• Welcome to ScubaBoard


  1. 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. Login or Register now by clicking on the button

LCD or Torus wing?

Discussion in 'Deep Sea Supply' started by scuba_sirhc, Feb 4, 2007.

  1. scuba_sirhc

    scuba_sirhc Nassau Grouper

    # of Dives: 100 - 199
    Location: Singapore
    104
    0
    0
    Hi Tobin,
    What is the difference between LCD and Torus wing other than the Torus is a newer model? Are their performance comparable?
     
  2. cool_hardware52

    cool_hardware52 Dive Equipment Manufacturer

    7,582
    1,782
    113
    The Torus wings are full circle,and the LCD wings are horseshoe style. If you have Torus wing of appropriate size and shape, and compare it to a LCD wing of appropriate size and shape there will be very little difference in venting, drag etc. Donut wings are nice, but they do not result in instant perfection in your diving.

    That's the simple part.

    First you need to determine the lift your application requires. Then it's worth taking a look at potential trim issues.

    We now build wings that either offer more lift near the divers shoulders, or at the divers hips.

    If I know a bit more about your height, weight, exposure suit, tanks etc. I can usually make an educated guess as to which style is appropriate.

    Tobin
     
  3. abrown203

    abrown203 Nassau Grouper

    # of Dives: 200 - 499
    Location: Lake County, Illinois
    106
    7
    18
    Tobin,

    I was just getting ready to post the exact same question. I would appreciate your recommendation.

    Height: 6'0"
    Weight: 190lbs
    Exposure Suit: Typically a Drysuit, but 7mm wetsuit as well
    Tanks: Steel HP80. Thinking about a steel HP100, but maybe a steel HP120, LP95 or LP108.
    Current BC: Zeagle Ranger
    Typical Dive: So Cal beach diving

    Thanks,
     
  4. cool_hardware52

    cool_hardware52 Dive Equipment Manufacturer

    7,582
    1,782
    113

    AAron,

    I'm happy to make a recommendation, but you need to be more specific.

    The range of tanks you *might* use is huge. A LP 108 is -8 (full) and a HP120 is -16 (full). If you wan the smallest practical wing you need to narrow your choices.

    With your heaviest exposure suit and current tank (HP80?), how much additional ballast do you use? This information will allow me to estimate the initial buoyancy of your suit.

    Thanks,

    Tobin
     
  5. abrown203

    abrown203 Nassau Grouper

    # of Dives: 200 - 499
    Location: Lake County, Illinois
    106
    7
    18
    I understand. I very much appreciate your attention to detail.

    Let's stick with the HP80. When I beach dive dry I use 24lbs in my Zeagle Ranger and 3lbs on the ankles (1.5lbs/each ankle) for a total of 27 lbs. I see a HP100 in my future though.


    Just so you know my personality a little better... I am just a regular Joe looking to transition from a traditional BC to the simplicity and stability of a BP/W. I am not looking for the perfect BC for a fixed configuration. I do not tweak my rig setup for absolute least possible drag or loose sleep worrying about having the perfect trim. It has never really bothered me that my Ranger has much more lift (44lbs) than I have ever needed. It is actually a little bit of security. I understand that when you go to a BP/W setup you are required to make more choices. I also admit that a lot of this thinking may be out of ignorance, and I am always open to education.

    Thanks for your advice,
     
  6. cool_hardware52

    cool_hardware52 Dive Equipment Manufacturer

    7,582
    1,782
    113
    Aaron,

    If I understand your current configuration you have about 36 lbs of total ballast, 27 lbs of lead, a tank that's -7 empty, (faber hp 80?) and maybe 2 lbs of regulators.

    That's quite a bit of ballast. Even if we assume a couple lbs to overcome a buoyant BC, that leaves ~34 lbs to sink your wetsuit.

    I'll do an example here based on those numbers, but you might want to verify your suit alone is +~34.

    If you use a SS plate and harness, with 8 lb weight plates, a Faber HP 80 and regulator your rig will be max negative with a full cylinder by ~29 lbs.

    You are going to need another ~5 lbs of additional ballast (29+5=34) I'll assume that's in a belt.

    Your suit can loose no more than 34 lbs of buoyancy if you go deep enough to fully compress it. That means you need ~34lb so of wing to offset the buoyancy loss of your suit.

    Your rig is 29, 29<34, so minimum wing size is 34 lbs. A Torus 35 is a good match.

    If it turns out your suit is less than 34 lbs positive, then you may be able to use a smaller wing.

    Let me know if you have other questions.

    Tobin
     
  7. abrown203

    abrown203 Nassau Grouper

    # of Dives: 200 - 499
    Location: Lake County, Illinois
    106
    7
    18
    A few of your word choices make me wonder if you are thinking wetsuit. The numbers I gave you were for my drysuit. Just checking.

    I'll do that. I have been wanting to get around to this for for a while.

    Thanks,
     
  8. cool_hardware52

    cool_hardware52 Dive Equipment Manufacturer

    7,582
    1,782
    113
    Your right, I was thinking Drysuit, thanks. #34 is still high for a Drysuit.

    Tobin
     
  9. scuba_sirhc

    scuba_sirhc Nassau Grouper

    # of Dives: 100 - 199
    Location: Singapore
    104
    0
    0
    Hi Tobin,
    Im now ready to get a DSS single rig.Im looking for something light for travel.Im 1.75m tall and weigh 65kg.I usually dive with a dive skin in seawaters. Do you recommend hog harness or the pro-fit harness?Oh and how do I go about ordering??
     
  10. cool_hardware52

    cool_hardware52 Dive Equipment Manufacturer

    7,582
    1,782
    113
    Sirhc,

    Unless you have compelling reason to use and adjustable harness, like an injury, I recommend the single piece harness.


    Tobin
     

Share This Page