It is still quite a financial risk having ledboards made, the MRQ is usually in the hundreds so you must have reasonable confidence that you get that many sold. I have no idea what the size is of l4p’s flashlight undertaking (not huge I guess) but I’m already (pleasantly) surprised that he had a 16mm 4040 board made.
Speaking of 16mm 4040 DTP, they are out of stock now; I have plans for 20mm version and few other pcbs, but as djozz said, start cost is high and you don't know how well they will sell.
Hi, there is any option for use the Luxeon V with the ld-a4 driver in convoy s3 host?
for example the vf of the Luxeon V at 6A is aprox 3,35v so… (4,2-3,35) *6 = 5,1w.
So, its out of the maximun that driver can support (acording to datasheet).
i see the aluminium piece for the s2+ but i don´t like that the s2+ has pill and a very wide retaining ring (that would be problematic with this driver).
So… any options for built a luxeon V flashlight with this driver in safe limits?
Put a cube will be enought?
I think that runing DD will works (not driver heat) but thats probably produce 8-9 amps and thats too much heat for the small host… so its desirable to limit to 6 or lower amps in my opinion.
Thanks 
I have thin retaining rings compatible with S2/S2+ etc.
Best solution would be thermal kit similar to S2+ thermal kit,or at least approximation.
Silicone cubes may work if you don't bypass springs and use 10Amp discharge batteries.
Very nice to see that I will buy 2 pieces for use with LD-A4 thermal enhancement kit for Convoy S2+ and the Luxeon V.
Do you have any picture?
The rings is equal but less wide?
Yes, thermal kit would be the best, thats for sure. If the thin retaining of kiriba-ru works well i will go for the s2+ with the thermal kit.
BTW thermal adhesive (artic alumina) works for glue the aluminum to pill ? or this change the measures?
You dont see attached images in my previous post?
Thermal sheets are not adhesive, their purpose is to fill small air gaps between contact surfaces.
Total thickness is such that everything fits tightly into host for best thermal transfer.
yes, i see the images. I think that the images was of other diametter.
Its the same ring as the s2+?
I understand you. I think that i formulated the wrong question :person_facepalming:
My question is if i can use thermal adhesive (Arctic Alumina™ Thermal Adhesive) instead of the sheet?
hahaha my english It’s not too good
This is regular 18mm rings that can fit convoy S series.
ok, thanks for the aclaration.
Look a bit tall, so i don´t know if will work good. In the images looks like at least 2x tall of the regular ring but I may be wrong.
Do you have any info for that?
Inner hole is 16mm.
As you can understand there is not enough place to make holes (similar to the stock ring) for unscrewing, so they are changed with milled cuts.
Also, stock ring height is not enough for such cuts, thats why custom rings are taller.
Ring height is 3mm.
Ring OD is less than 18mm. So it can easily enter any 18650 battery tube.
The only issue (contacting cell outer heatshrink/isolator) may be met if you dont use positive (driver) spring.
Hi,
great explanation, i undertand you. So, if i undertand correct there is no problem at all because the driver ring don´t touch with the 18650 tube, so the flahslight screw in normally.
Time for some gift coupons:
first two BLF members who correctly answer to question: how many LEDs and which size there are on ILC-0, will receive 6€ led4power store coupon valid for ILC-0 or ILC-1 purchase (valid for 14days).
Generous! I think I know that, but since I can make my own illuminated tailboards I want someone else to win this 
4 leds,
size 0603
smaller I think
1—- 4 leds
2—- size 0603
Ok, that was easy,next time questions will be a little bit harder:)
Correct answer is 4 LEDs, 0603 size, so Sirius9 and alberto7 won 6€ coupon for Illuminated switches product category - congrats!
Please register on led4power.com if you don't have account, and send me your usermane/mail on PM.