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  1. J

    Upgrade emitter on a light with a TIR optic?

    Sorry, no can do :( i took the emitter out months ago, then put the light in the drawer and left it there until now. I don't even know if I still have the original emitter...
  2. J

    Upgrade emitter on a light with a TIR optic?

    Yup, that's the plan :)
  3. J

    Upgrade emitter on a light with a TIR optic?

    Oh great, thanks :) I was concerned that the rear of the optic was dished to precisely receive the emitter, and that the resulting air gap with the smaller emitter would cause the optic not to work properly. Since I can be 90% sure it will work, I'll go ahead and order the emitter. If it...
  4. J

    Upgrade emitter on a light with a TIR optic?

    I just dug a MrLite MX4 out of a drawer. I put it away shortly after buying it, because I bought it intending to mod it, and was put off by the TIR optic. It had one of the older Cree emitters, I can't remember exactly which one, but one of the ones with a larger dome surrounded by a metal...
  5. J

    30's Eveready Mod...

    I like it so much that I'm going to keep my eye out for old flashlights :D Some of the older pocket lights would make good candidates for (slightly less powerful!) conversions too.
  6. J

    30's Eveready Mod...

    I'm not exaggerating when I say that this is by far the coolest flashlight I have ever seen. I love old stuff. I shave with a collection of old and antique razors, ranging from a 160 year old straight razor to several 'modern' ones from the '30s. I carry antique pocket knives, and use early...
  7. J

    Help! I need to build a LONG-burning flashlight, amd fast!

    That is an excellent idea! Too late now, but I'll try and pick ine up in time for hurricane season next year. i can't really afford to get a generator, but the ability to charge things would be great. Easy to adapt for charging usb devices too...
  8. J

    Help! I need to build a LONG-burning flashlight, amd fast!

    I've looked at my motley collection of 'scrap' electronics, and I can't find anything useful in the way of transistors. I'm pretty sure I already have a joule thief in a crappy 1xAA flashlight, so I'll keep that as a backup...
  9. J

    Help! I need to build a LONG-burning flashlight, amd fast!

    Throwies! Of course! if they can last for days on coin cells, I should have no longevity problems with bigger cells. As an experiment, I tried some C cells that I had (but don't have a flashlight for) and soldered directly to them. My 5mm led dribbles out a suitably pathetic amount of light...
  10. J

    Help! I need to build a LONG-burning flashlight, amd fast!

    (yes, that should say 'and fast', not 'amd fast', but the editor won't let me change the thread title...) I'm in NY (Long Island), and we appear to be in the path of hurricane Sandy... I have quite a few flashlights, but while preparing for the storm, I was horrified to discover that: A. I...
  11. J

    Red led + driver = malfunctioning modes?

    Sorry, I should have been more specific. The original light I tried it in was a 1xAA. The circuit does indeed have an inductor. The single mode driver I replaced it with also has an inductor and works perfectly, the problem was the modes on the original driver. The driver I'll be using in the...
  12. J

    Red led + driver = malfunctioning modes?

    I swapped the emitter of a DX light to a red Cree (XR-E I think) Despite the lower Vf, it works ok and doesn't seem to be overdriven, as the driver only puts out 350mA or so. Unfortunately, using the original driver gave some weird results. The driver is a standard Chinese one: hi-lo-disco...
  13. J

    Help me decide on a good balance

    I'm building an edc CR123 light. The driver I was thinking of using puts out 1050mA on high, and I'm now thinking that maybe that's a bit too high. I'm concerned about heat and drawing too much current from the single 16340 I intend to use. The other option is to use a driver that supplies...
  14. J

    OTF heat?

    I bought one of those MXDL 3W CR123 lights to play around with, and I swapped out the emitter for a cree Q3 I had laying around. My first impression was that it is insanely bright on a primary, easily my brightest flashlight. The light heats up during use, but not alarmingly so, just like...
  15. J

    Unexpected Power Boost!

    I just bought a Saik SA 105 off ebay. For the price I paid (~$7) I am very impressed. The machining seems very good, and as my first power LED light, I am impressed with the brightness. One thing I didn't like, however, was the color of the anodizing. It was advertised as grey, but in...
  16. J

    Before and After. (Anodized Finish Removal)

    Beautiful job! Might i respectfully suggest something? A more concentrated solution (drano granules work well) or a longer bath. No sanding should be necessary, if the finish stops coming off, add more naoh. The problem with sanding is that anodizing is very hard, sanding it off with abrasive...
  17. J

    What to Build in to an Emergency Light?

    How abut a simple built in radio? In an emergency situation, radio broadcasts might be your only way of finding out what's going on, and if it was built into the light, that would be one less thing to think about if you ended up having to lug it somewhere other than home.
  18. J

    Removing logo from flashlights body?

    Hi, I hope this response isn't too late to help you... The impression that I got from your description was that the white writing is screen printed onto the surface. If this is the case, the letters will feel raised above the surface if you run your fingernail over them. If they are indeed...
  19. J

    Maglite Parts Interchangeability?

    Hi guys, I'm new to the forums, but I've done a lot of reading and some of these mods are awesome! I have a question about a flashlight I'd like to build/buy: What I really want is a flashlight like a Maglite Solitaire, but with a longer 'handle' accommodating two AAA cells. Or, put another...

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