BP/W vs back-inflate BCs

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vjongene

Contributor
Messages
392
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Location
Rolle, Switzerland
# of dives
1000 - 2499
I am in the process of buying a new BC, and pondering the relative advantages of BCs without a backplate but with a back-mounted bladder, and a "real" BP/W setup. So far, I have to admit that the back-inflatable BCs seem to make more sense, given my requirements, but I am willing to listen to contrary opinions.

Here are a few pieces of relevant information:
- I regularly dive in a cold freshwater lake. I wear a two-piece 7 mm wet suit in summer, and a dry suit in winter. I need about 15 lb of weight with the wet suit, and 22 lb with the dry suit. I dive with a single 15l steel tank, occasionally a 12l.
- At least twice a year, I go diving in a tropical location and bring my gear with me. I do not want anything too bulky or heavy in my bag. Diving salt water in a 3 mm suit and with an AL80 I need about 14 lb of weight.
- I have no intention to move to doubles in the foreseeable future, or to carry side-mounted stage bottles.
- Given my type of diving, I do not think I need more than 30 lb of lift.
- For my last 200 dives or so, I have been using a Scubapro Master Jacket, ca 1990 vintage, with an internal harness and an independent jacket-style bladder. It fits like an old shoe, but it forces me to put all of my lead on a belt, it doesn't provide an ideal trim, and it is rather bulky.

And this is what I would like to achieve:
- Dive a more streamlined configuration, with lower drag in the water.
- Move some of my weight (about 10 lb) to the rig, in a form that I do not have to pack when I travel.
- Achieve a better trim (weight distribution) overall.

I bought a Mares Morphos Twin BC a couple of months ago, hoping to acheive these goals. I dove it only about half a dozen times, and it disappeared during our recent trip to the Marshalls, but anyway I was not entirely happy with it (shoulder straps too far apart, D-rings difficult to reach, performance of the Airtrim system, etc). However, I really liked the feel of the bladder on my back, and I want to stick with a back-inflated BC.

Given all of the above, I see three possible paths I could take:
1) Find another back-inflated BC with non-ditchable weight pockets in the back. I am thinking about the Zeagle Ranger or Brigade, ot the Tusa BCJ-5900 (the latter highly recommended by a local diver).
2) Get a harness and wing without a BP, along the lines of a Dive Rite TransPac or an OxyCheq O-Pac, and add weight pockets to the cam bands.
3) Get a BP/W setup with a stainless steel BP. In this case, I would probably also need a lightweight BP for when I travel.

The cost for options 1 or 2 would be around $450 (plus shipping, VAT and customs). The cost for option 3, if two backplates are required, would be substantially more (at least $600 AFAICT). Also, option 3 would require that I re-thread the harness from one BP to another every time I leave for a trip and every time I come back. Additionally, option 1 would provide me with some pockets on the BC where I could store things like deco tables, an SMB, a digital camera, etc. So all in all, this is where I am leaning.

Given the overall enthousiasm on SB for BP/W configurations, I expect that some members will have good arguments why I should choose option 3 (or others that I may not have thought about). Opinions welcome!

Victor J.
 
I'll catch some grief from some folks I know, but in your situation one of the pseudo-tek back-inflate BCDs should be just fine.

Harness systems like the ScubaPro S-Tek and the Dive Rite TransPac are probably the best way to go - you'll be able to swap the wing and a few of the other components should you ever decide that you need to.
 
rr...for the most part i agree with you....but i looked hard at a tp2 and decided on the transplate instead....but with the deluxe harness....

you can get a good deal on those...www.northeastscubasupply.com
 
BTW, I believe most people that have 2 plates have one SS (cold water) and one AL (tropical), and each plate has it's own harness (additional cost, I know, but worth it rather than rethreading plates over and over again).
 
I have used the Tusa BCJ 4900 in the past and thought it made a great travel BC as it was compact and well made if not overly durable. I suspect the newer 5900 would be the same way.

I have also used a Genesis Recon both with and with out a backplate and I liked it as well. It was extremely comfortable and stable with or without the stainless backplate, was very adjustable and is the heaviest and most durable BC I have ever owned. But it is not very compact and is a little weighty for a travel BC.

The current configuration is an OMS aluminum backplate and a deluxe "comfort harness" (harness with pivot rings, a quick release on the shoulder and a chest strap with added neoprene shoulder pads). It is light weight, streamlined, stable, very versatile, and packs in a small volume. It can accomodate singles or doubles easily and can accomodate me in anything from a dry suit with heavy underwear to a 3mm shorty without having to re-adjust the shoulder straps (the chest strap takes up the slack).

I also used Dive-Rite weight pouches. They mount close the the backplate were the waist and shoulder straps meet and prevent you from turning face forward. They are easy to load and unload and will acomodate standard weights available anywhere. They are also ditchable, unlike weights/weight pockets attached to the cam bands, and are also a lot more streamlined and less prone to snagging something than cam band/tank mounted weights.

So for the diving requirements you are describing, the versatility of a BP/wing offers a lot, particularly if you go with an AL plate (for lighter travel weight) and a well designed set of weight pouches.

I personally am not a transpac or IQ pack fan. They offer less stability than a backplate/harness and offer little or no comfort advantage over a backplate with a deluxe harness. If you really want the same harness as an IQ pack, get the transplate instread.
 
Take a look at the SeaQuest Balance, the TP2 is a good idea, or the Zeagle Ranger. Also don't rule out a BP/Wing combo with an aluminum BP. That would give you the "lightweight" packing capability (as well as smallness given the lack of pockets, etc.) and you can configure it how you want for the dive at hand (it's a more flexible system).
Me? I dive a SeaQuest Balance. Basically for all the reasons you cited. I just didn't want to be prejudiced against a BP/Wing setup, and I am seriously considering buying one for future technical and cave diving. But for Rec diving - nothing could take the place of my Balance for overall features.
 
If you're considering a BP/W setup and only plan to dive with a single tank, check out the Jet harness (www.jetharness.com). You can pick up a complete setup (including aircell) for $359...which is certainly less expensive than some of the other BP/W rigs. There is another thread discussing this setup, and it sounded like people were quite pleased with its comfort and stability...I hope so as I have one on order. I selected the SS backplate so I could remove 6# from my weightbelt while still not posing a significant travel packing problem.

Sean
 
If you go with the BP&W setup for cold water, you will never want to dive with any other configuration for warm water. You will find you will want an AL BP.
 
Why is it that a BP/W combo is so expensive when it's such a simple system?
 
Seabear70:
Why is it that a BP/W combo is so expensive when it's such a simple system?
The basic laws of supply and demand.
 

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