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Recently a friend completed his MOD 1 and as part of it a recommendation was made or discussed regarding a particular style of configuration applicable to cave/OHE diving. Specifically the recommendation was that in the event of having 2 primary, same gas cylinders, with BOV on the left and...

Following on, and prompted by the GUE thread recently and a few others, I thought it would be interesting to understand a bit more about the history and considerations that have gone into rebreather configuration and design from the influences of the WKPP, GUE, KUR and others who have been at...

A while ago in another thread I think from Tbone, there was a short OT point about stages/deco bottles in SM. Some clip beneath the SM back gas, others leash or nose clip to butt d ring or rails. I'm interested in the reasons why people choose the clipping point they use. If you use a leash...

assuming you aren't offboarding dil, just wondering how people approach the point when a bailout or OC deco gas bottle gets to the point where a top up is required. You alaways lose a bit either just through pressurisatioin or de-pressuriation, testing a BOV etc. It's an expensive option to...

Has anyone had any real world experiences of using the O Dive sesnsor since its launch, there appears to be a small amount of encouraging feedback on their site, but wondered if there was anything more independent out there.

Firstly I have tried searching but for some reason the search function is not operational and prior threads that come back from google are 404. A few of us were diving normoxic wrecks over the weekend at circa 50-60m and there was some discussion about whether to bump up the set point on deco...

Picking up on some of the recent threads on features to look for, important criteria to consider, one of the discussion points related to flood tolerance or recoverability, so not how resistant the unit is to a flood but if it floods can you de-water it and continue. This got me thinking and...

Since transitioning to SM bailout most of my diving has been shallow in OHE requiring 2xsteel nitrox bailouts. In the sea though with higher fractions of HE in the deep bailout I am finding it hard to tame the SM cylinder. Deep bailout is 15/55. I am gradually moving the rear bolt around the...

OK this might be get contentious. I can foresee a side mount, chest mount, or Sidewinder (SW) style unit in my future given the nature of the most commonly encountered overhead in the UK. Some of this is or will be sump, some is flooded mine, often with awkward access routes to water. Depths...

I am just wondering if anyone has any tips and tricks for on point buoyancy, I still miss the fine adjustments available on OC from lung volume control. A lot of our overhead dives are in 5-10m which inevitably makes things tougher but I am on an MCCR which is perhaps more forgiving. I always...

Linked to the other thread the main line in the mines we dive predominantly were laid about 8-9 years ago during the initial exploration but are now in need of some TLC. I'd be interested in the protocols used by others in similar pursuits. Do you lay new alongside old, move markers across and...

We are lucky enough to have a mine relatively close which still has some unlined chambers which we are going to line for future trips, surveying etc. I'm interested to understand whether in similar circumstances, laying line you go back and tidy it up after a rough recce, lay a spool or...

Just wondering about preference, I've been diving steel 12s on drop d's and found it worked well, swapped to waist d's I'm preparation for adding a stage or stage which I thought would be easier with the SM cyls on waist d's and stages in drop d's at rear. Needs some fettling to get sorted and...

I've just had to get a new Fischer on my BM unit, and am wondering how others route there cable. Previously my Fischer which came second hand with the unit, was just about the right length to route along my arm and be tidy with a large diameter o-ring over it at the elbow to avoid entanglement...

We were lucky enough to be able to spend a week in Scapa (N Scotland) last week. Mixed group of oc and ccr depths from 25-45m 2 deco dives per day on average and either ascent via the shot or on SMBs depending on the dive, conditions etc. A relatively hot topic for the week was how hard it is...

If you have a project or dive that requires set up in terms of staging safeties in the OHE, typically how long do they remain in situ, and do you verify the stage on each entry pass, by breathing off it?

Given the nature of the environment it is not uncommon for an ohe to require exertion pre and post dive, often following a decompression exposure, possibly a saw tooth profile and involving a multitude of heavy items to get to and from the dive base. My questions are around how best to manage...

As per the title really, I have been playing around with this idea for a while but can't bring myself to commit due to horror stories about how much faff is involved, especially after a Covid break, wasting time with new configurations is low on the agenda, So I currently dive a BM unit (KISS...

As many probably do, I constantly evaluate my rig and tweak and change it. Up until relatively recently I used to run the 2nd stage for the deep bailout on a necklace to back-up the BOV. When I switched to a QD on the deep bailout I also started stowing the back up 2nd on the stage. Partly...

Just wondering if anyone has rules of thumb about how far they are comfortable on fin power alone. Obviously flow/no flow will influence this as would open or closed circuit and depth/deco. Locally we are no flow and a mixture of OC and CCR but the environments are mainly less than 25m deep...