sucnip
Newly Enlightened
Has anyone considered using a cheap Chinese bike light as a canister light head? Would need a new lens and fill a couple of holes... Would it work??
How much cost cheab china biking light and how much cost cheap china diving light ?
Diving light is ''at least supposed to be'' waterproof at depth.
This may be a usefull starting point for such a project.
http://www.ebay.co.uk/itm/310653726309?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
Having just bought one of these with the intention of making a canister light.....i can confirm they would be a good starting point...
brighter than a 10W HID.....
Although......seeing as the burn time is around 2-3 hrs with a 26650....and they are a tiny little unit....
i am no longer going to bother...
If this one survives for a while - i'll buy another, to get 4-6 hours total burn time, and not have to carry or maintain an expensive canlight....
I have also ordered one, not received it yet but I have an old HID umbilicle setup laying around with a good battery pack, my plan is to use this head, put a gland on the rear screw cap and connect the battery pack to it. I do not know if this is feasable though, these run on 3.7 volts and my battery pack is rated at 11.8 volts, will I just burn the emitter and/or circuitry out?
You have to be careful comparing apples to pears. Your 3S3P AA pack would have nominally 24.75 Wh, while the 26650 is nominally 14.8. A good portion of the 3 hours from the 26650 is probably at substantially reduced brightness, while you calculated your burn time at full brightness. Not really the same thing.
I dive CCR and dive a lot of wrecks, my run times can be 2 to 2.5 hours on occasions so I am looking to get long burn times out of my light.
If my 11.7 volt battery pack will fry this lamp is there anything I can do to prevent this like putting resistors in the power supply or connecting a voltage reg. somewhere in there?????