I doubt that (but I do not have one to check), the bad beam of the red C01 seems to me not caused by the reflector. I think it is because the light emitting area of the red led is much smaller than a white led because it has no wide phosfor layer. And small light sources need carefully manufactured optics to make a good beam, the top surface of a cheap chinese 5mm led is likely far from optical quality, or even 5mm Nichia leds.
Thanks djozz, I might try it tomorrow before I Scotch-Brite the led. Just to see if it helps.
Djozz, thanks for this, this will be a great little backup light for hiking, starts high and keeps it pretty good for 4-6 hours, that is what I was looking for. Much appreciated.
Measured up to 7.5 hours now, time to go to bed. Will have another look tomorrow if there is still light, I assume that just as the unmodded C01 it will drain the battery to completely empty. The runtime chart sofar:
Hmm…no regulation without a sense resistor to regulate. I guess I should have seen that coming.
I assume with something in between, like a 10 ohm resistor, we’d see in the ballpark of 12-14 lumens steady for maybe 2 hours or so, then the long decline.
Another datapoint, 14 hrs / 0.6 lumen.
Yes, no regulation, I already noticed that without resistor it does not light, it is simply is series with the led somewhere I guess (before or after boosting?, no idea how that works really).
I’m not fanatic in constant output, a steady decline is useful, like the incan days, there is not so much that demands steady brightness and a slowly fading light does not leave you with surprises.
I had ruined one black C01 while finding out about the potting. So it was spare for some fun. 
(did this to a sk68 too a couple of years ago)
LOL it`s even cut one of the Vias in half! 
That is one awesome pic! 
Well done. You can’t deny the potting crew did a good job on that one.
BTW I downloaded a copy of the SK68 picture for “recreational use”, I can’t help smiling.
Yes, that one was the best ever because of the irregularities and moving parts in the design
Looks like you could shorten the light by trimming/sanding the head and “reflector” shorter too.
Great pics and RIP C01 used for testing…
All hail the “in the name of flashlight science” !!! 
Thanks djozz, that’s an awesome photo and cut!!!
Neat, a physical cross-section of a light is way cooler than any CAD diagram!
Two more datapoints: 14hrs 0.6lumen, 24hrs 0.1lumen. I call this test a day Battery voltage is 0.57V now.
Wow, this looks nice. One unsuspecting question: is such a test available for the stock Sophia LED C01 as well?
Just in case anyone had any doubt remaining about whether there is an O-ring around the LED!
In fact, this shows it is better installed that I expected - there is a full groove for the O-ring. On the Sunwayman R01A, it is merely held in place in a shallow counterbore by the flange at the base of the emitter.
Great idea for the dead light, and nice work cleaning it up. I really like cutaways, even when it’s a simple item. There’s even a museum in my area that has an entire tank cut in half like this. I spent probably close to an hour studying it last time I was there.
Also, since I looked it up, here’s the SK68 cutaway post:
I think that someone did that for the Yuji led version, maybe even me :person_facepalming: but it is probably buried in this long thread somewhere, and this Sophia version will not be miles different. Think the same curve as above but starting at 7 lumen, less fast decline and stretching out to over 40 hours.
Thanks, sounds very reasonable.
The cross section is funny and inspiring as well