The Small Sun "5W" does not have interchangeable parts with a real C3. Just tried some C3 bodies and tailcaps with the clone extension and tailcap. They sorta, kinda fit but the thread pitch on the real C3 is much finer. However the extension works just fine on the Powerlight
And the BLF DeLight. That is one of the shorter, earlier DeLights with the tailcap from the Powerlight which works just fine. This is the one with the too short tailcap that works fine with the tailcap off the MDXL and the MDXL works just fine with the tailcap from this DeLight.
Here's the original Small Sun with its extension tube. The finish on the extension is very different from the much glossier tailcap and body.
Here's the LED - yet another unknown. This one would undoubtedly vapourise if anything even close to 5W went through it - the one on the Powerlight has six bond wires, this appears to have only two and those are the limiting factors for current into the LED. Most white LEDs have a forward voltage in the 3.2-3.6V range. Even assuming the higher end of that range 5W = 3.6V x ?A.
Rearranging Power = current x voltage we get power/voltage = current or 5/3.6 = 1.39A. Asuming a perfectly efficient conversion from the 1.2ish volts of the cell to 3.6 that would imply 4.2A out of the cell.
Aye. Right!
1.4A through those hair-fine wires just isn't happening.
The other end of the head isn't all that pretty. A rather poor blob of solder isn't as nice as a spring. It is probably more durable than the bent bit of wire in the MDXL though.
The tailcap is the same as all the other ultra-budget lights. And appears to be interchangeable with all of them.
Single AA configuration
2AA configuration
The beam is a nice colour on my one.
That's the Small Sun "5W", the Powerlight and the DeLight
Better exposed when I remembered to stop the flash from firing.
Of those three, I like the beam colour of the C3 clone best. I like it a lot more than the MDXL. It is very well worth the extra 45 cents over the MDXL and allows all these ultra-budget lights to use 2AA if you want them to. I did rather worry the next patient into the office when he saw me crawling out from under my desk with camera in hand. But then I work in a psychiatric hospital and strange is what the customers are used to - just not usually from the staff....
Since I got carried away taking pics, here's my favourite Lego shot.
Measurements to follow - but at present, because of the versatility, I think this may actually be worth 4x as much as the DeLight. As you may have guessed, I like it.