Is it much brighter? Aren't they supposed to be 270lumen as they come from HK?
Well, according to the ebay ad "Output bright can come to above 270 lumens"
Note the use of "can" as mine was nowhere near that. Maybe it varies as I'm sure the two I had were not quite equal even before I did anything.
As a comparison it was somewhere between the 1st and 2nd setting of a Hope Vision One but with a wider spot and peripheral circle. A Vision One is supposed to be 240 lumens on it's highest (4th) setting.
Since my modification I've only checked it against the Hope indoors so I'll have to compare throw distance at the weekend, but just against the wall it now appears somewhere between Hopes 3rd and 4th setting. It still has a bigger spot and much wider peripheral circle (the Hope seems to be known for having a narrow beam)
The beam spot does have a slight crescent shadow on one side, i believe because the new LED protrudes further into the reflector and is not quite dead centre. Probably because I wasn't too anal about evenness when clipping down the LED star board. If I'd taken to time to file the star evenly I guess it wouldn't be there. It's not a big deal and the wider peripheral circle is totally smooth while the hope has a couple of rings.
Weight with 3 Duracell 1000mah rechargeable batteries is 106g on my kitchen scales - half the weight of the Hope so I reckon it's going to be easily light enough for helmet use.
As I said, I do need to compare to the Hope outside but it's certainly got a longer throw than it had before. It's now visible when I have my bar lights on while before it just drowned.