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  1. #21
    DWThomas's Avatar
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    Quote Originally Posted by wildbill View Post
    Which of these solenoids should I get? 1" travel, continous is what i'm guessing.i'd like to keep it under $35 if possible.
    I'd like 12v but I don't know how big of a 12v battery would be needed.
    http://www.mcmaster.com/#electric-solenoids/=fr188h
    They seem to list the power consumption in watts and offer two different voltage ratings. You could determine the current by dividing the watts by the volts; e.g., a 6 watt solenoid on 12 volts would draw 0.5 amps. That's a pretty significant current -- no transistor radio batteries! Probably C or D cells, or maybe a rechargeable sealed lead-acid gel cell battery, would be suitable candidates. I would be a bit concerned about the mechanical interface too. A really powerful solenoid with a long stroke could possibly damage the shutter. This might suggest some sort of spring or other stretchy element to separate the solenoid motion a bit from the shutter trigger. Or perhaps some adjustable stop could be used. Those old mechanical self timer accessories typically had a sort of telescoping fitting with lock ring adjustment to set the actuator stroke depth.

    This could turn into quite an exercise -- though perhaps fun.

  2. #22
    EASmithV's Avatar
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    You could always get an old graflex solenoid and hook it up to a few batteries on a wire, or even to a small RC transceiver? They also have screw in self timers that you can use for large format.
    "Hit 'em with a Speed Graphic"

    "The camera is an instrument that teaches people how to see without a camera."
    — Dorothea Lange

    "Film is to digital as a symphony orchestra is to a kazoo" - Brian C. Miller

    http://www.flickr.com/photos/easmithv/
    RIP Kodachrome

  3. #23
    wildbill's Avatar
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    Quote Originally Posted by EASmithV View Post
    You could always get an old graflex solenoid and hook it up to a few batteries on a wire, or even to a small RC transceiver? They also have screw in self timers that you can use for large format.
    I actually scored a graflex solenoid so i'm going to give it a shot. As I said in my original post, I have zero interest in those screw in timers. I had one, it lasted 10 minutes and isn't any where close to what I need.
    www.vinnywalsh.com

    I know what I want but I just don't know how to go about gettin' it.-Hendrix

  4. #24

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    As said before, I like the toy RC car or plane controllers, it'll work just fine for this.

    Radio Shack or any 99¢ store toys will do.

    .
    Anyone can make a Digital print, but only a photographer can make a photograph.

  5. #25
    hoffy's Avatar
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    Howdy,

    I have been thinking about this as well. I am wondering whether I was to combine this:
    http://www.ebay.com.au/itm/Tubular-d...item256adae6a1
    with this:
    http://www.ebay.com.au/itm/REMOTE-SH...item4600fb7c52
    it would be enough to trigger a heavy shutter, like those found on a Koni-Omega
    Just a thought (not exactly sure how the Graflex solenoid would work, though....I am looking at being able to use such a setup for bulb or timed exposures.)
    Hoffy's Flickr Photostream (Not quite analog Only, but nearly!)

    I'm wondering.....if I talk about enlarging techniques on DPUG, will I get banned?

  6. #26
    wildbill's Avatar
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    I got a used graflex solenoid and tried it out today with a 3v battery. There's not that much movement (maybe 1/4") and it's a pull not a push as I was hoping for. I've looked at some RC controllers and servos and that's what I plan on using when I get around to it.
    www.vinnywalsh.com

    I know what I want but I just don't know how to go about gettin' it.-Hendrix

  7. #27
    hoffy's Avatar
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    I also found some 9V push pull solenoids on ebay as well. I am thinking of getting that remote controller and one of them and a bunch of hose clamps.....it should work!
    Hoffy's Flickr Photostream (Not quite analog Only, but nearly!)

    I'm wondering.....if I talk about enlarging techniques on DPUG, will I get banned?

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