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To be clear, what I'm saying: - Neoprene glove liners, inside your dryglove, equalized with suit pressure as you descend, will compress and lose some of their insulative properties as you descend. - Merino/fleece/Primaloft drygloves, equalized with suit pressure and given sufficient room to...

I’m not sure about that. I agree that neoprene will compress, because it contains completely-sealed gas bubbles that compress with an increase in absolute pressure. But conventional insulation that relies on ‘loft’ (like Primaloft or fleece) doesn’t have sealed gas bubbles, so I don’t see why it...

Two product suggestions: These heated motorcycle liners, which I’ve been using for 3 years without any issues. They do want to run on a slightly higher voltage than many 12V batteries, since they’re intended to run on 13V+ alternator output, but they still pull 18W @ 12V. Wrist warmers/wrist...

Whoa. That’s a big chunk more than the cost in the EU. £3150 currently, including the 20% VAT. Should work out to $3500 USD without the VAT (which doesn’t need to be charged on shipments outside the UK).

To me, a relative newcomer to GUE (since 2021), it seems fairly clear that GUE did have a problem with the kind of behavior that @Doc Harry describes. Here are a few of the questions (response on a scale of 1-5) from the mandatory QC form that GUE students have to fill out before getting their...

Perhaps Tecme.de ? https://www.tecme.de/displayunits.htm

Boltsnap, pocket

Aged like fine milk:

There is a strong contingent of GUE backmount tech divers on Vancouver Island. I took Fundies (and CCR-F) from Jason Cook, and did T1 with Guy Shockey. I would highly recommend both, and I know a lot of divers with similar experience who took Fundies with Jason and had a great experience. I...

I have a mix of XTX40 and XTX50 regs. Personally I use the XTX40 for my necklace (since that's detuned basically all the time), and I use the XTX50s on my long hose and deco reg. Reason being that I expect to be breathing off those regs for the entire dive, but I want to be able to detune...

I don't cave dive, just open-water tech in the chilly PNW. I have a canister light and a bunch of cordless lights. I generally prefer the cordless light, especially when there's a lot going on (deco bottles, scooter) for the cord to keep catching on, or if I anticipate needing to clip the light...

I think 'Deco for Divers' is a great book to give an overview of decompression theory, and set me up well for the classroom portions of Fundies. Even if the material is not a 1:1 match with the deco 'philosophy' of GUE, it's an excellent overview of the history, the different schools of thought...

I'm a big proponent of sealed diaphragm regs for maximum longevity, especially if you're diving in saltwater, and especially if there is sand/muck involved. Mk17/19 for Scubapro; if you're buying used, my entire reg fleet is used Apeks regs, and they all take the same (readily available) service...

The idea here is basically to do the first half of what you describe - exterior fresh-water rinse, rinse/disinfect the counterlungs and loop on the stand, pull the scrubber and dry/repack it, and add the 'water scrubber' to the head and dry everything else in place. Flipping the unit (in the GUE...

That’s pretty much what I’m thinking, yep. I can’t think of a ton of reasons it won’t work, and it would let me rinse and then dry the rebreather entirely on the stand. Also, frankly, I think it’s hilarious to turn it from a CO2 scrubber into a water vapor scrubber.

But what's the fun in that?!

In my endless quest for optimization, I'm thinking about how I can dry the loop of my JJ most efficiently/effectively (preferably without breaking down the entire unit). I've seen a few options for loop drying that use a fan pointed at either the head or straight into a counterlung, but now I'm...

This is an incredible resource. Am I to understand that all the O-rings, with the exception of those marked as Viton, are Buna-N D75? Is the 75 just for availability, or is there some incredibly subtle difference vs D70 o-rings? (My motivation - given current exchange rates, trying to source...

My DIY tips are: - Crab pot floats, they tend to be about 1lb of buoyancy, foam doesn’t collapse at depth, very cheap ($2 per float at my local marine store) - If you want to get fancy, a 3D printer and ASA Aero foam. I’ve successfully made float mounts for DPV accessories and cameras for...

FWIW, I just did my CCR-F course. Started with DS4s, but the hose routing (especially with the drysuit off the left post - not a long-term problem, hopefully) wasn’t great. I switched to my FSR regs with the 5th port and the routing is much better. I imagine the DST would also be ideal, but I...