actual size 18 cm
Sequential Gearbox
€43.20
Power transmission, Spectra series
- Parts
- 130
- Build
- 5 hrs
- Level
- Advanced
actual width 10 cm
Power transmission, Alpha series
Teardrop Cam
€27.00
In stock, ships within 2 business days
A mechanism that turns rotation into straight back-and-forth motion. The teardrop-shaped cam pushes a roller follower on a ball bearing: the follower stays still on the round part, then rises and falls as it passes the tip. The roller rolls instead of rubbing, so the motion stays smooth. 32 parts, 1 hour to build.
- Parts
- 32
- Build
- 1 hr
- Level
- Beginner
- Footprint
- 10 × 8 × 10 cm
- Weight
- 130 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.
Teardrop Cam in detail
The story
The cam is one of the oldest tools in mechanics: the engineer al-Jazari was already describing cams in his machines around 1206. Today it is everywhere a movement must repeat exactly, starting with the camshaft that opens the valves of every car engine.
What you'll see move
One turn of the crank: the follower stays still while it rolls on the round part, then rises and falls as it passes over the tip of the teardrop. Change the profile and you change the motion: you see at a glance how a shape becomes a path.
Specifications
- Number of pieces
- 32 pieces
- Assembly time
- 1 hr
- Difficulty
- Beginner
- Dimensions
- 10 × 8 × 10 cm
- Weight
- 130 g
- Material
- PLA with 30% wood fibre
- Hardware
- Micro-screws and ball bearings included
- Glue required
- None
- Battery required
- None
In the box
- 32 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 8 cm
Compact Cardan Joint
€31.50
Power transmission, Alpha series
- Parts
- 28
- Build
- 1 hr
- Level
- Beginner