Why no titanium tripods?

Discussion in 'Digital SLR' started by Rich, Jan 7, 2006.

  1. Rich

    Rich Guest

    Carbon fibre is nice, Gitzo's "basalt" is a pathetic scam
    and weighs as much or more than aluminum, and aluminum
    is just fine. But why not titanium? It's strong and light and
    It's more rigid by weight than aluminum
    and probably resists environmental (water, abraision, etc)
    better than carbon fibre.
    -Rich
     
    Rich, Jan 7, 2006
    #1
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  2. Rich

    bmoag Guest

    $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
    Do you understand what the melting point is of titanium?
     
    bmoag, Jan 7, 2006
    #2
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  3. Rich

    bjw Guest

    Titanium is more dense than aluminum, so if you made a
    titanium tripod with equal size tubes, it would be heavier.
    To lighten the tripod you would have to make the tubes either
    thinner in wall thickness (increases vulnerability to denting,
    even though Ti is stronger) or make the tube diameter smaller,
    which decreases stiffness/rigidity. Stiffness against bending
    increases as about the third power of tube diameter (assuming
    you keep the weight constant, so the wall thickness goes down
    as the tube diameter goes up) which means a good material
    for tripods is one that is fairly light so you can make the tubes big.
    Titanium is somewhat stiffer per weight than aluminum. This
    means you would be able to make the tube diameters a bit
    smaller, and keep the tripod a similar weight. The bottom line is,
    with Ti you could make a tripod that was slightly dimensionally
    different from aluminum, weighed the same, was just as rigid,
    and cost significantly more. Maybe Leica should do it
    (Kidding! Only kidding!)
     
    bjw, Jan 7, 2006
    #3
  4. Rich

    Scott W Guest

    Titanium main claim to fame is not losing its strength when it gets
    hot, like aluminum does. This is not really needed for tripods. It
    is a bit stiffer then aluminum but only a bit.

    Carbon fiber is by far the best for getting high stiffness and low
    weight.

    BTW Titanium is both costly to buy and very costly to machine.

    Scott
     
    Scott W, Jan 7, 2006
    #4
  5. Rich

    Celcius Guest

    Scott,

    Right. It's even used for bicycle frames which undergo a lot of torque.

    Marcel
     
    Celcius, Jan 7, 2006
    #5
  6. Cost. I reckon a titanium stand would run a couple grand with minimal
    features.

    If you're bored (as a guy without a camera is apt to be), sketch out a
    basic design and send it to a bicycle frame maker. They'll quote you a
    price.

    Dave
     
    David Geesaman, Jan 7, 2006
    #6


  7. Rich...I'm sure I've defended you in the past and I still don't agree with
    how personal the whole thing gets but Jesus....enough with the plastic
    already!

    EVERYONE but EVERYONE knows your views on plastic. I just suggest you go and
    get yourself an old Leica or something else engineered completely in metal
    and everything will be just fine.

    Maybe you have a real phobia with plastic, I don't know. But the constant
    plastic links are shitting us to tears, I make it SEVEN threads from you
    with plastic in the title!!!!!

    Maybe you are just a masochist?
     
    Steve Franklin, Jan 7, 2006
    #7
  8. Rich

    Proconsul Guest

    Steve Franklin wrote:

    Carbon fibre is nice, Gitzo's "basalt" is a pathetic scam and weighs as much or more than aluminum, and aluminum is just fine. But why not titanium? It's strong and light and It's more rigid by weight than aluminum and probably resists environmental (water, abraision, etc) better than carbon fibre. -Rich



    Rich...I'm sure I've defended you in the past and I still don't agree with how personal the whole thing gets but Jesus....enough with the plastic already! EVERYONE but EVERYONE knows your views on plastic. I just suggest you go and get yourself an old Leica or something else engineered completely in metal and everything will be just fine. Maybe you have a real phobia with plastic, I don't know. But the constant plastic links are shitting us to tears, I make it SEVEN threads from you with plastic in the title!!!!! Maybe you are just a masochist?

    He's a troll - I recommend a killfile and/or not feeding him..... :)

    PC
     
    Proconsul, Jan 7, 2006
    #8
  9. Rich

    Rich Guest

    Hmmm. So what?
    -Rich
     
    Rich, Jan 8, 2006
    #9
  10. Rich

    Rich Guest

    There are no tripods made entirely of plastic, I never mentioned it in
    the thread.
    -Rich
     
    Rich, Jan 8, 2006
    #10
  11. Rich

    Jasen Guest

    Gotta admit he's right there....no mention of plastic in this one. Just a
    misconception about titanium. Rich, do you realise how much a Ti built
    tripod would cost??? $$$$!!
     
    Jasen, Jan 8, 2006
    #11
  12. Rich

    Stacey Guest

    But is likely more dampened and hold the camera more stable.
    Wrong, it's a VERY flexable material.
     
    Stacey, Jan 8, 2006
    #12
  13. Rich

    Stacey Guest

    And here it's used for it's flexibility and resistance to fatigue cracking.
     
    Stacey, Jan 8, 2006
    #13
  14. Rich

    Jeff R Guest


    In terms of absolute measures, sure. Its Young's Modulus, for example.
    If you factor in its density, however, and consider that you can put in a
    *bigger* bit of Ti, then the rigidity can be achieved with greater size,
    even with lesser mass - particularly compared to steel.

    Ti masses roughly 1.73 that of Al.
    Stiffness (Y.M.; "E") of Ti is roughly 1.68 times that of Al.

    Weight-for-weight, they're effectively equivalent.

    Cost, ease of supply and ease of manufacture *could* just be a factor here.
     
    Jeff R, Jan 9, 2006
    #14
  15. Rich

    eawckyegcy Guest

    Like everything, it has it's ups and downs.

    http://en.wikipedia.org/wiki/Titanium

    Unmentioned is that because Ti has a very low thermal conductivity it
    makes for nice cooking utensils. That there $20 spoon won't heat up as
    fast as an Al or Fe one does...
     
    eawckyegcy, Jan 9, 2006
    #15
  16. Rich

    Rich Guest

    Whatever happened to using a bag of lead shot?
    It's about 50% stiffer than aluminum. Strength is five times greater.
    -Rich
     
    Rich, Jan 10, 2006
    #16
  17. Rich

    Rich Guest

    It also won't corrode in a harsh environment.
    -Rich
     
    Rich, Jan 10, 2006
    #17
  18. It's quite weldable, and last I checked, welding melts it. Try welding
    carbon fiber, now that's a trick :).
    (It's quite easy to poke holes in Rich's ridiculous diatribes, but at
    least use something with a basis in reality)

    Dave
     
    David Geesaman, Jan 10, 2006
    #18
  19. But you do see plenty of plastic tripods with aluminum in the leg
    sections. Why? Because it works really well.

    Dave

    Karma: when Rich loses a testicle and the doctors tell him the
    replacements only come in plastic
     
    David Geesaman, Jan 10, 2006
    #19
  20. Rich

    Scott W Guest

    For the same weight aluminum is stiffer. For something like tripod
    legs, for a given weight, aluminum will be stronger was well.

    Scott
     
    Scott W, Jan 10, 2006
    #20
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