ccr

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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

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...

Shearwater Petrel 2 EXT for sale. Some minor scuffs on bezel and screen protector from normal use. Screen is unscratched/undamaged. Purchased on July 30, 2020, serviced in April 2022 by Divetronix (the depth sensor was changed at no cost to me). Has 15 hours on it post service. Will include...

As I study to get ready for the CCR class, I discovered something that may be obvious to many but was definitely not to me. “Surface intervals are not always the most efficient way to off-gas nitrogen after a dive”. Depending on the blend, there is an optimal depth at which the off-gassing is...

Very curious which rebreathers divers in south Florida are using. I'm sure northern Florida is dominated by cavers, but what about here in the south? Would love to hear not just the make/model, but also the type of diving you use it for, why you initially chose it, what features you like/don't...

As the title states, I'm interested in learning about local community/group for CCR divers. I'm very interested in converting, but need to find buddies, information, etc. I mostly dive out of Pompano. I'm not even sure where to start. I'd like to know what units others dive in the area. I see...

TL;DR: Shearwater should allow us to manually vote cells; why not? Howdy folks, If we track mV or if Shearwater does it for us, should we not be able to to identify bad cells and vote them out? There are at least several ways of accomplishing that. First, there is a pure manual way. You...

I am organizing a CCR MOD1 (air diluent) course on the Megalodon CCR to be hosted in Honolulu this fall (I will be one of the students). I have reached out to two very reputable and well-known Meg instructor trainers who are both available to come out and teach the course, tentatively in...

Does anyone have any experience with the CCR training at Honolulu Scuba Company (HSC) here on Oahu? Particularly on a Se7en? I’ve decided to (finally) make the jump from OC to CC after thinking about it for (many) years, both for my weekly normal dives and for the deeper stuff where I normally...