Hello all. It has been awhile since my last visit and post. I saw this forum topic and decided to investigate.
I hope I am not out of line here, but I have been working on a portable dolly (or "slider" if you will) for quite sometime now.

To be clear, this is a relatively heavy dolly, and is specifically designed for large set-ups and/or large-style cameras (shoulder-type). This is not a dolly for backpacking up a mountain or for stop-motion photography.
Two unique concepts is that dolly track can be as short as 4 feet or as long as 22 feet, or anything in-between. Second, a motor-assist option is available, which allows the user to concentrate on pans, tilts and zooms without also having to contend with creating a smooth lateral motion. Again, this dolly is not a Dynamic Motion device nor is it controlled by a computer.

Here is a short little demo I shot last week:
https://www.youtube.com/watch?v=LrD8eo279Cc&feature=youtu.be

If anything, it is a quick alternative to floor track and a ride-on dolly, and all of the grip equipment and personnel that comes with a doorway dolly. This dolly will be available for purchase very soon.

Thanks.
Patrick McLoad

Not to beat a dead horse, but here are couple other demos for the StreamLiner Cinema Dolly that will soon be re-edited and combined:
StreamLiner Cinema Dolly System (http://vimeopro.com/mcload/streamliner-cinema-dolly-system)

I do realize that this is way overkill for most of those who use HD-DSLR's. But for medium to large camera set-ups, it is a real time and budget saver over traditional floor track systems….and it's motorized. Below is a photo of a raw aluminum StreamLiner Dolly before anodizing.

FYI, I made a few changes to the "Saturn Rocket" demo posted earlier, and have deleted that particular video from YouTube.

It's replacement is here:
StreamLiner Saturn Rocket Demo 2 - YouTube

My apologies for the confusion.
If the video looks a bit soft, it's because economics forced me to use a wide angle
lens adapter as opposed to a true wide-angle lens. And lets face it, shooting upward
into daylight panels and merc-vapor lights isn't the greatest either.

Thanks for looking!

P Mc