HOVER-rig 01I created the name HOVER-rig to document a double-function.
The SLR-camera turns not only from horizontal to vertical direction,
but also the film-format from landscape to portrait. The multiple
exposure-technic helped me to document the landscape-portrait-movement
in one photo. The use of three model-servos enables me to turn
the SLR-camera - similar to a cardan-system - in all photographic
perspectives, I would choose, if I would be in the sky in person.
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HOVER-rig 02To fix electronic and mechanical elements, I used a light
Aluminium-frame (30 mm x 3 mm) in a length, depending on individual
conditions (size of the camera etc.). Whenever possible, I used
2 mm, 2.5 mm, 3 mm or 4 mm countersu nk screws to optimize the
aerodynamics. On the outer Al-frame are fixed two model-servos
for horizontal and vertical rotation with direct drive. On the
inner AL-frame are fixed the following components: model-receiver;
model-servo (landscape/portrait-movement) with well-sized gears,
AL-block with two ball-bearings and 6 mm steel-axis for the camera-holder;
battery-pack (4x Mignon 1100 mAh) and model-case with electronic
relais-switch. |
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HOVER-rig 03Back view with vertical camera position The camera-holder
is sewed with a fret-saw out of one Al-window-frame to get an
Al-angle with highest stability. The camera-srew and ocular-cap
are fixed by a 1 mm line each. The Al-frame, the camera-holder,
the tripod-legs and the SUMIPI are grounded grey and lacquered
red to make them look fine. All electric cables are glued with
rapid-adhesive to reduce wind-effects and to make it look good
too. For needs of repair all changes (servo/frame; frame/frame;
antenna/receiver; release-cable/electronic relais; video-camer
a (not added here)/frame) are equiped with compatible plugs. |
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HOVER-rig 04Front view with vertical camera position All non-glued, plug-connecting
cables are twistet to prevent breakage. The antenna is twistet
into a single leg of the trip od. The legs are simple fiberglass
tubes (8 mm), fixed on an AL-stick with small steel-bolts (umbrella).
Their special function is shock-absorbing nearby the ground.
The HOVER-rig's rotation is done by the upper model-servo. Inside
this servo I installed a 4 mm steel-srew as axis. The HOVER-rig
is fixed on the SUMIPI with a wing nut and guarded against loss
with a steel-bolt (1.5 mm). |
SUMIPI
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PRUSIK-loopDr. Karl PRUSIK gave the knot's name. He developed this clamp-knot as a life-saving-knot for alpinists. Whenever you try out this ingenious, simple knot, you'll be faszinated by its effects. I use it, because there is 0 % reduction of the kite-line's breaking-strength. It may take 1 or 2 minutes to fix the SUMIPI. To make the PRUSIK-knot work well, you have to choose the line-diameter 1/3 of the kite-line's diameter. |
PICAVET-suspension's fixing on the kite-lineI like to use two PRUSIK-loops to fix my HOVER-rig on the kite-line. The stainless carabiner with stainless blocks are part of a PICAVET-suspension, I used before I found SUMIPI. |
E-Mail: wbieck@t-online.de