My understanding is that this light is negatively bouyant. As I am trying to attach this to my speargun, would it be correct to assume it will add almost 16Oz of negative bouyancy at the end of the barrel? (i.e. making the nose of the gun sink heavily)? Its very important for me in selecting this or another light.
SANFORD A Why not mount the light further back from the front of the spear gun? Also, consider the fact that this IS the brightlest light on the market at the lightest weight. This light has replaced my UK Light Cannon, which does weigh considerably more. If you can hold on to a heavy gun, you can support a necessary tool weighing less than 16 oz.
Arsen K Thank you very much all for the replies.
In case anyone is looking to purchase this light for the same purpose as me, I'll add the following:
I did some testing (yeah yeah... in the tub :D ) by taping a one pound lead weight to the end of the spear gun and it does not feel all that bad underwater. It does take more strain to hold the gun level but its not too crazy. Seeing as how this was done in fresh water, I did a quick calculation using salt water density and the volume of the flashlight. In sea water it should only weigh 0.53 lb which is not too bad. I tested it further by attaching my 5mm neoprene glove to the barrel and it made it neutrally buoyant. So a piece of neoprene should make it almost weightless underwater.
JAMIE W With my experience in using this light it is deffinately negatively bouyant. To answer your question with my best guess, yes, yes it would be like adding lead to the end of your gun. When I have the light attached to my BC it hangs straight down.
DAN H Yes, this light will add some weight as it is negatively bouyant. However saltwaters effect will negate some of that weight, how much I'm not sure. I've used the light several times and have been very pleased with the beam pattern (nice and narrow) and excellent penetration.
CHRIS P Yes it does sink however unless you want your gun to float it will not be that big of an issue I have had the original aL4 since 91 when I started spear fishing I recently bought this one for my wife, We use them for looking under rocks and brushpiles for catfish in lake ouchita,you simply can't beat the eled for its brightness and its very durable, but as far as weight you should not have any problems you probly won't even notice.We actually plan on purchasing two more in the future.