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Thread: Anyone else dislike brass threads?

  1. #1

    Default Anyone else dislike brass threads?

    Whenever I see a twisty (or click/twist) that shows brass threads, I'm immediately turned off. Maybe it's because I've been a photographer for the majority of my life, and I equate brass threads with a broken lens. I also hate yellow gold jewelery and watches, and bags/belts/shoes with gold or brass hardware.

    Anyone else go out their way to buy only lights that don't have brass threading?

    Yes, I am nuts.

  2. #2
    Flashaholic* Derek Dean's Avatar
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    Default Re: Anyone else dislike brass threads?

    On the other hand, I tend to equate brass threads with lights that have a brass pill, which means excellent heat sinking for the LED. They can be trickier to keep from cross threading, but generally worth the effort.

  3. #3
    Flashaholic Dr Jekell's Avatar
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    Default Re: Anyone else dislike brass threads?

    Or that so called "brass" could actually be an electroplated finish applied to the metal for various reasons?
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    Flashaholic* subwoofer's Avatar
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    Default Re: Anyone else dislike brass threads?

    When I got a Thrunite Ti, I liked this feature. The threads are also some of the smoothest I've come across.
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  5. #5

    Default Re: Anyone else dislike brass threads?

    As someone who has just got his first titanium light, with all the grittiness and galling that entails, I can tell you that I miss brass threads!

  6. #6

    Default Re: Anyone else dislike brass threads?

    Quote Originally Posted by Dr Jekell View Post
    Or that so called "brass" could actually be an electroplated finish applied to the metal for various reasons?
    x2

  7. #7
    Flashaholic* monkeyboy's Avatar
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    Default Re: Anyone else dislike brass threads?

    Quote Originally Posted by Derek Dean View Post
    On the other hand, I tend to equate brass threads with lights that have a brass pill, which means excellent heat sinking for the LED. They can be trickier to keep from cross threading, but generally worth the effort.
    Brass actually has poor heat sinking compared to copper or aluminium.

  8. #8
    *Flashaholic* Flying Turtle's Avatar
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    Default Re: Anyone else dislike brass threads?

    I like them on my Ti, EZAA, and an old Peak. Always smooth twisting.

    Geoff

  9. #9
    Moderator Kestrel's Avatar
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    Default Re: Anyone else dislike brass threads?

    Quote Originally Posted by monkeyboy View Post
    Brass actually has poor heat sinking compared to copper or aluminium.
    Not exactly correct; brass has relatively poor thermal conductivity but actually has good heat sinking due to the relatively high heat capacity of brass - it has only modest specific heat capacity (i.e. per unit weight) but combine that with its relatively high density and a fixed-volume component made of brass actually ends up being a pretty good heat sink.


    Thermal Specific _Den _“Thermal
    conduct HeatCap _sity _volume”
    (W / mK) (J / gK) (g/cc)_ (J/ccK)
    Aluminum 250 __0.85 ___2.7__ 2.3
    Brass..... 110 __0.38 ___8.6 __3.2
    Copper... 400 __0.39__ 10.5__ 4.0
    Silver..... 430 __0.23 ___9.0 __2.1
    ("thermal volume" would be the heat that a fixed-size part such as a volume-restricted heatsink will absorb, per degree rise in temperature)
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  10. #10

    Default Re: Anyone else dislike brass threads?

    I have a brass Vesuvius and with a touch of lubrication the head turns smoothly and evenly. Titanium threads tend to be rough. I like brass. Aluminum has the advantage of being lighter in the pocket.

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