very nice… i always want to do this to one of my lights… maybe with Trustfire TR-J18 
thanks for the tip… 
how do you keep the spring to stay on the plate?
Thanks DayLighter.
I am waiting for your project 
I heated the spring and manage to stuck it on a RC servo plate I had , or else I was going to glue them together.
And after I glue and screw it with the aluminum plate.
Great project !
what we need now is some beam shots… preferably somewhere nice and dark place 
I thought that 2x18650 parallel holders didn’t exist. Where did you get them?
there’s a lot of those on ebay… i think i saw them on fasttech too
Couldn’t find one in parallel 
maybe this will work?
http://www.ebay.com/itm/18650-Battery-Holder-with-Cover-Parallel-/200864837974?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2ec47a3156
http://www.ebay.com/itm/18650-Battery-Holder-with-Cover-Parallel-/200864837974?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item2ec47a3156
http://www.ebay.com/itm/2x-Plastic-Battery-Storage-Case-Box-Holder-for-4-x-18650-Black-with-6-Wire-Lead-/310543423335?pt=LH_DefaultDomain_0&hash=item484dd49767
I found them at aliexpress
They say now 50 pieces , but at November you could order one holder for 2.55 $.
The only problem with this one is that’s very difficult to fit protected 18650 - with my Panasonic 3100 protected there is no way to fit them (bigger than others).
So for this project I use my Samsung 2800 unprotected
You will have to wait for that , we have a very cold weather and snow here in Greece - like in all Europe - but I will try soon.
But you will see the same beam shots like others reviewers - it’s always the same APEX , maybe a video will be more interesting.
Until my new APEX 5T6 BIKE LIGHT video is ready you can watch my older videos for two patents I’ve made , not for flashlights .
One is for making a waterproof-diving case for my small 808#16 HD camera with 1.5 euro.
I am using this camera with my hand made diving flashlight 3T6 2000 lumens
Some beam shots near my house , sorry for the quality but I don’t have a tripod for the camera.
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First one - road with just road lights
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Second one - car lights
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APEX 5T6 Bike light
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That Apex bike light absolutely kills your car headlights. Very impressive
Great work jlogres. It definitely would be useful in wide rural environments.
whoaa… gonna need to install some kind of top cover to kill the upper glare
Very impressive, I could do with one of those
Very good idea
It’s an impressive light for sure, but check the EXIF info on those pics,
Car light:
Auto exposure, Aperture-priority AE, 1 sec, f/2.8, ISO 160
Bike Light:
Auto exposure, Aperture-priority AE, 1 sec, f/2.8, ISO 320
Checked using http://regex.info/exif.cgi
The bike pic will look a lot brighter when you double the ISO like that. It’s still bloody impressive, just not as impressive as it first looks from those pics.
I took a lot of photos with different settings just to found a couple decent ones , its very difficult to take night photos without tripod.
As I said before it’s an APEX 5T6 and you can find a lot of beam shots for this flashlight everywhere - I am interesting to show you my patent not the flashlight and you can do it for any flashlight in the market .
Maybe I will do a better job with my video
hi again jlogres
if the info is correct in the exif files of your pics, your camera has a “M” (manual) mode
for good comparisons, i recommend you to set it to the same values for all pics (in this case f2.8, 1 sec) and i suppose you can manually set the iso, so set it E.g. to 160 (the lower, the less noise you will have) it´s better to adjust the exposure with the shutter speed for these kind of pictures, in fact it will be a better shot with a closer diaphragm, some like f8 or so, but you need to raise the shutter speed to 8s, to compensate)
so, for future pictures, my recommendation is to leave the camera steady over something (like your car for example), adjust it in manual to a correct exposure, and release the shutter using either the timer, or the remote control included with it (if you didn’t loose it )