diving (scuba) questions (OT)


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Messages 41 - 60 of total 104 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
Big Mike

Trad climber
Jan 26, 2013 - 02:02pm PT
Just press the photo button again eastside. Each time you do it generates a new code for the photo you pick.

Social climber
Portland, Oregon
Jan 26, 2013 - 02:12pm PT
Uhhhh, Froodish, Don't you mean, Cosmic?

Doh!, yes, sorry, reading too fast.
east side underground

Hilton crk,ca
Jan 26, 2013 - 02:18pm PT
thanks, big mike. I hope we get into winter mode again soon. way to warm here[photo
Credit: east side underground

Boulder, CO
Topic Author's Reply - Jan 26, 2013 - 02:31pm PT
OK Zeagle junkies....

which one:
Big Mike

Trad climber
Jan 26, 2013 - 02:48pm PT
Credit: east side underground

Me too. You almost got it! Just make sure the photoid's are separate!

Hey! That's Sproatt right?
east side underground

Hilton crk,ca
Jan 26, 2013 - 02:52pm PT
I have no idea mike, but it's your hood.... which rocks!!!!
this just in

north fork
Jan 26, 2013 - 03:02pm PT
I have the Concept II which has been discontinued. The ranger looks similar and seems like a good deal. If you ever get down to the south pacific, New Zealand and Fiji are incredible dive spots and though I haven't been to Australia, The great barrier reef.

Boulder, CO
Topic Author's Reply - Jan 26, 2013 - 03:14pm PT
I was thinking the Ranger as well. hmm....
Sierra Ledge Rat

Mountain climber
Old and Broken Down in Appalachia
Jan 26, 2013 - 03:20pm PT
so what's the latest and greatest these days.

I strongly recommend that you look in the Hogarthian configuration. As a climber, you will appreciate the harness and simplicity. Steer away from the old-school jacket BCs.

The Hogarthian configuration is also known as the backplate & wing (BP/W) configuration. It was named after Bill Hogarth, who revised the "standard" scuba configuration into something much more simplistic, modular and clean. The Hogarthian configuration works for both recreational and technical diving.

Underwater you are suspended from the harness so you don't even feel the backplate. The plate and harness together are like a climber's harness - very secure.

In another decade, the BP/W will be the standard for recreational scuba. Right now, the BP/W is THE standard for all technical diving.

Basically the BP/W is just a metal plate rigged with a harness that attaches to you tank. Here is an example of a backplate with double steel 130s (the wing is omitted):

Credit: Sierra Ledge Rat

The "wing" is a bladder that is sandwiched between the BP and tank. You can buy different size wings for different situations. I have a wing with 27 pounds of lift for single-tank recreational diving, a 40# wing for aluminum doubles and a 55# wing for steel doubles. Here is another photos showing the BP/W with doubles:

A 40# wing mounted to twin aluminum 80s
A 40# wing mounted to twin aluminum 80s
Credit: Sierra Ledge Rat

Finally, here is a photo of me with a single tank with a BP/W. You can see how it's all very clean and streamlined.

SLR on the Great Barrier Reef, Australia
SLR on the Great Barrier Reef, Australia
Credit: Sierra Ledge Rat

Here is a front view of one of my cave diving buddies - you can see how clean you are in front. You don't have all that clutter up front like you do with a jacket BC. Your "octopus" is suspended on a bungee necklace right under your chin, where you can always find it. (The Hogarthian philosophy is to donate the regulator in your mouth to an out-of-air diver, and then you go to your backup regulator on the necklace.)

We use a "long hose" (the yellow hose in the photo below) for the primary regulator - the extra length makes sharing air a lot easier. In cave diving you have to have a long hose so that you can pass single-file through tight restrictions while still sharing air.

Primary regulator is on a 7-foot yellow hose. &#40;I use a black hose....
Primary regulator is on a 7-foot yellow hose. (I use a black hose.) The backup regulator is on a bungee around the neck.
Credit: Sierra Ledge Rat

About cumputers - Nowadays a lot of dive boats require the use of a computer for "safety." Just get something simple that also has a Nitrox function. I like Suuntos because I prefer Sunnto's Reduced Gradient Bubble Model (RGBM) for the computations. Gives you Haldane calculations when you're shawllow and RGBM model calculations when you're deep. Best of both worlds.

I do not use a computer for technical and decompression diving - I use the old Navy tables. Plan your dive, dive your plan.

Viva la Scuba!
One of my early cave diving photographs
One of my early cave diving photographs
Credit: Sierra Ledge Rat

Souces for BP/W gear:


My favorite is Halcyon
Halcyon, the "Patagucci" of technical scuba

I have a full dive shop/compressor in my garage. I can mix any kind of dive gas (Nitrox and Trimix), and I inspect and maintain all of my own gear/tanks. Any other questions? Just send me an e-mail.

Sierra Ledge Rat and his own private dive shop & compressor.
Sierra Ledge Rat and his own private dive shop & compressor.
Credit: Sierra Ledge Rat


Jan 26, 2013 - 04:15pm PT
That's awesome! Your own compressor that can make any mix simply blows the mind! I know of guys that have compressors on boats but they all do regular air.

Sierra Ledge Rat

Mountain climber
Old and Broken Down in Appalachia
Jan 26, 2013 - 04:22pm PT
The compressor only spits out compressed air. I run the air through a serious of purifiers and filters so that it meets OC (oxygen compatibility) standards. Then I can do partial-pressure blending to mix any kind of gas.

I also have the option of titrating a small amount of oxygen into the compressor inlet to do continuous blends that contain a maximum of 40% oxygen. I have oxygen sensors at the compressor inlet to monitor the intake.
John Duffield

Mountain climber
New York
Jan 26, 2013 - 05:00pm PT
wow! cool!!

I too like the setup above. I also keep my Primary on a loop around the neck and the Octo on a 2 meter hose. Many jackets have the air sharing built in, in a real situation, you;d be so close all you can go is go straight up. With a tech rig like that, you have more options. Nice, when things are coming unwrapped inside a wreck.

I will get with a backplate next time. I've rented them, you can get the doubles on, the weights get bolted in between the plate and the tank. Of course ditching a weight belt is for n00bs. lol


Trad climber
Jan 26, 2013 - 07:17pm PT
There is some high end cave diving exploration to be done up here.
Castlegard is one of the longest systems around and an 800m long sump has been dived but not till the end.
I am not into cave diving but have done cenote diving in Mexico.

Mountain climber
San Diego
Jan 26, 2013 - 07:44pm PT
One of my all-time favorite books ...

I know diving can be really stressful, especially if you're cavern diving etc., but I find diving incredibly relaxing. Climbing and flying paragliders I'm way more amped.

I've been diving off and on since 1977 since HS, advanced NASDS openwater certified at Poway HS through The Diving Locker here in San Diego, with the Nicklin family. I miss the big Underwater Photography Society (UPS) shows they used to have at the San Diego Civic Center every year. Michael Cousteau was Master of ceremonies one year. Now I mostly free-dive just because its faster and less equipment.

However, I did take my kids 12 and 10 on a free "Discover Diving" class at the Sports Chalet recently. They loved it. They love snorkeling and free diving. Apparently you can now get certified at the very young age of 10, with parent approval and level of maturity considered.

I don't own a computer, I still use the tables. Old school. However, resort diving, the wife and I stuck to couples near our size and stature that had computers. According to the tables we would have been bent and not had as much bottom time.

I've spent week after week commercial diving surveying San Diego Bay and Mission Bay for Eelgrass beds and then replanting Eeelgrass projects while working in environmental consulting. Talk about endless bottom time. The things you'll do just to alleviate the boredom (but can't say).

Cenote diving in the Yucatan is awesome! Experienced that on my honeymoon. Love Cozumel and Hawaii.

I probably should take a refresher course and learn the computers and mixed gas diving. It would be cool. I think diving is something that a person can do well into their late years just like Cousteau did.

Again I find it really relaxing (unless a white ever comes by). Then again there is The Shark Shield. http://www.sharkshield.com/

SLR, very impressive set up you have. Incredible.

Trad climber
The state of confusion
Jan 26, 2013 - 08:08pm PT

Nature's gunna be fishin' for sushi. . .

hee hee hee. . .

Trad climber
AKA Dwain, from Apple Valley, Ca. and Vegas!
Jan 27, 2013 - 12:21am PT
""I'm pretty sure Locker doesn't Scuba Dive."...

Sort of true...

Sort of not...

My Cousin some many years back stuck his weight belt (he outweighed me by about 100lbs) and tank on yours truly, then pushed me off the boat...

I sunk to the bottom (about 25ft) and couldn't fuking breath through that piece of sh!t worth a fuk...

So I spit it out and then TRIED like hell to swim to the surface quickly discovering that the weight of the belt held me down...

Before I DROWNED, my cousin jumped in and pulled me to the surface with a HUGE apoplogy (I was only 14, he was in his 30's. Not the most responsible cousin... LOL!!!)...

So you see...

I DO have SOME "scuba diving" experience..."

More like DROWNING experience.

If you have to drop your tanks, does the BC drop with it?

Nature; I still think computers can go on the blink, and using the
Dive tables as long as you follow them, are more reliable and safe.

Maybe the comps have gotten better, but back in the 70s when they first came out, there was more decomp sickness cases for the Divers
that were using them than divers using the tables.
bit'er ol' guy

the past
Jan 27, 2013 - 12:46am PT


Boulder climber
I'm James Brown, Bi-atch!
Jan 27, 2013 - 12:46am PT
computer is just the dive shop squeezing money from people who put the gear in their closet for 20 years, which is 90 percent of the class.

hard to get into trouble with a 80 cu ft tank unless you do a bounce dive to 300 ft at monestary beach and get narced out.

i like scubapro jet fins and dacor big barrel snorkels,

regular back-pac

had a 400 dollar zeagle but someone stole it,

too much prep to dive with that thing,

like old school bac pac and may west with standardf weight belt,

shot belts are a pain, so skip those. they rust.

charlie brown was the instructor from divers dock sunnyvale.

ken down in mt view was the comp with the indoor pool.

charlie hid behind a rock while free diving and stuck a ling cod with his knife as it passed his view.

also drank coors underwater. great example for safety.

we used to take shrooms and lay on the bottom at carmel river beach.

just watch the fish swim overhead and the kelp weaver back and forth with the tide, tank lasts way long when you don't move,

we drove to cannery row in our wetsuits in a GTO convertible to get free refills, with the top down of course, people were gawkin, we were lit up,


Social climber
Hercules, CA
Jan 27, 2013 - 01:31am PT

Looks like there are lots of folks out there who dive more technical than me. I'm just a guy who started diving again because we were in SE Asia. Hell, if you don't dive in the Philippines, you're missing a great opportunity.
You see the coolest animals in the tropics! &lt;ribbon eel&gt;
You see the coolest animals in the tropics! <ribbon eel>
Credit: Phil_B

I'm only a Nitrox Advanced diver. Would like to get a cert that allows me to pierce wrecks in places other than the Philippines.
John Duffield

Mountain climber
New York
Jan 27, 2013 - 05:20am PT
+ 1 to Philippines. Lots of wildlife, lots of wrecks. Even a Spanish-American War vintage US Battleship. The USS NEW YORK.

I particularly like the wrecks of vintage 1860 - 1880. It's early mechanical, the old guys were still sorting out how to do arrange engines and propulsion machinery. Really incredible. I saw one, the engine was forward, the shaft was nearly the length of the ship.

Though my best wreck was a German WWII destroyer North of Scotland. That was amazing.

Here's part of one I lensed off Bermuda. The MARIE CELESTE sunk around 1864. A Paddle Wheel Blockade Runner.

Standing Paddle Wheel
Standing Paddle Wheel
Credit: John Duffield
Messages 41 - 60 of total 104 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
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