Recent content by scottm

fenix-store
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    Good light for clubbing people?

    Those seem like fairly limited compromises. Not especially efficient and only one brightness. Thanks, I figured a title that cut to the chase would be better than vague comments about self defense. The other threads that I found all went into martial arts and pepper spray and morals and such...
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    Good light for clubbing people?

    My Maglight was adequate with 76ish lumens, more is of course better. Flood is nice when inspecting the engine intakes, spot when looking up at the tailfin of a 767 (my current job). Huge lumens might be overwhelming for checking a tire pressure gauge. Yike, that's a sweet light! I may...
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    Good light for clubbing people?

    I looked at a few of the self-defense threads, didn't find what I'm after. I'm an airline pilot, I can't carry much that's useful for self-defense. My 4D and 4C Maglights are retired after threats to confiscate from TSA. I like my old 3C Maglight, would like something like that in LED. I...
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    How to convert 24V or 12V to 4.5V? Wheelchair lighting.

    That looks promising, I can figure out some sort of enclosure for it. I have 12V or 24V available, can run this off one battery. I'm not an electronics guy, so most of what I read in your links makes only some sense. Is there an adjustment on this converter to set it to 4.5V? Does it matter...
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    How to convert 24V or 12V to 4.5V? Wheelchair lighting.

    I'm pimping a wheelchair. The guy is severely handicapped, he can't speak or use his arms, limited use of his legs. I'll be making a front platform to hold his joystick and a voice computer. I put a 12V LED light on his old chair, this time I want to donate a pair of Ray-O-Vac 4W LED...
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    Fenix LD01 Holster?

    The cool thing is that I just used the magnet in the tailcap to retrieve a steel part in an aluminum slot. The not cool thing is that I tossed this flashlight in a coat pocket with my wallet this morning, hopefully all the magnetic strips on my credit cards are ok. I was a little nervous about...
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    Lubrication

    I used to work with ultra-high-vacuum chambers and pumps, I think those were full of Krytox oil. Kinda thin for this maybe, but I might be able to score some vacuum pump oil for free. I can't justify buying a $50 tube to lube my $42 light. For now, I'll stick with my silicone dielectric grease.
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    Lubrication

    PTFE is short for Polytetrafluoroethylene, which is the main ingredient in Dupont's Teflon.
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    Lubrication

    I get Buna-N or Viton O-rings for a buck a hundred, but I don't have a regular supplier of Butyl. Where do you get the correct O-rings cheap?
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    Lubrication

    I looked up Krytox, wow, that looks perfect! Teflon should be fairly dry, have you used the stuff before? Where do you get it and how much $? Online it looks like a tube will cost as much as a decent flashlight.
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    Lubrication

    Good information. I also figured we had Buna-N O-rings, but after looking into it I think we have Butyl rubber, which doesn't do well with hydrocarbons. Fenix assured me my light has Butyl O-rings, and they chose that material for good reason. I have three Ray-O-Vac 4W LED lights that arrived...
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    Lubrication

    I'm neither lawyer nor chemist. In Mobil's lawsuit it was revealed that none of the "synthetic" motor oils were synthesized from pure chemicals, it was much too expensive to produce that in quantity. Apparently the few producers of "synthetic" base stock are simply refining petroleum products...
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    Any other dielectric grease vs Nyogel 760G - ?

    Silicone O-ring lube causes O-rings to swell slightly, that's advertised as a benefit. I've used it on O-rings for many years, on O-rings sometimes many feet long, even made my own O-rings. You should only put enough silicone on to make the O-ring shiny.
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    Lubrication

    Dunno about silicone lubes maybe having petroleum. The NyoGel noted earlier is a petroleum product thickened with silica, might be considered a silicone lube. I've checked Dow Molykote 55 and Permatex Dielectric Grease, both are pure silicone. The Permatex is cheap and easy to find at auto...
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    Lubrication

    Alcohol is safe with the butyl rubber O-rings Fenix uses. Alcohol wouldn't be safe with Buna-N O-rings, in case anyone thinks they might have Buna-N.
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