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Author Topic: Back inflated BC  (Read 8175 times)

Timo

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Back inflated BC
« on: 20 May 10, 12:38 »
Looking to upgrade my BC to a back-inflated one. I've heard that back inflated BC's have the tendecy to keep your face down at the surface. Anyone here have experience to share with back inflated bc. Thanks.

diver-hloc

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Re: Back inflated BC
« Reply #1 on: 20 May 10, 18:28 »
I'm using a back-plate system.... with the float behind my back.

Personal.... I think Back Inflated BCDs are the best.... no more squeese around the wrist. And no... I've never had any experience of being 'force' face down. Just make sure the groin strap is secure to your wrist strip. This prevent the BCD from shifting upwards, unbalancing the wearer.

Dive Shop Oceanic have a good deal on back-plate system right now - http://www.oceanicasia.com.sg/ - under the name "FATHOM ONE". Check it out.

 

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Timo

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Re: Back inflated BC
« Reply #2 on: 25 May 10, 01:21 »
thanks, I'll check them out. if you use a backplate system, i heard that you will need less weight due to water displacement. what does this mean actually?

Alvin Ho

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Re: Back inflated BC
« Reply #3 on: 25 May 10, 06:16 »
thanks, I'll check them out. if you use a backplate system, i heard that you will need less weight due to water displacement. what does this mean actually?

You'll need less weight as the backplate is usually made of material such as stainless steel or aluminum.
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diver-hloc

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Re: Back inflated BC
« Reply #4 on: 25 May 10, 08:58 »
Highly suggest you get an Aluminum plate instead of a Steel plate.... just get 1 or 2 weight pouch and place them on the tank strap and add weight if needed.

Aluminium Plate = 1kg
Steel Plate = 3kg

That means your dive bag is 2kg lighter just by using an Aluminium plate.... and you are 2kg less likely to be overweight at the airport.  ;D
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Timo

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Re: Back inflated BC
« Reply #5 on: 26 May 10, 15:26 »
Highly suggest you get an Aluminum plate instead of a Steel plate.... just get 1 or 2 weight pouch and place them on the tank strap and add weight if needed.

Aluminium Plate = 1kg
Steel Plate = 3kg

That means your dive bag is 2kg lighter just by using an Aluminium plate.... and you are 2kg less likely to be overweight at the airport.  ;D

sorry I am a little confused ???
if I am getting a stainless steel backplate, which is heavier, I would need less weight than the aright?
or which plate type that let me carry less weight?

Timo

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Re: Back inflated BC
« Reply #6 on: 26 May 10, 15:28 »
thanks, I'll check them out. if you use a backplate system, i heard that you will need less weight due to water displacement. what does this mean actually?

You'll need less weight as the backplate is usually made of material such as stainless steel or aluminum.

Does this mean a backplate system is heavier than the jacket bcd?

Alvin Ho

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Re: Back inflated BC
« Reply #7 on: 27 May 10, 01:46 »
thanks, I'll check them out. if you use a backplate system, i heard that you will need less weight due to water displacement. what does this mean actually?

You'll need less weight as the backplate is usually made of material such as stainless steel or aluminum.

Does this mean a backplate system is heavier than the jacket bcd?

Depends on what type of backplate. stainless steel and aluminum ones are likely to be heavier. plastic/delrin types maybe not. also depends on what kind of jacket bcd as well. some with integrated weights and lots of padding material may weigh more than a basic jacket bcd.
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diver-hloc

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Re: Back inflated BC
« Reply #8 on: 27 May 10, 09:14 »
sorry I am a little confused ???
if I am getting a stainless steel backplate, which is heavier, I would need less weight than the aright?
or which plate type that let me carry less weight?



To answer your question....

Example
* If you need 3kg of weight for scuba... and you are using a Steel plate (3kg).... you can dive without using extra weight. But if you are using an Aluminium plate (1kg), you still need to carry extra 2kg on you to dive. Either on a weightbelt or carried on your BCD.

The issue here is when you travel by AIR.... extra weight is extra weight, and every extra Kg counts when you fly  :'( . Using a Steel plate meant you are adding 3kg to your gear bag..... using Aluminium plate meant you are only adding 1kg. And lets not forget you have to carry your bags around... even if your bags have wheels.

If you have a strong back or big wallet/bank account.... then of course no problem lah  ;D
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diver-hloc

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Re: Back inflated BC
« Reply #9 on: 27 May 10, 09:17 »
Does this mean a backplate system is heavier than the jacket bcd?


Most time.... but some jacket back inflated BCD has a hard plastic back that could weight as much as an Aluminium plated BCD.
Two things have altered not
Since first the World began
The beauty of the wild green earth
And the bravery of Man