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Thread: CMG Ultra

  1. #1
    Enlightened
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    Default CMG Ultra

    Hey everyone,

    Just wondering what the physical dimaensions are on a CMG Ultra (including diameter). I want to determine whether it would be pocketable for me or not. And the extra runtime over the Arc AAA is nice too.

  2. #2
    Flashaholic*
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    Default Re: CMG Ultra

    Moved to LED...

    --dan

  3. #3
    Flashaholic*
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    Default Re: CMG Ultra

    Run time is around 15 hours plus. I don't deem it to be very pocketable. ARC AAA is a much better pocket carry. The Ultra would be slung around the neck or kept in a harvesack etc.

  4. #4
    Flashaholic
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    Default Re: CMG Ultra

    3.26" x 0.75"dia.

  5. #5

    Default Re: CMG Ultra

    I think the Ultra is quite pocketable.

    It's about the size of a shotgun shell. It is a little large to carry on a keychain (although, some forum members do).

  6. #6
    Flashaholic* RonM's Avatar
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    Default Re: CMG Ultra

    I pocket the Ultra. It's my EDC. Usually wear Dockers. At this point I'm choosing runtime over size.

  7. #7
    Flashaholic*
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    Default Re: CMG Ultra

    I pocket the Ultra. I hang my keys on the top of my pocket and let the Ultra hang just below the keys. Goes unnoticeable for the most part.

  8. #8

    Default Re: CMG Ultra

    Very pocketable, but I normally keep mine on a neck lanyard for late night trips downstairs.

    It is roughly the size of a 20ga shotgun shell it that helps any.

  9. #9

    Default Re: CMG Ultra

    I carry/EDC my CMG Ultra-G in my "other" pocket.

    I do not carry the Ultra on the keyring it is way too large for that - and I would consider the much smaller ArcAAA too large for my keyring as well - instead I have a Photon 1 yellow on that.

    Ultra at CMG Equipment

    and check out these two cpf threads:

    CMG Ultra-G vs. Ultra

    CMG Ultra-G

  10. #10
    Enlightened
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    Default Re: CMG Ultra

    Have an ARC AAA and CMG Infinity (same size as Ultra, less light, more run time) The Arc is on my keychain right now. The CMG is just too big for my liking to be on my keychain. When wearing around my neck, I didn't even remever the CMG was there. With a run time of 7-8 hours continuous on the ARC AAA, I figure with the intermitent 5 minuntes here, 5 minutes there use, it will last me 6 months on a battery. I really can't complain with the ARC battery life.

    I have the Ininity (w/amber LED) as a reading light for my wife in bed and the car. The Infinity is VERY nice for that. Being dimmer than the Ultra it doesn't distract the driver, but is more than adequate for reading.

    Both have their place. For me, the ARC battery life is really more than sufficient for intermitent use. Plus with the ARC smaller size it is really cool to show people what LEDs can do.
    (IMHO)

  11. #11
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    Default Re: CMG Ultra

    I find the Ultra too big for my keychain. It's a better size for hanging on your backpack or leaving in the car (with a lithium battery so it can handle the temperature ranges). I use mine as a reading light or to light up my keyboard when I'm playing a game with the lights out. AA batteries are practically free in bulk so it is a great light for when you plan to run it for a while.

    I find the Arc AAA much better for carrying all the time on my keychain. I don't normally use it for long periods of time so I'm still on my original battery after a year of carrying (I actually switch between my CPF edition and an EV turq, both on their original batteries).

    Be warned, though, the battery life on the Ultra is not nearly what they advertise. Brock did a runtime test with a rather disappointing result:

    http://www.uwgb.edu/nevermab/battery.htm

    After 5 hours it was to 1/2 initial brightness.

    I think others have tested it and got longer runtime than 5 hours, but most reports agree that 10 hours is the most you can expect with good light. That's only about double what you get with an Arc AAA.

    - Russ

  12. #12
    Flashaholic* pedalinbob's Avatar
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    Default Re: CMG Ultra

    wouldnt the ultra run longer on a lithium?

    the runtime graph was using an alky.

    Bob

  13. #13
    Enlightened
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    Default Re: CMG Ultra

    That doesnt seem to big IMO to not be pocketable. After all I have plenty of cargo pants, and already carry wallet/cell phone/digital camera/flashlight/keys/Palm pilot, so it will not be a big deal to just add a little (compared to everything else i carry) CMG Ultra. I would get an arc aaa, but this will see a lot of use.

  14. #14
    Flashaholic*
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    Default Re: CMG Ultra

    I put one around my neck a few weeks ago. Definately bigger than the "photon sized" item that it replaced - but so far so good.

  15. #15
    Enlightened
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    Default Re: CMG Ultra

    Just ordered one on Tuesday from TTS. Should be coming today if it was shipped the day I ordered it! I can't wait! [img]images/icons/grin.gif[/img] [img]images/icons/grin.gif[/img]

  16. #16

    Default Re: CMG Ultra

    As a seller of CMG Infinity Ultra, and as personal appreciator of fine products, I must say that this is an absolutely superb product. While no flashlight product can be all things to all people, the Infinity Ultra, for its purpose, is tough to beat. Quality and performance in terms of materials, precision machining, electronic circuit design, optical output, and battery life make this a very desirable utility and emergency light.

    A worthwhile accessory for any appreciator of LED technology.

  17. #17

    Default Re: CMG Ultra

    The main Infinity Ultra advantage is that you can run it off a Lithium, that and it's brighter and cheaper than the Arc AAA.

  18. #18
    Flashaholic* hotbeam's Avatar
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    Default Re: CMG Ultra

    I read (on the pack) that using Alkalines could reduce the life of the led? Is that really possible?

    Anyone know why they have not used a lens to focus the beam?

  19. #19
    Flashaholic* RonM's Avatar
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    Default Re: CMG Ultra

    <font size="2" face="Verdana, Arial">Adding a lens would add to the size, weight and cost, and IMHO make the light less useful. The broad even beam of these single LED lights make them great task and general purpose lights. I've never found much use for the highly focused beams of the Brinkman Longlife, PS Impact, Turtlelight I, etc.

  20. #20
    Flashaholic* RonM's Avatar
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    Default Re: CMG Ultra

    Oops! Pasted the wrong thing into my post above. should have pasted the following quote:

    Anyone know why they have not used a lens to focus the beam?
    <font size="2" face="Verdana, Arial">

  21. #21
    *Flashaholic* PlayboyJoeShmoe's Avatar
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    Default Re: CMG Ultra

    I have an ARC AAA and an Infinity Ultra, both on lanyards for neck carry (keeps 'em away from all the scratchy stuff in my pockets!)

    I find myself carrying the ARC more, as it is a bit lighter and a lot smaller.

    The Ultra does put out an immpressive amount of light for the size it is! In fact I think it will go around my neck tomorrow, since it's going to get colder here! (Has a Lith in it!)

  22. #22

    Default Re: CMG Ultra

    Originally posted by RonM:
    Adding a lens would add to the size, weight and cost, and IMHO make the light less useful.
    <font size="2" face="Verdana, Arial">--

    My understanding was that the LED housing itself acts like a focussing lens -
    it certainly appears to be that way on my yellow Photon LEDs with their relatively narrow beams.

  23. #23
    Flashaholic doubleganger's Avatar
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    Default Re: CMG Ultra

    I found the ultra to be pretty unfocused but with dark adapted eyes it's more than bright enough to navigate by. Just for fun I used heat shrink tubeing to attach a 3/4 inch acrylic ball to mine. That gives it a bright very even spot of about 15 inches at about four feet. I appreciate the brighter, more focused light when, for example, I'm looking for something in our unlighted storage shed with non dark adapted eyes. I haven't tried walking a dark path with it yet and I may possibly want to remove the ball after I try that.

  24. #24
    Flashaholic* txwest's Avatar
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    Default Re: CMG Ultra

    Originally posted by PlayboyJoeShmoe:
    The Ultra does put out an immpressive amount of light for the size it is! In fact I think it will go around my neck tomorrow, since it's going to get colder here! (Has a Lith in it!)
    <font size="2" face="Verdana, Arial">Joe,
    If it gets cold enough here that the light hanging around your neck needs a lithium battery, I'm moving SOUTH!!! :&gt TX

  25. #25
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    Default Re: CMG Ultra

    The Infinity Ultra has more of a flood effect, a little broader than the Arc AAA although just as bright, that I have found to be a little more useful for illumination of dark paths at night, as long as you only want to see a few feet in front of you.

    In my opinion, both the Ultra and Arc AAA are "task" lights for close-up work illumination, but also serve well in close-in night walking scenarios.

    If you want to see more than a few feet in front of you, this would require a light with at least 2AA or 2-CR123 size.

  26. #26

    Default Re: CMG Ultra

    Well, or the 1 CR123 Arc LS.

  27. #27
    Flashaholic*
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    Default Re: CMG Ultra

    Don't forget the Infinity and Ultra are designed and marketed as task lights. Geez!

    I have used both regular and Ultra outside, with residential light pollution. The Ultra lights things up very well.

    It will be a long time till a LED can light up the rear sphincter of a flea at 1,000 meters. [img]images/icons/rolleyes.gif[/img]

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