Get Moving!
Build a world of mechanical creations

Unleash your inner inventor with 243 pieces of LEGO Motion Madness! Build models that move, fly, and bring your imagination to life.

🏛 Inventor
Set #4090

Motion Madness

Motion Madness is a solid introduction to LEGO Technic.

🏆 Best For: Children and young teens interested in learning basic Technic mechanisms ⏱ 1.5 hr build 🧩 243 pcs
★★★☆☆ 3.6

A decent entry-level Technic set suitable for young builders. While not particularly exciting for experienced builders, it provides a good introduction to basic mechanical concepts and offers a simple, engaging building experience.

📝 Our Take

Motion Madness is a solid introduction to LEGO Technic. This set provides a fun and accessible way to explore basic gear mechanisms and movement, making it ideal for young builders eager to learn about how things work.

This set is perfect for children and beginners interested in Technic concepts. With a manageable piece count and clear instructions, it offers a rewarding building experience that's both educational and entertaining. The bright colors add to its appeal.

Skip this if you're an experienced Technic builder looking for a complex project. This set is designed for novices; consider more advanced Technic sets with intricate functions and higher piece counts for a greater challenge.

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How does this set compare to other entry-level Technic sets in terms of complexity? What are some alternative models you can build using the parts from this set? Is this set a good introduction to Technic for young children? What are the key mechanical principles demonstrated by this set?

🧱 Building Experience

🧩
243
Pieces
1.5h
Build Time
📊
Beginner
Difficulty
Build Highlights:
  • Simple and clear instructions make it easy to follow
  • Introduces fundamental gear and axle concepts
  • Bright and colorful design enhances visual appeal
  • Offers interactive play with moving parts

📈 Investment Analysis

↓ Price declining
C+
Investment Grade
⏳ Active
Motion Madness, while a retired set from the Inventor theme, presents a mixed bag for investors. Its relatively low piece count and original MSRP limit its potential for significant appreciation. However, its age and the nostalgia factor associated with early Technic sets could make it a worthwhile addition to a niche collection. The falling price trend suggests caution, as the market may be saturated or demand is waning. Investors should monitor its price and consider its rarity and completeness before making a decision.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

Compare Similar Sets

Motion Madness is a basic Technic set designed for beginners. Compared to more advanced Technic sets, it lacks complexity and sophisticated functions. However, it serves as a great starting point for young builders interested in learning about gears and axles. Alternatives include newer entry-level Technic sets that may offer more modern building techniques and features, but this set's simplicity might be preferred by some.

📦 Full Parts Inventory - 80 unique parts • 245 total pieces

String Cord Medium Thickness 487cm String Cord Mediu...
Part #: 14728c487 Red
Tile Special 1 x 2 Grille with Bottom Groove Tile Special 1 x ...
Part #: 2412b Yellow
Tile Special 1 x 2 Grille with Bottom Groove Tile Special 1 x ...
Part #: 2412b Blue
Plate 2 x 2 Corner Plate 2 x 2 Corner
Part #: 2420 Yellow
Plate 2 x 2 Corner Plate 2 x 2 Corner
Part #: 2420 Black
Plate 2 x 2 Corner Plate 2 x 2 Corner
Part #: 2420 Medium Blue
Technic Brick 1 x 10 [9 Pin Holes] Technic Brick 1 x...
Part #: 2730 Blue
Technic Slope Long 1 x 6 with 3 Pin Holes Technic Slope Lon...
Part #: 2744 Yellow
Technic Pin with Friction Ridges Lengthwise and Center Slots Technic Pin with ...
Part #: 2780 Black
Lever Small Base with Black Lever Lever Small Base ...
Part #: 298c02 White
Brick 2 x 3 Brick 2 x 3
Part #: 3002 Blue
Brick 2 x 2 Brick 2 x 2
Part #: 3003 Blue
Brick 1 x 2 Brick 1 x 2
Part #: 3004 Blue
Brick 1 x 6 Brick 1 x 6
Part #: 3009 Black
Brick 1 x 4 Brick 1 x 4
Part #: 3010 Blue
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Medium Blue
Plate 2 x 4 Plate 2 x 4
Part #: 3020 Black
Plate 2 x 3 Plate 2 x 3
Part #: 3021 White
Plate 2 x 2 Plate 2 x 2
Part #: 3022 Black
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Black
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Medium Blue
Plate 1 x 1 Plate 1 x 1
Part #: 3024 White
Plate 2 x 8 Plate 2 x 8
Part #: 3034 Medium Blue
Slope 18° 4 x 2 Slope 18° 4 x 2
Part #: 30363 Blue
Slope 45° 2 x 2 Slope 45° 2 x 2
Part #: 3039 Blue
Slope 45° 2 x 1 with Bottom Pin Slope 45° 2 x 1 w...
Part #: 3040b Blue
Tile 2 x 2 with Groove Tile 2 x 2 with G...
Part #: 3068b Medium Blue
Plate Special 3 x 2 with Rounded End, Hole Plate Special 3 x...
Part #: 3176 Blue
Technic Axle and Pin Connector Angled #1 Technic Axle and ...
Part #: 32013 White
Technic Axle and Pin Connector Angled #6 - 90° Technic Axle and ...
Part #: 32014 Blue
Technic Axle and Pin Connector Angled #3 - 157.5° Technic Axle and ...
Part #: 32016 Medium Blue
Technic Axle and Pin Connector Angled #2 - 180° Technic Axle and ...
Part #: 32034 White
Technic Axle Connector with Axle Hole Technic Axle Conn...
Part #: 32039 Black
Technic Axle 2 Notched Technic Axle 2 No...
Part #: 32062 Black
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Ridges Technic Brick 1 x...
Part #: 32064c Yellow
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Ridges Technic Brick 1 x...
Part #: 32064c Blue
Technic Axle and Pin Connector Toggle Joint Smooth Technic Axle and ...
Part #: 32126 Light Gray
Technic Gear 12 Tooth Double Bevel Technic Gear 12 T...
Part #: 32270 Light Gray
Large Figure Weapon, Claw Hook with Axle Large Figure Weap...
Part #: 32551 Yellow
Technic Pin Long without Friction Ridges - Single Slot Technic Pin Long ...
Part #: 32556a Light Gray
Slope 33° 3 x 2 Slope 33° 3 x 2
Part #: 3298 Blue
Plate 1 x 8 Plate 1 x 8
Part #: 3460 Yellow
Wheel with Split Axle hole Wheel with Split ...
Part #: 3482 White
Plate 1 x 3 Plate 1 x 3
Part #: 3623 White
Technic Gear 24 Tooth [New Style with Single Axle Hole] Technic Gear 24 T...
Part #: 3648b Light Gray
Technic Gear 40 Tooth Technic Gear 40 T...
Part #: 3649 Light Gray
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Slope Inverted 45...
Part #: 3660 Blue
Slope Inverted 45° 2 x 1 Slope Inverted 45...
Part #: 3665 Blue
Plate 1 x 6 Plate 1 x 6
Part #: 3666 Medium Blue
Technic Pin without Friction Ridges Lengthwise Technic Pin witho...
Part #: 3673 Light Gray
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 Yellow
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 Medium Blue
Technic Brick 1 x 4 [3 Pin Holes] Technic Brick 1 x...
Part #: 3701 Blue
Technic Axle 4 Technic Axle 4
Part #: 3705 Black
Technic Axle 6 Technic Axle 6
Part #: 3706 Black
Technic Axle 8 Technic Axle 8
Part #: 3707 Black
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Yellow
Plate 1 x 4 Plate 1 x 4
Part #: 3710 Black
Technic Bush Technic Bush
Part #: 3713 Light Gray
Slope Inverted 33° 3 x 2 [No Connections between Studs] Slope Inverted 33...
Part #: 3747a Blue
Slope Inverted 33° 3 x 2 [Connections between Studs] Slope Inverted 33...
Part #: 3747b Blue
Technic Axle Pin without Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 3749 Tan
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Medium Blue
Plate 2 x 6 Plate 2 x 6
Part #: 3795 Blue
Technic Brick 1 x 6 [5 Pin Holes] Technic Brick 1 x...
Part #: 3894 Blue
Wedge Plate 8 x 4 Wing Left Wedge Plate 8 x 4...
Part #: 3933 Blue
Wedge Plate 8 x 4 Wing Right Wedge Plate 8 x 4...
Part #: 3934 Blue
Brick Round 2 x 2 with Axle Hole Brick Round 2 x 2...
Part #: 3941 Yellow
Cone 2 x 2 x 2, Open Stud Cone 2 x 2 x 2, O...
Part #: 3942c Yellow
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Plate Round 2 x 2...
Part #: 4032a White
Brick Special 1 x 1 with Headlight Brick Special 1 x...
Part #: 4070 Blue
Technic Beam 1 x 2 Thin Technic Beam 1 x ...
Part #: 41677 Medium Blue
Rubber Band / Belt Holder 2 x 6 x 2 1/3 Rubber Band / Bel...
Part #: 41753 Dark Gray
Wedge Curved Inverted 6 x 2 Right Wedge Curved Inve...
Part #: 41764 Medium Blue
Wedge Curved Inverted 6 x 2 Left Wedge Curved Inve...
Part #: 41765 Medium Blue
Slope 33° 3 x 1 Slope 33° 3 x 1
Part #: 4286 Yellow
Slope 33° 3 x 1 Slope 33° 3 x 1
Part #: 4286 Black
Slope Inverted 34° 3 x 1 without Internal Stopper Slope Inverted 34...
Part #: 4287a Blue
Technic Axle Pin with Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 43093 Blue
Plate 1 x 10 Plate 1 x 10
Part #: 4477 Blue
Tyre with Centre Groove [Tightrope Guide Wheel] Tyre with Centre ...
Part #: 44799 Black
Technic Axle 3 Technic Axle 3
Part #: 4519 Light Gray
Brick 1 x 10 Brick 1 x 10
Part #: 6111 Black
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 White
Plate Round 1 x 1 with Solid Stud Plate Round 1 x 1...
Part #: 6141 Black
Technic Axle and Pin Connector Perpendicular Technic Axle and ...
Part #: 6536 Dark Gray
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Technic Pin Long ...
Part #: 6558 Black
Technic Axle 3 with Stud Technic Axle 3 wi...
Part #: 6587 Dark Gray
Technic Pin with Friction Ridges Lengthwise and Towball Technic Pin with ...
Part #: 6628 Black
Rubber Band Medium (Square Cross Section) Rubber Band Mediu...
Part #: 71156 Black
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Hinge Plate 1 x 4...
Part #: 73983 Blue
This set includes a variety of Technic axles, pins, and connectors in blue and black, providing a good starting point for building simple mechanical models. While not particularly rare, the quantities of these parts are useful for MOC builders looking to experiment with basic Technic functions.

🛒 Where to Buy

💎 Notable Parts

Blue Technic Axle Pin with Friction Ridges Lengthwise (8x) $0.80
Black Technic Axle 2 Notched (8x) $0.64
Black Technic Pin with Friction Ridges Lengthwise and Center Slots (7x) $0.70
Blue Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Ridges (7x) $0.70
Black Technic Axle 4 (6x) $0.72
Est. BrickLink Part Value
$3.56

💡 MOC Potential

🚗 Small car or truck variants using the included wheels and axles
🤖 Simple walking or moving robot with basic functionality
🌳 Windmill or water wheel powered by Technic gears

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Charts Inventory Statistics

80
Unique Parts
245
Total Pieces
0
Minifigures
Inventory Version: 1