ali cylinders

[siltmonkey]

Hi

I've not used an ali cylinder before and I've found out that my liveaboard, sea serpent, has them.

I understand they are buoyant at the end of a dive. Will a standard steel backplate offset the buoyancy?

What have you done? Has anyone plumped for the 15l steel option for an extra fee?

Thanks. 2 weeks to go!

:-)

r

[Fiona]

If your wing / BC (whatever) only has one camband then the bottom of the cylinder does tend to lift.

I tend to strap a lump of lead to the cylinder near the bottom.

Never bovvered with a 15 steel, who needs that much air

[Owenter]

Yep, the Ali cylinders they use in the Red Sea are 11.2 or thereabouts. With about 50 bar in they'll float, albeit valve down.

You'll need to think about that when you sort out your weighting.

If you need the air then opt for the 15l, if not then stick with the ali.

[SimonK]

I assume you will be using a wet suit instead your normal drysuit so you will have to change your normal weights anyway, about 4 - 5 kg should do it.

- the cylinder material is irrelevant, its mass stays the same throughout the dive, all that happens is that you loose 2.4kg of air, exactly the same as you would with a steel cylinder -

[siltmonkey]

thanks guys n gals


:-)

r