Types of BC's

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

rstofer:
I personally won't buy a BC or back-inflate that doesn't have two tank bands. Having a tank slip at depth is just a problem I don't want to consider (again).

Maybe the problem isn't the number of bands, but the design? The bands on most BCs are very poorly designed and do not hold well.

=rstofer:
Maybe that's the reason so many folks just recommend the BP/W from the start. There is no cummerbund, there is a waist belt but it doesn't need to be constricting. There is nothing across your chest. A crotch strap is helpful but optional.

I've seen all of those in BP/wing. I've also seen vests without them. It's not the style, but the design that matters. My vest does have a chest strap, but I've never used it.
 
I never said critical - I just find it comfortable.

That's a fair point. In what way do you find in contributes to your comfort?

I would assume (in general) that if a chest strap was necessary for comfort, then it would point towards a poorly engineered bcd harness with bad ergonomics.

The use of a chest strap originates from rucksack design, where it has proven benefits with load carrying ergonomics. Other than when walking to a dive entry point, your BCD is not a load carrying device.

Then I'd suggest you not use one.

Damn right! :D Even 'back in the day' when I used BCDs, the first thing I woud do was hack these off the rig.

I have a particular dislike for chest straps, as I found they significantly interfered with my access to my drysuit chest inflate...and this contributed some added stress to a severe free-flow emergency I had on deep dive once....

That's good to know, but my system has a few more and I don't find it an issue. My system can easily handle multiple stages, several back-up lights and whatever else one might decide to clip on.

a few? ;)

My point is that you can achieve the same with 3 or 4 d-rings.

I use 4 d-rings on my system (2 chest and 2 hip). On these I conveniently store 2 decompression stages, 2 back-up lights, penetration reel, jump reel/s. I can also clip off my long-hose reg and umbilical torch head.

For the benefit of the OP, here's what you can do with 4 d-rings...

decompression_procedures.jpg



One man's gimmick is another's feature, right? I not knocking your suggestion, just letting the OP there are other good alternatives available.

Agreed. :D

I configure my equipment from a minimalist stance. Everything has one (or more) purpose/s. Nothing is superfluous.

The reasons I like this configuration are:

1. There is less to break or fail on or before a dive.
2. I am more streamlined, for increased finning efficency and to enable safer access to confined spaces when wreck diving.
3. There are less protrusions that can snag and entangles lines - a potentially lethal threat when wreck or cave diving.
4. My kit is lighter, meaning I save money on excess baggage every time I fly to a new dive destination.
5. My kit is less 'distracting', which lowers my task loading - especially in emergency situations where I may already be at the limit of my ability to cope.

My system does not trap air, streamline, versatile and can do everything a simple plate and hog harness can do, and more.


Agreed.... and I should clarify. There are many good or great configuration options available. I just believe that a minimalist BP/W approach is the optimum, not the only, choice.

BP/W does everything that any diver could ever ask of it...fills every niche...but does it with less. Less clutter, less expense, less stress, less weight.
 
BP/W does everything that any diver could ever ask of it...fills every niche...but does it with less. Less clutter, less expense, less stress, less weight.[/QUOTE]


Very nice said. I use a BP/W and would never go back to a jacket bc...I wished I tried it before...would have saved me the hassle to sell the bc I bought by mistake...;)
 
BP/W does everything that any diver could ever ask of it...fills every niche...but does it with less. Less clutter, less expense, less stress, less weight.

I'm not so sure about the 'less expense' part. Somewhere in this thread (or another nearby), someone posted a link to a $200 BC at LP. I just don't see getting a BP/W, even with an aluminum plate, for this kind of money. Even the HOG BP/W is right at $300 with an aluminum plate.

Heck, the DiveRite tank bands are about $77 per pair. A SS plate is anywhere between $80 and $150 and some are more. A decent wing is > $200. The Mach V wing cost me $270 and the HOG wing was $200.

The BP/W is not a price leader against cheap BCs. It will compare favorably to high end BCs like the Zeagle Ranger and the SP or AL offerings.

Richard
 
A type of BC not often mentioned is the horse collar. Still available, but used these days mostly by military divers. The horse collar is both a buoyancy compensator and a safety device; as it can be used after the tank and backpack are ditched.

The horsecollar was popular in the 1970's. At the end of that decade, the scuba industry recognized that they had perfected the BC and could not sell anything new unless they declared the horsecollar obsloete. Various approaches were tried including jackets, vests, wings, and belly bags. These developments, although usable, did not eclipse the horse collar in function or safety.

Only the horse collar is a real BC. All others are a tank holding device with an associated air bag.
 
I'm not so sure about the 'less expense' part. Somewhere in this thread (or another nearby), someone posted a link to a $200 BC at LP. I just don't see getting a BP/W, even with an aluminum plate, for this kind of money. Even the HOG BP/W is right at $300 with an aluminum plate.

You can construct a very cheap BP/W is you are prepared to shop around. Here is what I did....

Backplate. Ebay etc is great for these. No worries about their condition... a safe 'second hand' buy. If you are patient, you can could to get one for $50.

diveriteplate.jpg


Harness. Construct your own HOG harness. $10 for the webbing. $20 for the metalwork. Plenty of advice online on how to thread it together and size it.

Instructional video HERE
spaceball.gif

spaceball.gif

3750517477_4109915578.jpg

Wing. A quick search online will produce numerous options and special offers with suitable single-tank wings in the sub-$200 region. For instance, a Dive Rite Rec Wing is HERE for $159.

recwing.jpg

Total price for doing that would be $239. That's one hell of a set-up for a price that would buy you a very flimsy entry-level (rental spec) jacket BCD.
 
A type of BC not often mentioned is the horse collar......

Page 1 of the thread...:D

5. Horsecollar

Fairly antiquated design, with lightweight backplate (often plastic) and buoyancy cell/bladder that runs behind neck and down either side of the chest (more akin to a life-jacket). Still used by some Public Safety Divers.

PROS: lightweight, good surface support.

CONS: No pockets, more difficult to achieve good trim underwater.
 
My bp/w harness has 6 d rings I use maybe 3 if i need to, otherwise 2 is plenty. plus i got b/c it had a quick release, otherwise i would go with a hog harness and even that you could add more d rings. no more cummerbands is worth it.
 
Everone seems to quite like the bp/w system around here - what the diffrence beween a bp/w and a wing or are they one and the same?

Also DevonDiver mentioned additional training, i can understand that as they are very much different to the jacket style BCD i learned in and in fact am still using! So what would need to be done if i decide to go for a bp/w system
 
There isn't really much 'training' to be done when moving from jacket to BP/W - it works the same as any bcd.

However, many new users make the common mistake of setting the harness too tight, so as to restrict entry and exit from the rig.

Also, some tuition really helps to get the best out of it - trim, weighting etc.
 

Back
Top Bottom