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Is there a hi/lo mode using the flashlight body instead of the canister or is it only on/off? How is the balance of the light if you use the Goodman handle with the flashlight body? iPhone. iTypo. iApologize.

Most of the octo inflator combos breathe like crap and are difficult to use. You are breathing from a very short corrugated hose and trying to maintain buoyancy of your wing at the same time. That being said, I have used one on my rebreather to give me access to my onboard cylinder in a...

I would say the chances of it being a fake are much higher than it being real. Check if there is any provenance, and then check the validity of the provenance. But if it's real, that's not a bad price.

Absolutely shocked and speechless. Condolences to the entire dive community. Lynne will be sorely missed.

This is grossly inaccurate. A low pressure cylinder attains whatever capacity it is filled to, regardless of rating. Take a LP cylinder to cave country and you can probably get it filled to 4000 psi if you like. It all depends on the shop, or if you fill it yourself.

It all depends on the particular FFM. Some have the gas flow into the visor space and then through mushroom valves into the oronasal cup. These could potentially have some residual O2 from the previous gas, but I think the amount would be inconsequential compared to tidal volume. There should be...

I didn't mean to imply that he was using it for warmth. Only that it was stupid to use a chemical pack in the first place for whatever reason. Even if he was using air for his suit inflation, it would still be an elevated pO2 at depth. And you know how much it bothers me to agree with AJ...

Whether you like more light or less in murky conditions is very subjective. All turbid water is not the same. So why not get a bright light that can be adjusted? Many of the LED lights have 2-3 power levels. By adjusting both power and the angle and position you aim the light you should be able...

Maybe you just need to understand the terminology a little. Having an extra second stage connected to the first stage is the very definition of an octopus. So there is no difference in your initial question. Some people use a lower quality, cheaper second stage for their octo, or maybe one...

The chances are that an older model is listed on eBay because the owner upgraded to a newer model, not because of a problem with it. So while there is always the chance of getting burned, I think the risk is low. But the improvements have been significant. So unless the cost difference puts a...

Idiotic, plain & simple. There are electric suit heaters that are specifically designed for diving. Using a chemical pack is stupid. Being unaware of the reaction with suit gas is stupid. And if he had been aware, he should have used a separate inflation gas than his enriched deco mix.

Going back to the original post, there are some things to point out. 1. Lumens vs lux. This is a very tough one because it isn't as simple as I'm going to present it, and most manufacturers do not list lux. If you could somehow capture all of the light coming out of the lighthead, that is a...

My comment has nothing to do with using helium mixes. I always use a separate inflation bottle for my drysuit. It is filled with air. The times I have used argon instead, I found no noticeable difference in warmth. My bailout regs all have an inflator hose on them in case my inflation bottle...

I never found any difference using argon except how much lighter it made my wallet. iPhone. iTypo. iApologize.

I still have one of those in my attic somewhere. It's what I learned on in the 70s. The ones with the CO2 cartridge were the fancy ones, top of the line. This technology was real. Liquid breathing gas was being experimented with by the navy. Don't know what ever came of it. I always...

I'll start the bidding at $100 iPhone. iTypo. iApologize.

I'm a little confused. If all supply cylinder valves are open at the same time, you don't actually have a cascade, do you? My little basement fill station has 7 supply tanks leading to a manifold that has a gauge and leads to a whip with a needle valve. On the far side of the needle valve is...

But what about the positive pressure aspect to reduce WOB? Gas density is the big factor. Doc Deep was expecting to have some permanent lung damage from the dive. Helium only goes so far in reducing density. At some point you have to push the gas into the lungs. Ajduplessis might be correct...

This reminds me of an interview years ago with humorist singer Richard "Kinky" Friedman. He mentioned that he wanted to become a famous folk artist along the lines of Jim Croce. When the interviewer pointed out that Croce did not become famous until after he had died, Friedman responded "We're...

I have several Apeks firsts and a couple of seconds. I'm not sure which models they are I think some were Tx20. All the firsts have a turret. I'm not sure what they go for. I know at least 3 of them were serviced and then put away and not used since. I can dig them out and post photos...