Hi Alec,
It was called a joiner Reducing 19mm x 13mm.
It's plastic, & I chopped bits off both ends
& sanded slightly to fit.
Part of a garden watering system found in the local
hardware store.
Only a few cents. Frank would have been proud of
me.
The flashlight has 3 modes, full, medium &
strobe. You cycle through by turning
the power on & off, however it seems to reset
after a short period of being off &
then always turns on in full mode.
Alan
----- Original Message -----
Sent: Thursday, September 22, 2011 10:31
AM
Subject: RE: [PSUBS-MAILIST] instant dive
light
Wow, that is remarkable. May I ask what the piece is that
you screwed into the flashlight head? The one between the flashlight and the
stainless nipple.
Thanks,
Alec
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Well done Brian,
reference to how much pressure your bulbs could
take, but it's packed away somewhere.
Modifying one of these existing lights seems
easier & cheaper.
The flash light I gave the link to, I was
intending for submarine use. If simply modified for
diving, the switch being a"push in" type would possibly turn itself on under pressure
or not be
able to be plunged if you got all the air
out.
Regards Alan
----- Original Message -----
Sent: Wednesday, September 21, 2011
8:41 AM
Subject: Re: [PSUBS-MAILIST] instant
dive light
Hi Alan,
Just got back from the harbor, succsess !! I dropped it down to around
35' with the light on everything seemed fine. It was difficult
filling it totally with no air bubbles, I had one tiny one. I may try
to put some silicone on the O rings to keep any min oil from leeking
by. The next time I fill it I'm going to do it in a min oil
bath so I can submerge the entire light in the oil to get all the air
out. Those xenon bulbs are apparently pressurized, not sure if that
makes a difference. don't know how much pressure, probably not
much.
I would like to make an led light as well.
Brian
On Tue, Sep 20, 2011 at 11:37 AM, Alan James
<alanjames@xtra.co.nz> wrote:
Hi Brian,
I got part way through making some LED dive
lights by modifying some $20- lights I bought off "Deal
Extreme".
900 lumen & free freight. They operate
off around 4 volts, so I'm going to link them in 3s to operate off 12
volts. They have O rings at every join
& are made of a fairly thick aluminum. I
cut the body down & pushed a hose fitting in the end, then
soldered in wiring & put on a tube, ready to oil
compensate. The LEDs in general take
tremendous pressure, I believe a similar oil compensated system went down
10 kilometers.
Regards Alan
----- Original
Message -----
Sent:
Wednesday, September 21, 2011 3:30 AM
Subject:
[PSUBS-MAILIST] instant dive light
HI All,
I was pricing dive lights for the upcoming lobster season and was
floored by the outragous prices they charge for those things. So I
decided to take my 6 cell mag light, which has a xenon bulb in it, and
fill the entire thing full of mineral oil. The mag lights have O
rings at all the critical points of seperation of the different segments
of the light. I'm going to be dropping it down to 40' today to see
if the bulb can take the pressure. If not then I'll most likely go
to an LED mag light.
Brian