Mverick once bubbled...
On the Dive Rite Travel wing. If you get a hole in it you loose all the air. If your pull dump sticks open you loose all the air. If your buttons stick you loose all the air. Because it's expandable. The halcyon isn't expandable for that reason.
Yeah, I actually thought about that... I haven't heard of such a thing before, so I was wondering if it was a valid worry or not... So it can happen, hunh? Hmmmm...
Next, on pull dumps. Yanking on your equipment doesn't give me a warm fuzzy. Your yanking on a pretty important hose. If you break the connector off. You're sinking. If you break the wire in the hose when you need it your going to the surface fast. I've seen it happen. I know you can just use your butons then. But I've seen people go all the way to the surface and at the surface still yanking on that hose. Train yourself to use the buttons and this wont happen. And when you ask why they didn't use the buttons they just shrug. Do that at depth and your in trouble. Also, if your buttons stick you can still control your bouyancy by moving the hose up and down to keep air in the wing. But not if you yank the hose off your wing.
Hmmmm... So that's why so many of you guys forgo the pull dump feature and instead attack the issue with a short hose... Shorten it to 6" or 9" or 12"... That way you are getting something that works better, simpler, and more conveinient than the freakin' two foot long hoses on most BC's, and yet not having to add the pull dump (with it's possible problems.) On the other hand, this means that if you shorten the hose that you can't really use an integrated octo (which you many of you experienced guys don't seem to like either... For this reason, maybe?)
Scratching your tanks is a non issue. I use the Halcyon with integrated STA and use the plastic bolts or zip ties. They ain't scratching nothin.
Okay, I suppose I can negate that issue by using plastic bolts instead of metal ones. And yes, I know they're just there for when you put the tank on... Not really an structual thing...
I also have a FredT 2piece sta that's line-X coated and have used it twice. Not that it's bad. I just like the tank closer to my back.
Yeah, I've heard that before too... So you like the integrated STA of the Halcyon stuff too, then?
And on the wear points on the wing. What do you thing you'll be bolting the STA to? The wing material. And to get a good snug fit you'll really want those babys tight. Which will put way more pressure on a smaller area then the whole tank putting pressure on a larger area.
Good point. I didn't think of that. That's why I asked you guys!
You do realize that the jacket-style BC (or for that matter, any back inflate too) has no wear points at all... No fabric being pinched by a STA or by the tank... No issue with a long hose as an inflator/deflator, and thus can use an integrated octo, and thus can get rid of the "octopus." And with the pull dump, deflation is easier and quicker. And of course, because the BC's are manufactured, heat treated, and vulcanized, the parts are less likely to pull out of the bladder than with a wing that's been glued on by hand. And with most manufactured bc's on the market, the tank is held onto a backplate (!) that's built into the fabric by a big shoe, distributing load evenly and not marring tanks, not making any wear points, and generally not causing damage.
I know, I know... BP/wing setup only... And I'm with you on that... And I'm not saying that jackets are better than bp/wings, or vice-vera. My point is that there are many issues here with these homemade units that manufactured units (that you guys regularly make fun of) don't have.
For these reasons, I can't seem to sell myself on EITHER design.
Oh, Halcyons design was well thought out. It was done so you had the option of putting bolts through wings for duals or to hold the wing onto the backplate if you were so inclined.
I know that sounds wonderful, but that's something that many BC's have... Scubapro's Nighthawk and Seaquest's Black Diamond (top of the line back inflate BC's) both not only accept either singles or doubles, but do it with a "shoe" that won't mar tanks and won't slip, even if the strap isn't "crusher" tight. SeaQuest's QD line and Scubapro's Classic (two top of the line jacket style BC's) have identical systems. And they do it in ABS plastic so that there's no corrosion issues and it does not contribute to a possible overweighting problem.
In other words, the top of the line BC's that are available out there now, in both back inflate and jacket styles, also accept singles or doubles... And do it simpler, with less possible damage or corrosion. In fact, most of the shoe-style tank holders are so effective at creating a non-slip surface for the tank to adhere to that only one strap is necessary for attachment.
And by the way, all four of the top of the line, manufactured BC's that I mentioned above all have backplates built right in for stability. They are not soft in design like the Transpac.
In fact, if I recall correctly, I believe that all of them will also accept a crotch strap if you like, although most find it unecessary due to the more "complete" fit of the BC instead of just a few straps.
Again, I know it sounds like I'm cheering the manufactured stuff along... But I'm not. I like what I've experienced so far on the lines of bp/wing setups and the Transpac (sorta a "cross" between). It's just that the points you guys seem to bring up about this stuff doesn't always seem to fit.
I feel almost like I'm arguing Mac vs. PC... And you know how complicated that can get!

Harley vs. Sportbike. Chocolate vs. vanilla.
One more thing, too... You said something about someone rising rapidly, not figuring out that their pull dump wasn't working, and refusing to dump via the inflator hose. To me, that doesn't sound like an issue with the equipment, that sounds like an issue with the brain of the person using the equipment. All of the manufactured BC's that I listed above have TWO pull dumps... One on the left shoulder at the top of the inflator hose, and then another on the right shoulder identical to the bottom dump... You know, with a cord on it. That, of course, is in addition to the regular old inflator hose pushbutton, like everyone is using. In other words, there's lots of options out there if something won't dump. At least, there is with these manufactured BC's. Not so with the bp/wing setups.
Oh... And as far as any of those valves failing in the open position, or a tear or rip appearing in your BC... Don't think that that couldn't happen to any BC, at any time. You could penetrate a wreck and tear a wing or a bladder or a BC just as easily, no matter who made the BC. I know you feel that "pulling" on something connected is really bad, but if that was such a big worry, why wouldn't we outlaw bottom dumps?
My point is that I don't believe that anyone is free and clear of the possibility of a bladder failure, no matter which system you are using, and I don't believe that the manufactured BC-wearer is any MORE at risk than the homemade BC-wearer.
But I will tell you this... It's because of this risk that manufacturers design their BC's to have ditchable weight... So that in the case of a bladder or buoyancy failure, a diver can once again gain buoyancy. And pull dump or not, if you have no ditchable weight then you're at risk. For that person, a bladder failure means that they're swimming to stay up, if it's even possible. And I don't see anyone but homebuilt BCD-users weighting themselves with no ditchable weight.
So pull dump or not, the risk is still there. And it can be managed using ditchable weight. No matter who you are and what rig you dive.
It's a modular design. That can be the best for any diving you do. You set it up with different wings or plates or tanks to match the diving your do.
Agreed. Versitility seems to be the key here. I'm all for it... The only difference I see between bp/wing setups and any other setup is that the webbing can be infinitely adjusted, whereas the manufactured units only have *some* adjustment. On the other hand, it could be argued that the manufactured units only have the adjustment that is necessary... Nobody needs an 8' long shoulder strap. The other adjustment that I can see is the wing size... Whereas most manufactured back inflate style BC's have a relatively large wing, it's not generally possible to get a smaller one. However, the jackets that I've been using seem to fit close to my body, and have the best of both worlds... Both tons of lift, and streamlining... Due to their close fit, yet having more inflatable surface area. BP/wing setups are completely customizable... But that could also be translated as, "everything's a compramise." The large wings are ungainly, and the small wings don't lift much. And of course, this can be an issue if you're an instructor who's helping to calm a panicked student at the surface.
Don't get me wrong. I'm not slamming you. Just stating reasons why I came to my conclusions. And why I dive my setup. I also have a Transpac ll and use it occasionally. But not very often anymore. I like the minimal approach of the backplate much better.
Oh, I'm taking no offense whatsoever. I'm very interested in your opinion. I asked for it, and I am not trying to argue you out of it. I sincerely want to understand each and every person's point of view, because I want to use other's experiences and knowlege to help offset some of my newness. Keep in mind I've only got 21 dives under my belt (well, the certified ones, anyway!)
Likewise, if my points seem silly or stupid to you, I ask that you please understand... It's just my opinion, and that's subject to change anyway. Probably will as I get more dives! But I still have these nagging points that don't seem to go away.
Imagine this: One day you decide to begin racing powerboats... And you are considering buying one. You contemplate size, engine displacement, where you're racing, hull design, and even the color of the boat. You get a pretty good idea, based on available data and lots of racing, of what you want. Then you come across a bunch of people who race sailboats. Let's say these are really experienced, professional people who race for the America's Cup... And they all talk about how "fast" their boats are.
Now here you are in this social situation with a bunch of people who you really could grow to like very much, who all have lots of experience and some of which are very much race-winners. Almost all of them all have years of experience, and some of them have the trophies to prove it.
So when you ask some of the more friendly ones, "Hey, why do you like this sport," and they reply, "Because of the feeling of SPEED across the water," you'd be wondering, "WTF??" I mean, your little 19 foot runabout is way faster and requires less maintenance and heck, you can even go in it alone. To you, "boating" or even "racing" is as far away as getting in the boat and going for a drive... These sailing guys leave sometimes for weeks at a shot because they just don't get "the feeling" unless they're offshore.
And when you hear a couple of these guys making fun of powerboaters, who they can't stand because of "all of the gadgets on their boats" and all of the "uncessessary equipment" on their smoking hulks... Well, that'd be just a bit confusing, wouldn't you say? Especially when you plainly see, every time you pass one, a "dangly mini-engine" on the back of their sailboat (not unlike the lift bags and spools and hanging weights and pockets and wires for lights, etc. that hangs from y'all's rigs that you claim to be so streamlined).
In that situation, I'd ask a lot of questions... Especially since I was new. I'd ask so that I can understand. I'd ask so that I can relate. I'd ask so that my equipment didn't end up on eBay. I'd ask so that I don't buy something and then a month later decide "it just ain't for me" beacuse I'm wearing the wrong gear.
So please take no offense. I'm looking for understanding here.
I just can't wait to dive a backplate... I liked the Transpac... It was better than the Scubapro Glide jacket that I wore an hour earlier. I wasn't really sold on either. My favorite is still the Scubapro Classic jacket, but I'm dying to try the bp/wing setup too. I feel like a sportbike guy trying to understand cruisers by buying the fastest cruiser I can find... Which really seems a little like I'm missing the point.
...Which makes me want to ask more questions. At some point here, if I don't get to dive a bp/wing correctly set up, then I'm going to eventually decide that I just don't get it. Maybe I'm not supposed to.
On the backplate pushing you on your face. That's why you want the extra 6lbs of trim weights. So you can slap it on the butt of the AL tank to keep it from lifting from the rear. Especially when it's empty. My HP steels are heavy and don't do that.
Yeah, I did finally figure out why my experiences were so different from everyone else's... It was all about trim, which I got pretty decent as soon as I realized what I'd been doing wrong. From there, I found out that basically I can pretty much balance anything. My feeling is, now, that anyone who complains of the face-forward syndrome isn't trimming themselves correctly.
On the other hand, the reason that many have never developed this skill is probably because jacket style BC's don't need to be trimmed... Waist and front weights ARE trimmed correctly when you have inflation in the front. Not so with back inflates and backplates. On those, the weight needs to be placed in other places in order to get the same results.
My experience (however short) is that if it were MY BCD, I'd trim whatever I wore the correct way and be done with it, and thus never really have any trim issues, no matter what rig I dove. I think most would probably do the same, with experience.