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Discussion Starter · #1 ·
like the title suggests my better half persuaded me to help her make a DIY cable cam. We wanted to try it for another film idea we have so figured we better get on with it. Lots of drawings and tinkering later as well as some really duff results we finally came up with something that worked.

The video is on vimeo. Enjoy :thumbsup:

 

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That's cool, but it's awfully big and heavy. This one fits in an average size hydration pack and is strung using 100 pound test dacron braided fishing line:

 

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Gear Whore
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That's really cool, gives me some great ideas for my future cable cam setup...awesome. How did you set up the bungee stop?
 

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Tie a loop in the zipline a few feet from the end, and then tie a length of bungie to the loop. Make sure that the maximum stretch length of the bungie is not so long that when at its max stretch that it will reach whatever you attach the end of the zip line to (you want the bungie to stop the camera shuttle before it smashes into the tree). Use 'small' knots in the bungie (sheet bends are nice) so they fit through the pulleys easily. At the other end of the bungie attach something that does NOT fit through the pulleys like a plastic ring or a ball. The pulleys will ride down the zipline and the bungie will also feed through the pulleys when the shuttle arrives. Since the loose end of the bungie does not fit through the pulleys, it will stretch and stop the shuttle. You need to experiment to find what strength and length of bungie to use to stop your particular camera shuttle.
 

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since 4/10/2009
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I see you have both a gopro adhesive mount and a ram mount (with the gopro tripod adapter) on that trolley, tscheezy. Do you have a preference for one or the other, or do you switch back and forth between them depending on the situation?
 

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I started with the adhesive GoPro mount and some of their extension arms, but it was a pain to get the position of the camera right since the shuttle was usually angled slightly downhill (the zipline is sloped) and unless you want the camera to aim straight ahead or straight to the side, you don't have many choices for subtle rotation with GoPro's arms. The RAM system is totally superior in every way. You can just loosen one knob and move the camera body freely in all axes, then retighten that one knob. I have taken the GoPro adhesive mount off in the mean time.
 

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tscheezy said:
That's cool, but it's awfully big and heavy. This one fits in an average size hydration pack and is strung using 100 pound test dacron braided fishing line:

Dude that was perfect....easy and light and there are tons of options ....thanks for sharing!!
 

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Discussion Starter · #9 ·
tscheezy said:
That's cool, but it's awfully big and heavy. This one fits in an average size hydration pack and is strung using 100 pound test dacron braided fishing line:

Tscheezy,

You're right not nearly as light as yours by a long way. I've got some really good ideas for a cable cam 2.0 from your set up. Ours has to be a fair bit burlier as it is carrying a much heavier camera as we need the lens/iso/focus options to get the shot we're looking for which you can't get witht he GoPro HD. I'm really impressed with the quality of the footage from the GoPro HD though, I think we may have to get one and test it out.

Thanks for sharing all our tech know how, I really liked your snowbikign film too and the ball joint thingies are also something I think we will be looking into. We're doing a 9 month cycle tour in a couple of years and will be looking to make a film about it and the ball joints will allow for some really interesting shots and lightweight set ups.

Patrick:thumbsup:
 

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Yeah, you would not want to put anything much bigger or less armored on my type of zip line than a GoPro. Putting a DSLR on my shuttle would be a really bad idea. :)
 

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tscheezy said:
I started with the adhesive GoPro mount and some of their extension arms, but it was a pain to get the position of the camera right since the shuttle was usually angled slightly downhill (the zipline is sloped) and unless you want the camera to aim straight ahead or straight to the side, you don't have many choices for subtle rotation with GoPro's arms. The RAM system is totally superior in every way. You can just loosen one knob and move the camera body freely in all axes, then retighten that one knob. I have taken the GoPro adhesive mount off in the mean time.
Where can I find a RAM? mounting peice like that?
 

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GPSCity carries pretty much the hole RAM lineup and that's where I get mine. I use the size 'B' components (1") for my GoPro use. Link
 

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That is some pretty interesting camera angles you have in the alaska snow bike video. I hope you don't mind if I ask a few questions.
What type of mount do you have that allow 360 degree rotation around the rider?
It is attached to the helmet?
Can you control the rotation while riding?

Really cool stuff!
 

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wounded knee
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tscheezy said:
Tie a loop in the zipline a few feet from the end, and then tie a length of bungie to the loop. Make sure that the maximum stretch length of the bungie is not so long that when at its max stretch that it will reach whatever you attach the end of the zip line to (you want the bungie to stop the camera shuttle before it smashes into the tree). Use 'small' knots in the bungie (sheet bends are nice) so they fit through the pulleys easily. At the other end of the bungie attach something that does NOT fit through the pulleys like a plastic ring or a ball. The pulleys will ride down the zipline and the bungie will also feed through the pulleys when the shuttle arrives. Since the loose end of the bungie does not fit through the pulleys, it will stretch and stop the shuttle. You need to experiment to find what strength and length of bungie to use to stop your particular camera shuttle.
I know you must be tired of everyone picking your brain on your camera mounts, but I'm really interested in your zipline, I have the ram mount that I bought last year from a previous sugestion from you (THANKS!)
Could you show in pics or vid just how you hook up the end of the zip to the tree where the loop and bungie come into play?
And where do you purchase the bungie at, or is it part of the zipline, sorry I'm confused on that part.
 

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Ok, here are details.

Get some bulk bungie at any hardware store, or pull it out of the bottom of an old jacket, etc. Find some strong and springy, but thin stuff. It needs to fit through your pulleys easily.

Tie a loop in your main line. Tie an end of the bungie to the loop using a sheet bend (google it). I put some wire heat shrink tubing over the knot to make it really clean. Don't melt your lines when shrinking the heat shrink tubing.





On the other end of the bungie, tie in a plastic washer or similar that does not fit through the pulleys (I used a clove hitch and bowline- google it). If you use a washer like I did you can pass the zip line through it so it all wraps nicely onto the spool:



To go around a tree branch, I tied a loop into the line and at the very end another loop with a cheap metal clip:



To go around a bigger tree you can just clip the metal clip straight onto the main zipline and it will constrict around the trunk.

Here's the downhill end of the setup. I walk the spool uphill to the starting point.



I recently got a smaller spool of 200# test Spectra fishing line. It's smaller, stronger, and green so in some cases it will be less visible in the vid. I also made a few changes to my shuttle to make it smaller. Despite how cheap the pulleys are, they work surprisingly well.

 

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wounded knee
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TSCHEEZY

Thank you so much for taking the time to take and post up the pictures.:thumbsup:

Sometime this Summer I'm going to make one, should be really cool to experement with.

Thanks again.
 

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Sorry to resurrect such an old post, but does anyone know of a way to keep the camera horizontal to the ground, regardless of line angle?

EDIT: DUH, never mind, I answered my own question with a little thought!
 
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