1. inquis

    Review Third Dimension Diving (MOD1)

    I recently went to Tulum and met up with Third Dimension Diving for a MOD1-level certification on a backmount Fathom unit. There aren't many reviews of 3D here on Scubaboard, so I wanted to offer my thoughts on the experience. First of all, the travel: the hardest part of getting there was the...
  2. mr_v

    rEvo butt plate - $100

    $100 shipped CONUS. Good working condition. Gently used in fresh water for ~15 hours.
  3. dgordondp

    CCR Divers near Columbia, Tennessee?

    Hey all! Are there any CCR divers who would be available for a half day project on the morning of Sept. 26th? I'm part of a sci-fi film project that's looking for divers in Columbia, Tennessee. If you're available and this piques your interest, DM me and I can connect you to our producing team...
  4. LFMarm

    Diving a wired computer disconnected from the head

    Hi everyone, Is anyone aware of water-tight caps that can be screwed to the wired 4-pin or 5-pin connection to be able to dive in OC with a wired computer? The cap I am looking for would replace the connector highlighted in the picture and allow to dive the computer in OC without having salt...
  5. PEDiver

    Sidemount Bailout Config?

    Didn't see a thread on this so thought I would ask. If you're diving a BM unit and are sidemounting bailout, how do you have that configured? Are you running loop bungees from the backplate and using a butt plate or metal stand to clip off the SM tanks? I've seen some premade options from...
  6. LFMarm

    Closed Petrel 3 controller for Dive Rite Optima

    I am looking for a Petrel 3 controller for Dive Rite Optima (it can be from either a back mount or a chest mount unit given that the head is the same). Let me know if you have a good unit you are looking to get rid of.
  7. LFMarm

    Best global locations for rebreather diving

    Hi all, Here on Scubaboard there are lots of great reports of locations for OC diving and I would love to start one for CC diving. I would consider these requirements for a location to be suitable for this list: 1. You can get O2 fills 2. You can buy sorb 3. Local laws allow for rebreather...
  8. L

    Question Triton CCR DSV & hoses

    Hello, I was wondering if anyone could share some of their knowledge on this. I was wondering if the Triton chest mount can have it's dsv and hoses easily replaced with a different brand, and if anyone has done this or knows the diameter of the fittings on the loop hoses. Looking at some of the...
  9. cklaus

    For Sale KISS Classic #287

    For Sale: KISS Classic #287 This KISS Classic is completely cleaned and is in excellent working order. It comes with many extras and is ready to dive*. Included: The Unit (head, sorb canister, counter lung case, loop hoses, etc) Petrel 3 - 4 Pin (about 25 hours of use) HUD (Uninstalled...
  10. serpentara

    Sold! Hydraulics International Oxygen Booster Model 3G-SS-20-O For Sale

    Up for sale is a Hydraulics International Oxygen Booster model 3G-SS-20-O. This is a great little booster that is perfect for filling rebreather bottles or with enough time, 40 or 80 ft.³ bail out bottles. It can be driven with a home air compressor at 150 psi. 150 Psi drive gas will allow...
  11. zach613

    Sold! Hollis Prism 2 with BMCL

    Selling a Hollis Prism2 rebreather. Unit purchased in 2019 from an owner of a shop where it had been used as a try diving unit with only 8 hours on it from ~2016. I upgraded the head in 2021 with a Petrel 2 controller and new HUD. Since then I have only dove it twice. I added an extra 5-pin...
  12. sprockjohnson

    Titan CCR solenoid replacement/ substitute

    My buddy bought a used Titan CCR about 6 months ago and the solenoid appears to have failed completely. He's not mechanically minded so I am attempting to assist him in getting the unit back to working condition, which it had been in until the solenoid stopped functioning and the Predator...
  13. LFMarm

    Megalodon teeth rebreather charters

    Hi there, are there any Meg Ledge charters that organize trips for CC divers? From what I understand, these are typically 30m/100ft dives that would benefit greatly from a rebreather to increase bottom time and decrease deco time. After some time spent on Google, I have not been able to find any...
  14. C

    For Sale APD Evolution with Vision 2020

    APD Evolution with Vison 2020, Back mounted counter lungs, and full Trimix software, BOV, and off board QD. Over the shoulder counter lungs and harness included along with an extra small and large wings. 2 sets of 2L bottles, 1 HP and 1LP. See photos attached for everything included. Located...
  15. MattK911

    FATHOM Dive Systems Q&A

    Hi everyone, I wanted to open up this forum to act as a Q&A for Charlie Roberson and I (Matt Key) for questions involving our rebreathers. We want to make ourselves available within the ScubaBoard Community, and answering any questions you may have involving our design, philosophy, or anything...
  16. PEDiver

    Closed Dive Rite O2ptima CM (Choptima)

    Dive Rite O2ptima CM (Choptima) for sale. Asking $6,000. Unit is in great shape and is ready to dive. Well taken care of and primarily dived in fresh water. Sale will include the following: Shearwater NERD2 HUD 2 x 13 cuft. O2 bottles MAV and ADV (currently using the MAV) 2 unopened EAC In...
  17. N

    Question Mount bailout tank with OTS lungs

    Hi, I need some tips on how to mount bailout tanks when diving over the soulder counterlungs. If using a normal D-ring on the harness, the counterlungs will cover the D-ring and it will be impossible to access the D-ring. Especially when diving in cold waters with drysuit and dry gloves. Now...
  18. LFMarm

    Pre-breathing procedure

    Hi all, I am trying to understand in detail the sequence of pre-breathing actions and their reason. Acknowledging that pre-breathing has been proven ineffective for hypercapnia prevention (article from @Dr Simon Mitchell in 2015; also discussed at length here Does Pre-breathing Your Rebreather...
  19. LFMarm

    Loop wraps — functional or fashion?

    I see many CCR divers wrapping their loops with cordura covers. Are these just for the looks or do they have a functional reason?
  20. LFMarm

    Question Dive time management - multi-level vs. square profile

    Hi all, Would love to hear feedback on the approach I am envisioning for managing real life multi-level long deco dives on CCR. Below is my approach and a couple of simulated examples to show how it would work in the water. Configuration is CCR with on-board oxygen; 2 AL80 tanks for diluent and...
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