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Nauticam RX100 Buoyancy

Discussion in 'Sony Snappers' started by Interceptor121, Oct 19, 2012.

  1. Interceptor121

    Interceptor121 PADI Pro

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    I would like to know the buoyancy of this housing with the camera.
    If I look at the specifications in terms of dimensions and weights this housing together with the camera should be positive (1.5 liter volume and 0.77+0.24 for housing plus camera weight)
    However I read on the housing manual that is slightly negative though I can't understand if this is without the camera (which means the dimensions or the housing weight are badly wrong)
    I have also seen a rig with two sola light and ultralight arms with 4 stix jumbo floats suggesting that once you add lights and arms this is 1.5 lbs negative. Considering the sola are not that negative this to me means the housing and camera is pretty negative

    Can anyone that has this housing and the DSC-RX100 tell me what is the buoyancy of the housing plus camera combo?
     
  2. cardog

    cardog Manta Ray

    # of Dives: 200 - 499
    Location: Enumclaw, Washington, United States
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    67
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    Mine is still positive with four Fix floats on my strobe arms. I'll be adding two more on my next dive and that should get me neutral.....
     
    FirasR likes this.
  3. Interceptor121

    Interceptor121 PADI Pro

    4,315
    636
    113
  4. cardog

    cardog Manta Ray

    # of Dives: 200 - 499
    Location: Enumclaw, Washington, United States
    801
    67
    28
    That's what I get for posting right before I go to bed.......
     
  5. Interceptor121

    Interceptor121 PADI Pro

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    The point is that the arms and clamps are themselves negative. Two 5" arms and 3 clamps with head adapter is around 8.5 Oz according to Ultralight
    Now once you put a handle you need two jumbo floats to make near to neutral and then you still have camera, tray and lenses
    In essence in order to make it neutral you need a float on the tray itself as well or buoyant arms
     
  6. Interceptor121

    Interceptor121 PADI Pro

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    For who is interested the rig Camera+Housing is 170 grams or 6 Oz negative

    I just realized my scale has got grams precision and done it again. 160 grams
     

    Attached Files:

    Last edited: Oct 25, 2012
    ivakdiver likes this.
  7. zabbaskeema

    zabbaskeema Angel Fish

    # of Dives: 100 - 199
    Location: Cologne, Germany
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    If that can help someone, I have just checked my new rig:
    Rx100, YS-D1, nauticam housing and tray + 2x5" arms, subsee +5
    Total 855g in the water.

    I added a 12"x2" PVC float and it's down to about 350g.

    I will have to live with that, on my way to HI now :)

    Hope i will be fine in salt water....
     
  8. Interceptor121

    Interceptor121 PADI Pro

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    12x2 and? What is the third dimension? one foot times 2 inches times probably two inches is not a lot of lift for the volume

    I would consider other materials
     
  9. zabbaskeema

    zabbaskeema Angel Fish

    # of Dives: 100 - 199
    Location: Cologne, Germany
    19
    3
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    Hi there!

    Its a pipe, so 12 inches by 1.5" diameter (sorry, 2" was my first idea but I choosed 1.5")

    Its temporary I did not have enough time before leaving..

    My old rig was almost neutral... Now I wonder if that weight will be manageable in real life conditions in the salt water

    I wonder how 350g negative will feels like...

    I am in the plane to Hawaii, so I will find out soon enough :)

    Cheers!

    Pat
     
  10. Interceptor121

    Interceptor121 PADI Pro

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    350 overall will feel ok for stills

    Will the PVC pipe be strong enough not to implode??
     

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