Thingiverse
Counterweight system for 3D printed Astro Tracker by ovisual
by Thingiverse
Last crawled date: 3 years, 4 months ago
https://youtu.be/30XSXxy0oks
Based on Astro Tracker with Planetary Gearbox (thing:4317212) it uses dual ball bearings to stabilize the huge weight.
The system removes the need of using a ball mount and uses counterweights to balance the equipment weight, removing the stress from the tracking gears.
This is a big chunk of plastic because is designed to reduce vibrations and hold securely your imaging equipment, so is better to use high infill values and high strength materials.
The equipment I have to mount on this tracker and to balance is an 600 mm lens and dslr camera which weights 2.7Kg.
The counterweight is in fact a recipient filled with cement where I added some steel parts (screws and steel balls from bearings) about 500 grams. After cement cured I glued the lid in place with polyurethane glue and the final weight was about 3.1 kg. A bit heavy!
I reckon that without adding steel to the concrete the weight should be around 2.8 Kg.
Printing list:
1 x HeadCollar_XXX.stl (100%infill, 0.15 layer height)
1 x Z-bracket.stl (100%infill, 0.15 layer height)
1 x U-bracket.stl (100%infill, 0.15 layer height)
1 x HeadShaft.stl (100%infill, 0.1 layer height)
1 x HeadTransmissionPlate.stl (100%infill, 0.1 layer height)
1 x Knob.stl (50%infill, 0.15 layer height)
1 x Knob2.stl (50%infill, 0.15 layer height)
1 x TripodKnob.stl (100%infill, 0.15 layer height)
4 x shim (100%infill, 0.1 layer height)
1 x weight80mm.stl (100%infill, 0.2 layer height)
1 x weightLid.stl (100%infill, 0.2 layer height)
1 x HeadCap.stl (100%infill, 0.15 layer height)
Hardware used:
1 x 80mm M8 screw
1 x 400mm M8 threaded rod (ex: M8 rod from an old 3D printer)
7 x M8 nuts
7 x M8 shims
4 x 25mm M4 screws
4 x M4 shims
4 x 20 mm M4 screws
2 x ball bearings 6806 ZZ or 61806 2RS
The screw of the tripod mount is from a Camera Hot Shoe Mount to 1/4"-20 Tripod Screw Adapter Flash Shoe.
The collar part contains the tripod mount (which should be capable of holding the entire weight) with 4 popular options of mounting plates.
Based on Astro Tracker with Planetary Gearbox (thing:4317212) it uses dual ball bearings to stabilize the huge weight.
The system removes the need of using a ball mount and uses counterweights to balance the equipment weight, removing the stress from the tracking gears.
This is a big chunk of plastic because is designed to reduce vibrations and hold securely your imaging equipment, so is better to use high infill values and high strength materials.
The equipment I have to mount on this tracker and to balance is an 600 mm lens and dslr camera which weights 2.7Kg.
The counterweight is in fact a recipient filled with cement where I added some steel parts (screws and steel balls from bearings) about 500 grams. After cement cured I glued the lid in place with polyurethane glue and the final weight was about 3.1 kg. A bit heavy!
I reckon that without adding steel to the concrete the weight should be around 2.8 Kg.
Printing list:
1 x HeadCollar_XXX.stl (100%infill, 0.15 layer height)
1 x Z-bracket.stl (100%infill, 0.15 layer height)
1 x U-bracket.stl (100%infill, 0.15 layer height)
1 x HeadShaft.stl (100%infill, 0.1 layer height)
1 x HeadTransmissionPlate.stl (100%infill, 0.1 layer height)
1 x Knob.stl (50%infill, 0.15 layer height)
1 x Knob2.stl (50%infill, 0.15 layer height)
1 x TripodKnob.stl (100%infill, 0.15 layer height)
4 x shim (100%infill, 0.1 layer height)
1 x weight80mm.stl (100%infill, 0.2 layer height)
1 x weightLid.stl (100%infill, 0.2 layer height)
1 x HeadCap.stl (100%infill, 0.15 layer height)
Hardware used:
1 x 80mm M8 screw
1 x 400mm M8 threaded rod (ex: M8 rod from an old 3D printer)
7 x M8 nuts
7 x M8 shims
4 x 25mm M4 screws
4 x M4 shims
4 x 20 mm M4 screws
2 x ball bearings 6806 ZZ or 61806 2RS
The screw of the tripod mount is from a Camera Hot Shoe Mount to 1/4"-20 Tripod Screw Adapter Flash Shoe.
The collar part contains the tripod mount (which should be capable of holding the entire weight) with 4 popular options of mounting plates.
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