Well, I still want to have the ability to reflash so not sure if potting the backside maybe would do much?
Thanx! These zoomies have a terrible time to get rid of the heat. The 1504 and B158 shown both have SBT90.2's in them and both exhibit poor heat distribution - the head stays cool for a while and output drops quick. They both have relatively small brass pills so this light's 'shelf' is decent. Was debating to add much more copper since there's plenty of room.
Iām not sure the FET driver needs much thermal consideration, but if there were something to gain, I think it would be cool if you wired up the USB port to the MCU for external flashing. MikeC did something similar once I believe.
Hi, chris
The XHP 70 runs surprisingly long time before getting warm, so I did not try to mod for heat sinking. Also just kept the stock driver.
This one is too difficult to mod for heat problems because the led is not directly mounted to the outside of the flashlight.
Made the measurements and was able to swap in the glass 1504 lens.
Bezel Bezel Lens
Outer Opening Outer Bubble
Zanes X915: 67.0 62.0 65.5 61.0 mm
1504: 67.0 59.2 66.6 62.1 mm
With the glass lens, I measured 5.4 amps on a BT 35E at 4.18V: 650 kcd at 5m, so less than the stock plastic lens. It appears to be focused but there's some non-uniform artifacts around the hotspot.
Here's the tool I use to remove the bezel, using the flat ends (screwdriver type):
Business ends of the 3 modded zoomies:
Close-up of the Xanes with stock plastic:
Now with the 1504 glass, not much difference:
Wall shot with the glass lens. You cane see some of the odd patterns around the hot spot, more pronounced in real life:
With the 1504 SBT90.2, should have blacked out the reflective parts, believe it's the rim of the brass pill:
Nope, thatās the bad thing about this mod :zipper_mouth_face:
The driver I am using (from led4power) doesnāt have charging, so it doesnāt work :zipper_mouth_face:
I kept the driver, though, in case I want to reverse the mod, or in case I can build a charger with it! (not sure howā¦ :person_facepalming: )
The wife got this little light for me off of Ebay a year or so ago. Canāt remember for what occasion. The stock emitter was not really my thing. I had replaced it with something, LH351 of some sort I think. I like the little thing but itās not exactly a great EDC light. Well I had it apart for the second time swapping out the emitter yet again. This time to a lost but now found 219b. I had a few extra Reylight Pineapple AA pocket clips looking for a new home and what do you know, they fit the tail cap on that little light just perfect. Besides making it easier to carry, the clip also gives you something to hold onto while working the tail switch. Itās glass smooth and very slippery with even the driest of hands.
Nothing fancy other than that but, what a difference those two minor tweaks made.
After getting together the parts I needed I had a lot of trouble trying to get this lighted tail to function properly. After a lot of help from Mr gchart I got it working :partying_face:
Going from a press fit rubber boot to a retaining ring and battery indicator tail this light is on a whole new level now :sunglasses: