Data(Offline)

that is the question.
since I want to take tech 1 next year, I know I will need a primary light.
Am I right to say it has to be a light in a goodman handle with an umbilical cord to a canister or could it be a light in a goodman handle and that's it? no umbilical cord and no canister.
I see that many manufacturers are leaning toward LED these days, simply because it is the future of light bulbs.
what I'm surprised about is the fact that in this dive industries we used those outdated led-acid batteries forever and now think we have the greatest by using nimh batteries.
the fact is in other hobbies for years they use the second generation of lipo batteries which are light years ahead of nimh.
now combine LED lights with a lipo battery and you get the size of a regular light head that combines the equivalent of 10W - 4 hour burn time in just the light head itself.
there is no umbilical cord and no canister = less possible failure points.
the light exists and I have seen it, the question is: will it be accepted for DIR style diving.
I like this answered by DIR tech instructors who could also give me a reason why it should not be accepted.
thank you

JohnKendall(Offline)

Hi Data,

Please post an intro in the introductions forum.

As to the light. As I understand it, LED and HID are approximately the same efficiency as each other, however you can get higher power HIDs. I've certainly not seen a single LED source with and output even nearly that of a 10w HID. You need a focused beam for signalling, and I've not seen a multi LED unit that you can focus. However if you have a unit that does, then I'd be very interested in seeing it. The only reason I would think that the umbilical is prefered is that it keeps your Lamp head attached to you, however I don't know this is a particular requirement.

J

Seydlitz(Offline)

I must be in the dark ages...As I have a Pro 14 18W with SLA batteries
Long burn times ..ditchable weight,,flood a canister cheap to replace them ..packs easy to make ,were Iam I going wrong!!!!please help me

Andy

PS And theres f*ck all wrong with my Spectrum computer either!!!

JohnKendall(Offline)

Dark Ages? Nah, You'll get loads of light for ages out of one of them Well I do out of mine anyway.

J

Data(Offline)

could we please leave this on topic?
I don't want this thread to turn into a "this light is better than that light" or a "my works fine, why should I change it" debate.

just think of it as having your primary light on your goodman handle, but without the canister and umbilical cord, is this DIR accepted for tech 1?

btw john, I posted the intro.
and I'm not the one who makes this light, I saw it at a tech show in palm beach this weekend.

Seydlitz(Offline)

Mr Data .....It was probably my tongue in cheek humour that threw you..I don,t care what light you have ...the point i was trying to make was ...as most things in life ...you shouldn't discount something as old technology...Nasa designing a pen that writes in space spending mucho dollars doing it and the russians used a pencil ...get my drift..as in my case SLA as things have a habit of turning full circle and become vogue again

Andy

lamont(Offline)

What happens to lipo batteries if they're flooded with saltwater? If they behave like lithium metal, i'd prefer to not dive with them...

EDIT: found this statement on a page on lipo batteries: "The lithium in a Li-Poly cell is hazardous and will react violently with water. Under no circumstances should the cell be punctured or exposed to water." Doesn't sound like a very scuba-friendly technology...

Data(Offline)

I guess this post just shows the nature of the beast, how the internet works.

I thought I asked a simple question and asked to have it answered by a DIR instructor who would know.
nowhere did I asked about anyones opinion about batteries nor the opinion about umbilical cords and canisters.

last try:
could a DIR tech 1 instructor please answer my question?
can I take the tech 1 class with a primary light on a goodman handle without the umbilical cord and without the canister?
if no, why?

thank you

EBT(Offline)

If all you want is an answer from a tech1 instructor and no-one else is allowed to comment, why ask it in a public area like this?

You'll get a much faster answer (I suspect) by picking up the telephone to a tech1 instructor. Theres a few in florida, apparently.

ericfine50(Offline)

Data,

If you are asking if you can use a handheld light that you have fashioned a goodman handle to/for. I do not think so. The idea behind the canister light is for ease of use, ballast on your diving rig, light signals.

If you have to use both of your hands, where are you going to put your light?

BTW - People were trying to answer you question. If you wanted a T1 Instructor to answer it. Go to www.gue.com and find one on the Instructor list and E-mail that person. You never know, you may get the answer to your question from someone that asked the very same thing during their DIR-F or Tech Class.