Can anyone see any issues including the weight of bailout and deco cylinders as part of overall weighting requirement? I get the need to not include removable equipment as part of basic weighting, so, if I don't plan to ever remove the cylinders underwater, is the any reason why they can't become part of my basic weighting? Clearly I'd need to allow for their buoyancy on minimum gas and buoyancy according to gas type eg 50% being more neg than a mix etc.
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Thread: Weighting Query
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13-01-2013, 12:45 PM #1Purine hurts my feet
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Weighting Query
GaryL
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13-01-2013, 12:48 PM #2Charlie
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what about when you need to hand off the cylinders?
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13-01-2013, 12:50 PM #3Moderator
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If you dive the team bailout/support strategy, Charlie's point is valid. Even more important is that if you are handing off that stage, it could be anywhere upto 3kg if you are handing off an AL80 of 50% or 80% (nitrox rather than Trimix).
RegardsGareth
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13-01-2013, 01:40 PM #4Purine hurts my feet
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Rtfq
The bit where I said if I plan not to hand them off...
Last edited by Major Clanger; 13-01-2013 at 01:44 PM.
GaryL
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13-01-2013, 01:45 PM #5Established TDF Member
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Weighting Query
So your bail of 15/50 is all used up and has gone positively buoyant. What do you do? Bag it off... but you can't do that because it started a couple of kg's negative and is part of your weighting......
Stages shouldn't be part of the weighting.
BRebreathers are like women; they pretend to love you, whilst taking all your money and trying to kill you.
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13-01-2013, 01:45 PM #6Closed Account: User Requested
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You need to consider the effect of breathing them down. Ali80s are slightly positive once breathed empty, even with a regulator fitted. I've sent on up an SMB line before, which is essentially the same as not having one, so do the maths
[EDIT] Baz got there first!
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13-01-2013, 01:46 PM #7Purine hurts my feet
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And if your bail was in a steel cylinder...
Originally Posted by Barrygoss
GaryL
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13-01-2013, 01:47 PM #8Closed Account: User Requested
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You'd still lose the weight of the gas, which would be the same. Originally Posted by Major Clanger
This is basic stuff.
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13-01-2013, 01:49 PM #9Established TDF Member
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Weighting Query
What size? What gas? I'll run the maths to find out just what the swing will be Originally Posted by Major Clanger
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Rebreathers are like women; they pretend to love you, whilst taking all your money and trying to kill you.
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13-01-2013, 01:52 PM #10Purine hurts my feet
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Nick I did acknowledge in the OP allowance for minimum gas in the cylinder. Originally Posted by nickb
If I use a steel cylinder for bailout and I've based weighting to include its buoyancy when empty I don't see any reason not to include it which is why I've asked if I missed anything else. Please assume I know the obvious
GaryL
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