actual size 18 cm
Sequential Gearbox
€43.20
Power transmission, Spectra series
- Parts
- 130
- Build
- 5 hrs
- Level
- Advanced
actual width 8 cm
Power transmission, Alpha series
Compact Cardan Joint
€31.50
In stock, ships within 2 business days
A miniature cardan joint. It carries rotation between two misaligned shafts up to 45°; at a steep angle, watch the output speed up and slow down twice per turn. Polymer composite yokes, machined steel cross. 28 parts, 1 hour to build.
- Parts
- 28
- Build
- 1 hr
- Level
- Beginner
- Footprint
- 8 × 8 × 14 cm
- Weight
- 120 g
- Glue and battery
- None
Beginner: a good first build
Order today: shipped by Thursday 12 November at the latest.
Free delivery in France on orders from €99.
- Missing part replaced free
- Ships within 2 business days
- 14-day returns
- Illustrated manual included
Ages 14 and up. Contains small parts.
Compact Cardan Joint in detail
The story
It is named after Gerolamo Cardano, the 16th-century Italian scholar who described the suspension made of crossed rings. It was the English physicist Robert Hooke who, around 1676, turned it into a joint transmitting rotation between two shafts. It has been used ever since in truck drive shafts and in most steering columns.
What you'll see move
Tilt the output shaft and turn the input: the rotation carries through despite the angle. Watch the cross: it rocks with every turn. At a steep angle, the output speeds up and slows down twice per revolution while the input turns steadily.
Specifications
- Number of pieces
- 28 pieces
- Assembly time
- 1 hr
- Difficulty
- Beginner
- Dimensions
- 8 × 8 × 14 cm
- Weight
- 120 g
- Material
- PLA with 30% wood fibre
- Hardware
- Micro-screws and ball bearings included
- Glue required
- None
- Battery required
- None
In the box
- 28 wood-fibre composite parts, ready to assemble
- Micro-screws and ball bearings
- Illustrated step-by-step assembly manual
- No glue and no batteries: everything fits together and turns by hand
14+
Ages 14 and up. Contains small parts: not suitable for children under 3, choking hazard.
From the same family
actual size 12 cm
Paradoxical Gear
€28.80
Power transmission, Alpha series
- Parts
- 42
- Build
- 1 hr 15 min
- Level
- Beginner
actual size 12 cm
Miniature Differential
€34.20
Power transmission, Alpha series
- Parts
- 64
- Build
- 2 hrs 30 min
- Level
- Intermediate