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Source4 C-Clamp for Technobeam?

Discussion in 'Lighting and Electrics' started by Daveslights, Feb 3, 2008.

  1. Daveslights

    Daveslights Member

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    I ordered some clamps for my technobeams, and they sent me the ETC source 4 Leko clamps:

    http://www.bhphotovideo.com/c/product/435153-REG/ETC_7060A2009_400CC_C_Clamp_for.html/

    Are these ok to use with technobeams on crank lifts? The extra adjustable part that would attach to the yoke of the technobeam seems a little weird. I feel like it will hold the fixture to far from the bar, and that it might turn a bit with the weight.

    any thoughts?
     
  2. TimMiller

    TimMiller Well-Known Member

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    Re: soucce 4 leko C clamp for technobeam?

    First of all ETC C-clamps are not load rated. They do make load rated C-clamps. I believe they are made by altman. This is what i use on my moving lights. There are also some other manufactuers that make load rated clamps. I my really heavy moving lights I use these http://www.alistage.co.uk/aliscaff_couplers_and_fittings_coupler_fittings.shtml There are companys here in the us that make them. I also like to use omega clamps, they in my opinion are the best clamp made. You put the light against the truss and they automaticly hold the fixture onto the truss so you can then tighten it down. Omega clamps are the industry standard in the touring industry because they are fast, and you dont spend time struggling trying to flip down the top of the half coupler and sliding the bolt into the top of it. Buts its all based on how much you want to spend. Also dont forget your safety cables.
     
  3. disc2slick

    disc2slick Active Member

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    Re: soucce 4 leko C clamp for technobeam?

    I have used c-clamps on techno-beams in the past. though usually using 2 clamps on each yoke. You can also look into using mega-clamps.

    -Dan
     
  4. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    Conventionals=C-Clamp=Iron Pipe OR [Conventionals=C-Clamp + Truss Protector=Aluminum Tube/truss].
    I think this is the best (sorry ETC. ETC suggests its clamps are to be used ONLY on Source4 ERS/PARs/PARnels. What to they provide with the Revolution™?)

    Movers[even small moving-mirror units] equals "Half-Couplers" equals Aluminum Tube/truss.
    I think this is the best, but these are okay, as well as others.
     
    Last edited: Feb 3, 2008
  5. tgates

    tgates Member

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    I love Mega-Claws. Very easy, very safe. Your movers are relatively secure before you even tighten them. Trying to use Mega-Coupler with a heavy moving light, or really anything, is a pain. Techno beams are light, I'd use a mega-clamp (which I am also fond of) before I used a coupler.
     
  6. Charc

    Charc Well-Known Member

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    Where's the panlock, Derek?!
     
  7. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    That's one of the best features, one doesn't have to fiddle with, or break off, any Jesus nut, or adjust one's wrench. The springy, cupped washer holds the pan in place!
     
  8. Charc

    Charc Well-Known Member

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    Wait, so if I pulled down and rotated, I'd be panning?
     
  9. soundman

    soundman Well-Known Member

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    Its not that springy. For most focuses you should be able to leave it somewhere between tight and loose and be able to forcible move it. When you have an odd focuse, a really tight shot or a light that will be smacked around allot you can crank down on the yolk bolt and it will lock up nice and tight. The F-bolt will often find a grove limiting the range of pan but with this style that is not an issue.
     
  10. Charc

    Charc Well-Known Member

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    Ah, I wish I'd known this on my focus (or had a lightspeed wrench at the time) as I accidentally smashed up my left ring finger panning an instrument with a mega-clamp, under the nail bleeding, it looks funny now. :lol:
     
  11. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    From the cutsheet:
    The Belleville spring washer has 600# of spring load when compressed. This spring pressure keeps the fixture from drifting after making small pan adjustments to the light fixture. Just grab the fixture by the top of the yoke and twist to pan the fixture. Usually, you will not need to pull out your wrench to tighten the pan bolt, the fixture will stay securely held.
     
  12. soundman

    soundman Well-Known Member

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    I find that true for one offs or a rep plot but something like rotating rep I still lock the #@[email protected]#%^# out of them, the fewer focus notes I have to do every day at call the more time I have to nap.
     
  13. icewolf08

    icewolf08 CBMod CB Mods

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    Two ETC Cast C-Clamps. They work, well, just like a c-clamp should.

    On my PowerSpots I use half couplers, but I suppose one could use c-clamps as well. I mean if the c-clamp can hold the weight of a Rev, it should have no problem with a smaller fixture.
     

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