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The
track dolly can also be used in conjunction with zooming in or
out of the camera to add a new perspective to your video, film
or movie production.
Below
are some notes from Rick Clarke:
"DETAILS
AND PARTS LIST:
Total
cost of the dolly was about £80.
Total
Dolly size = 2ft wide x 3ft long.
Type
of pipe used for track = 32mm PVC waste pipe.
Angle
alluminium width = 2in x 2in at 3mm thick. (2 x 3ft lengths)
Carriage
bolts: 6 x 4in (to hold the angle aluminium to the board).
Carriage
bolts: 16 x 2in (to bolt the wheels to the angle aluminium)
MAIN
BOARD: 2 X sheets of 2ft X 3ft 7-PLY sheets screwed together with
30mm self-tapping screws.
Skateboard
wheel spacers x 16
skateboard
wheels x 16. Dia: 50mm (52mm are also ok)
Bearing
assemblies x 32
NOTE: Angle aluminium is a lot easier to work with than angle
iron - which is very heavy and hard to drill & cut. It also
goes rusty and is generally not much fun to handle.
ALSO:
Try to get the wheels positioned closer together so they sit on
the upper/top portion of the track rather than middle/sides of
the track. (Or in other words - go for a small/narrow "L"
shape area for the track to sit in)
I found wider-spaced wheels were trying to bend the pipe and make
the dolly harder & more jerky to push with weight on it"
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