I hope you didn’t get the F-20 from T-mart. I ordered F-20 from T-mart when OLD4570 posted the mod thread and they sent me a single mode direct drive F-20 so I sent it back and they sent me another single mode F-20 so I sent it back and gave up on the whole idea until CNQ offered the bare host.
Yep I did! As I looked around it seemed kind of hit or miss on getting a 3 mode or 5 mode. Tmart listed as a single mode, but there is a review (FWIW) stating they received a five mode. Guess I'll take the chance. I also ordered a couple of the 50% off U2's from Illumination Supply, but then wondered if I should have tried out a Nichia 219.
I agree I end up using the Ultrafire AA with the Nichia 219 more than I do the one with the 3C XML. It’s nice because the color rendition is so much better and I don’t have to worry about leaving the Nichia on high and overheating it like the XML driven at 2.8 amps would. I will say the XML driven at 1.4 amps puts out quite a bit more light especially flood than the Nichia driven the same.
I just finished the last UF-2100 and I have a bunch of drop ins to make before I have time to start experimenting with the AA light project, but I will keep everyone updated with a new thread when I start making some of the AA lights.
Yes, another brand. The nichia 219 (available at Illumination Supply) is touted as a great "high CRI" LED (i.e. very good at accurately rendering colors). See thread here. I think someone posted an outstanding color rending photo between the nichia and other Cree tints.