Sold/Expired Feeler: Fully potted & heatsinked 1.4A XP-G R5 P60 Dropin ~ 445 Lumens

Sales thread here:
https://www.candlepowerforums.com/threads/261801

Getting a feeler for these. I'm making a couple locally for some fellow EMS workers, and want to gauge interest here.
Price would be $45 shipped, avail possibly end of this month.

Features:

- P60 Dropin
- Solid copper Cu110 slug thermally attached to base
- Reflector is thermally bonded to dropin base
- Electronics and emitter leads are fully potted with thermally conductive compound
- Inner spring is epoxy bonded to driver board
- Powering an XP-G R5 emitter by a 1.4A, Single stage 7135 board
- 6V max input, runs most efficiently with 1x Li-ion (2x123 can be used with an increase in heat)
- .45" wide 8mil copper strip included for maximum heat transfer from dropin to host body.



At 1.4A the R5 should net around ~445 emitter lumens.
MrGman and bigchelis confirmed the R4 variant had 306 OTF lumens & 287 lumens after 3 mins!
R5's should net ~320 OTF.
https://www.candlepowerforums.com/threads/229135


I currently have a module built utilizing an R4 (~420 lumens @ 1.4A), but future builds will be using an R5 emitter.
Doing some simple runtime tests using a multimeter I came up with the following (May vary with LED Vf & battery):
Tailcap draw on a fresh Trustfire 2400mah 18650 is 1.39A

:05 min - 4.12v - 1.35A
:10 min - 4.07v - 1.36A
:15 min - 4.04v - 1.36A
:25 min - 3.96v - 1.37A
:35 min - 3.89v - 1.37A
:45 min - 3.82v - 1.37A
:55 min - 3.78v - 1.32A
:65 min - 3.75v - 1.26A
:75 min - 3.72v - 1.26A
:85 min - 3.70v - 1.22A
:95 min - 3.64v - 1.20A


At this point I ran out of time, but the light was still running strong. I'd estimate the runtime to be a little under 2hrs with an 18650.
Although the 7135 board runs better with an 18650, 2x123 can be used with an increase in heat. I wouldn't run the dropin with 2x123 for extended amounts of time; in my testing the 123 cells were quite warm after 15min runs. With an 18650, the light gets warm in the hand after a while but not blazing hot. I would not recommend running this in anything less than a full metal bodied flashlight.

Slug size comparison:



Completed module:





Initial tailcap draw:




Beamshots:

Left: Nitecore Extreme Q5, Right: XP-G R4 Dropin, Solarforce L2 host

10ft away from wall:








12" from wall









The dropin is a mix between throw and flood, testing outside I found that the dropin throws a bit further with a brighter hotspot than the Nitecore & lit up a much wider area. You can see in the beamshots how much area it lights up. I'll try to get some outdoor beamshots later.

So, any interest?

Any way to make it a 3-speed? If so, I'd be interested.

Currently I can't seem to find any good 1.4a 3mode boards, I might offer it if I come across one though.

Im definitely interested. Looks like it is well regulated. How many out the front lumens? If it is 300 or above, I want one.

Assuming 20-25% losses, it theoretically comes out to be 333-365 OTF.. I'm going to PM MrGman and see if he can test one of the dropins.

Anto said:

Assuming 20-25% losses, it theoretically comes out to be 333-365 OTF.. I'm going to PM MrGman and see if he can test one of the dropins.

Click to expand...

I would be in for one of those for sure, but 300 confirmed OTF might be possible for how long will those lumens stay above 300 would be interesting. I say 300 OTF for more than 2 minutes will be the challenge with 1.4A

This is true, not counting heat losses it will be slightly lower. Thrunite's XPG dropin, rated at 345 lumens comes in at 260 lumens initially, 251 after 1 min.
I got a PM back from MrGman, he can't test it due to a move :|.

I'm interested in one. Thanks.

Go ahead and put me down for one. Quick question. How do you think this drop in wold perform with a single AW18500 cell? Im thinking about a fivemega single 18500 body host for this drop in unless it want be able to run regulated at full power.

Using an 18500, runtime should be roughly an hour.

I am interested.

I'll keep an eye out here for further developments first.

i am interested. put me on the list for one ;-)

Depending on your timeframe and runtimes... I am tentatively in for one

Q: it will run an 18650 cell, right?

I'm interested in this one!
I will keep an eye on this

Michael

Alberta-Blue said:

Depending on your timeframe and runtimes... I am tentatively in for one

Q: it will run an 18650 cell, right?

Click to expand...

The 1.4A driver he uses is rated from 3V~6V, but runs at its best at 4.2v. So, yes 1 18650 is ideal. For emergencies 2 cr123 primaries can be used for short
periods.


EDIT: I just ran my E1b bezel which has this driver and with one AW 17670 I get 1.43A at the tail. With 2 primaries I get 1.34A at the tail and it gets warm just by me testing the current.

I have these drivers in several of my lights and I reduce the current myself simply by using laptop cells vs. IMR cells or 1.1A vs. 1.43A respectively.

bigC

I am in for at least one.

can I buy the one you show here?

Wondering when the R5 will be available

It is R5!

Put me down for one, too.