• 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

Kupu's Recent Activity

  1. Kupu liked rsingler's post in the thread solution for D-series poppet seat DIY?.

    Well, here's the next installment on the experiments. To respond to @Kupu's question, I don't think the spring that backs the poppet is...

    210107_143903.jpg 210107_143422.jpg 210107_143712.jpg 20210114_130405.jpg 20210114_130430.jpg 20210114_130341.jpg Jan 15, 2021 at 7:51 AM
  2. Kupu liked rsingler's post in the thread solution for D-series poppet seat DIY?.

    Costs are not high, since a washer type oring is a standard shape. That's what I tried with the X-profile in a post above, but it...

    SharedScreenshot.jpg Jan 13, 2021 at 10:39 PM
  3. Kupu liked rsingler's post in the thread solution for D-series poppet seat DIY?.

    Been working on @Kupu's poppet nonstop, and have more info. I think we're getting closer! First experiment was on the best way to...

    20210113_160514.jpg 20210113_154826.jpg 20210112_173551.jpg Jan 13, 2021 at 10:39 PM
  4. Kupu liked lexvil's post in the thread solution for D-series poppet seat DIY?.

    Nice methodical approach, while my main concern has been with improving the D420, I have started putting the 104 in my AIR 1’s which is...

    Jan 13, 2021 at 10:39 PM
  5. Kupu replied to the thread solution for D-series poppet seat DIY?.

    @rsingler I am certainly impressed by the amount of time and effort you are investing in this idea. Great stuff. I just had a look at...

    Jan 13, 2021 at 10:38 PM
  6. Kupu replied to the thread solution for D-series poppet seat DIY?.

    I was on the road all day, and this idea floated into my mind. What about a custom orings? Instead of trying to work thru the issues...

    Jan 13, 2021 at 6:09 PM
  7. Kupu liked rsingler's post in the thread solution for D-series poppet seat DIY?.

    I can't let go of this poppet project of @Kupu's! My 50 duro 104 poppets are still looking great after a month of sitting under spring...

    20210112_092608.jpg 20210112_114159.jpg 20210112_114426.jpg Jan 12, 2021 at 7:15 PM
  8. Kupu liked lexvil's post in the thread solution for D-series poppet seat DIY?.

    I’ve given up on this twice and yet again I’m back at it too, so far testing in the 420 using the adhesive method and only the top o...

    Jan 12, 2021 at 7:15 PM
  9. Kupu replied to the thread solution for D-series poppet seat DIY?.

    I'm happy to see there is still interest and and at least some potential of a working solution. It will be months before I have time to...

    Jan 12, 2021 at 7:15 PM
  10. Kupu liked rsingler's post in the thread WOB questions.

    It used to be that the technician tuning a G250 could play a role in WOB by how he/she adjusted the VIVA venturi vane. This was before...

    Screenshot_20191230-134203_OneDrive.jpg 20200123_145601.jpg Jan 11, 2021 at 6:46 PM
  11. Kupu liked rsingler's post in the thread My new G250Vs and ramblings.

    I just couldn't quite let this go yet. @Open Ocean Diver already did the study, and posted the numbers above. But for the visual folks,...

    20210111_090539.jpg 20210111_102524.jpg 20200317_182403.jpg 20210111_113158.jpg 20210111_090430.jpg 20210111_090604.jpg Jan 11, 2021 at 3:47 PM
  12. Kupu replied to the thread My new G250Vs and ramblings.

    After seeing the sad chart (venturi collar out of position) for the Cyklon above, I had a look at the old NEDU test charts to reassure...

    Jan 11, 2021 at 3:47 PM