Oxy Cheq Little Johnson Dive Light

[deliverykfc]

Has anyone used them ?

opnions ?

 

[ABQdiver]

All is fine so far. The light is sturdy and well built. The light isn't really bright, but it is made for a backup, not primary. The double o-ring is a nice feature and its less than the Halcyon light. I have never taken a Halcyon apart, but the two can't be that much different.

Look on COVCI for the best price.

 

[Birdman]

Another possibility is Divelightman on Ebay. $65.00 for a scout(-like) light.

 

[deliverykfc]

Anyone knows the Little Johnson Technical specs ?

what is the powerof the beam , bulb wattage and burn time ?

 

[jonnythan]

deliverykfc once bubbled...
Anyone knows the Little Johnson Technical specs ?

what is the powerof the beam , bulb wattage and burn time ?

The bulb is the 5.5 watt 6 volt bulb from the Underwater Kinetics SL4 dive light. It's driven by 4.5 volts, so that should give you just over 4 watts of light.

It's the same system as the Halcyon Scout, and they claim a 4.5 to 5 hour burn time.

 

[Charlie99]

jonnythan once bubbled...
The bulb is the 5.5 watt 6 volt bulb from the Underwater Kinetics SL4 dive light. It's driven by 4.5 volts, so that should give you just over 4 watts of light.

It's the same system as the Halcyon Scout, and they claim a 4.5 to 5 hour burn time.

Looking at a typical nomograph for voltage vs. light vs. current vs life give the following values for running at 75% of nominal

current: 85% (so power is 3.5watts)
light output: 38% of nominal
life: 30 times increase

The light output of a tungsten bulb dramatically drops with voltage reduction as the filament temperature cools.


Make sure that it has enough light for your intended purpose.

 

[Scubaroo]

Charlie99 once bubbled...
Make sure that it has enough light for your intended purpose.

These lights are designed to be a backup light, and the need for reliability overrides the need for brightness. They're not designed to be used as a primary night.

 

[Abyzz]

You will kick them if you've seen the brightness of the MAL-Lighting µHLD1 backup torch!
Abyzz