: (Originally Posted by lizardland)View Post
Yawn... another diver with no experience passing judgement on something he knows nothing about...
Thanks I have plenty of experience - (diving 22 years) and enough knowledge to know that rebreather's are not a route that I wish to go down. Whilst a rebreather would offer an advantage on logistics and gas costs- it is my preference not to go down that route having spent time discussing this with existing users and with qualified rebreather instructors.
Sometimes it would be nice if instead of making a snap judgement about someones level of experience and interest in a subject that people come back with helpful responses and not the standard "oh they know nothing about this topic or that subject".

ian
 
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Old March 20th, 2007, 10:41 AM   #7 (permalink)
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And how many on rebreathers? Enough to make such a definitive statement on their safety?
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Old March 20th, 2007, 10:44 AM   #8 (permalink)
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Ian, sorry but you did say "Rebreathers just aren't safe" that is completely different to you not wanting to go down the RB route.

I don't want to go down the RB route but I have no issues with them and the people that use them, I have buddied with RB divers and have never had any issues with it.

Anyway lets move on. I am not trimix qualified although the trimix route is something I would eventually like to move on to, not for deeper dives but continue with my current dives of less than 40-45m but remembering what I saw when I was down there.

I do have two sets of 12's as like you I think it takes the gas issues out of a weekends diving.
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Old March 20th, 2007, 10:52 AM   #9 (permalink)
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Gas planning

Agreed

Lets move on, two sets seems to be the way to go.

Thanks all

ian
 
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