The O2ptima rebreather design lets the diver use a standard wing design, horseshoe or donut. The key issue for most CCr divers is the placement of the upper elbow on the inflator hose as well as regulator hose routing when using a standard wing. There is too much clutter behind the head and the inflator hose can interfere with the counterlungs. Our new CCR EXP wing addresses these issues.
The elbow is offset further out on the left shoulder of the wing so it is not squeezed behind the diver, making the hose routing more comfortable along the outer side of the counterlung. The wing has 50lbs of lift with a gusset control cord, if you want to limit lift and make the wing more compact. The donut shape means air won’t get trapped on the sides.
The best feature of the design is the open center that allows hoses to be routed up through the wing rather than come over the top of it, restricting air flow. I was amazed at the difference this made in comfort and trim with the revised hose routing.
After months of testing, we have the new O2ptima 5L (2.5L per CL) counter lung set. The 4L counterlungs were designed for experienced CCR divers and women, but weren’t enough volume for active divers. I could bottom them out on an easy swim. The 6L counterlungs worked fine, but the size of the lungs added clutter to the chest area and the retention strap down to the waist belt was a necessary annoyance.
The best design ended up being 5L counterlungs in a longer teardrop shape-version of the 4L set with enough volume for a working diver. The bottom of the lung is secured to the shoulder strap with a Velcro loop on continuous webbing harnesses or with a bungee loop thru the quick release buckles on a TransPac or TransPlate harness. Shoulder D-rings are now easier to get to and the Offset D-rings are even easier.
O2ptima divers wanting to upgrade, keep your current lungs, but send us the valves and we’ll put them on the new 5L counterlungs for $150. Or send us your CL set and we’ll change out the valves for you. If your O2ptima is ready for annual service, then we’ll reduce the CL upgrade to $125 (plus the $199 annual service fee).
There are pictures of Jared and I diving the new lungs the Dive Rite Facebook page.
We get questions about the difference between the TransPac and TransPac II so I thought I would give you some history on the TransPac. The original TransPac was on the market from mid 1995 to March of 1997. This first generation model had the shoulder straps bolted to the waist belt. In the spring of 1997 we launched the TransPac II. The key differences were the change from bolts to a stainless steel sideplate and interchangeable shoulder straps so we could customize the fit to the diver. The shoulder pad and strap were integrated and attached to the back plate via stainless steel slides and Velcro for pad placement. After a few years we eliminated the right shoulder epilate to stop the routing of backup BC hoses over the shoulder. At some time late in this product’s life we dropped the II from the name “TransPac II,” while making some important changes for the evolution of the product. This era TransPac can be easily identified by the embroidered red/white logo and TransPac name on the epilates.
In 2005 we moved production to a modern facility in the USA that used computerized machines to produce a high quality product. The major change to the product was integrating the over-the-shoulder straps into the back plate so sizing could be more easily changed by trading out only the shoulder pad and not the entire assembly. This allowed divers to tweak the fit even more with half sizes if desired.
In 2010 we introduced narrow side plates and resized the hip pads for improved accessory mounting. You can spot the latest production product by checking the epilate. It will be labeled with a rubber patch that has our new red/yellow/white logo.