Get Ready to Compete!
Build your own RoboSports arena!

Program your robot for sports challenges with this 91-piece expansion set from 1998. A fun way to expand your LEGO Mindstorms experience!

LEGO RoboSports set 9730 - 91 pieces, RCX theme, product photo Pin It
LEGO RoboSports set 9730
🏛 RCX
Set #9730

RoboSports

RoboSports is a charming glimpse into LEGO's early robotics experiments.

🏆 Best For: Ideal for children and teens interested in basic robotics and programming concepts. ⏱ 1.5 hr build 🧩 91 pcs
★★★☆☆ 3.8

Fans appreciate this set as a nostalgic piece of LEGO robotics history, offering a simple and accessible introduction to programming LEGO models. However, some find the building techniques basic and the functionality limited compared to modern robotics sets.

MSRP
$49.99
Best Price
$44.99
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📝 Our Take

RoboSports is a charming glimpse into LEGO's early robotics experiments. Released in 1998 as part of the RCX (Robotics Invention System) line, this set offers a simple introduction to programmable LEGO models, focusing on movement and interaction.

This set is perfect for LEGO enthusiasts interested in the history of LEGO robotics. It provides a hands-on experience with the RCX brick and basic Technic building, making it a great educational tool. The compact size makes it easy to display and experiment with.

Skip this if you're looking for advanced robotics or modern programming capabilities. Contemporary LEGO Mindstorms sets offer far more sophisticated sensors, motors, and programming environments.

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How does this set compare to modern LEGO Mindstorms sets? What programming language is used with the RCX brick? Is this set a good introduction to LEGO robotics for kids? What are some creative ways to modify and expand this set?

🧱 Building Experience

🧩
91
Pieces
⏱
1.5h
Build Time
📊
Beginner
Difficulty
Build Highlights:
  • Simple Technic building techniques
  • Introduction to the RCX programmable brick
  • Experimentation with basic motor control
  • Learning about gear ratios and movement

📈 Investment Analysis

→ Price stable
C+
Investment Grade
⏳ Active
RoboSports, being an early RCX set, holds some nostalgic appeal for LEGO robotics enthusiasts. Its small piece count and relatively low price point limit its potential for significant appreciation. However, its rarity as a vintage robotics set could maintain its value, especially if kept in pristine condition with original packaging and instructions. The set's value is tied to the broader interest in LEGO's early forays into robotics and programming.

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

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RoboSports is a basic introduction to LEGO robotics compared to later Mindstorms sets. While more advanced sets offer greater functionality and complexity, RoboSports provides a simpler, more accessible entry point for beginners. Consider modern Mindstorms sets for advanced robotics or simpler Technic sets for basic building experiences.

📦 Full Parts Inventory - 35 unique parts • 91 total pieces

Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Plate Round 2 x 2...
Part #: 2654 1× Light Gray
Brick 2 x 4 Brick 2 x 4
Part #: 3001 6× Blue
Brick 2 x 2 Brick 2 x 2
Part #: 3003 8× Blue
Brick 2 x 2 Brick 2 x 2
Part #: 3003 4× Yellow
Brick 1 x 2 Brick 1 x 2
Part #: 3004 8× Blue
Plate 2 x 4 Plate 2 x 4
Part #: 3020 2× Blue
Plate 2 x 4 Plate 2 x 4
Part #: 3020 2× Light Gray
Plate 6 x 8 Plate 6 x 8
Part #: 3036 4× Yellow
Slope 45° 2 x 2 Slope 45° 2 x 2
Part #: 3039 4× Yellow
Technic Axle and Pin Connector Angled #3 - 157.5° Technic Axle and ...
Part #: 32016 2× Blue
Slope 33° 3 x 2 with Red '2' over Two Green Stripes Print Slope 33° 3 x 2 w...
Part #: 3298pr0023 1× Yellow
Slope 33° 3 x 2 with Red '1' and Yellow Outline Print Slope 33° 3 x 2 w...
Part #: 3298pr0024 1× Black
Slope 33° 3 x 2 with Red '3', Black Triangle Print Slope 33° 3 x 2 w...
Part #: 3298pr0037 1× Red
Plate 1 x 8 Plate 1 x 8
Part #: 3460 2× Blue
Tyre 43 x 17 Tyre 43 x 17
Part #: 3634 2× Black
Technic Gear 8 Tooth Technic Gear 8 Tooth
Part #: 3647 3× Light Gray
Technic Gear 24 Tooth [Old Style - Three axle holes] Technic Gear 24 T...
Part #: 3648a 2× Light Gray
Slope Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Slope Inverted 45...
Part #: 3660 2× Yellow
Technic Brick 1 x 16 [15 Pin Holes] Technic Brick 1 x...
Part #: 3703 4× Black
Technic Axle 4 Technic Axle 4
Part #: 3705 2× Black
Plate 1 x 4 Plate 1 x 4
Part #: 3710 2× Blue
Slope Inverted 33° 3 x 2, Connections between Studs, Ovoid Bottom Pin Slope Inverted 33...
Part #: 3747b 2× Yellow
Plate 2 x 6 Plate 2 x 6
Part #: 3795 2× Blue
Technic Brick 1 x 12 [11 Pin Holes] Technic Brick 1 x...
Part #: 3895 2× Blue
Brick Special 1 x 1 with Headlight Brick Special 1 x...
Part #: 4070 2× Black
CD-Rom, for 9730 CD-Rom, for 9730
Part #: 4113096 1× [No Color/Any Color]
Playmat, Test Mat for Mindstorms RoboSports Playmat, Test Mat...
Part #: 4122123 1× [No Color/Any Color]
Plate 1 x 10 Plate 1 x 10
Part #: 4477 2× Blue
Wire with Brick 2 x 2 x 2/3 Pair, 20L Wire with Brick 2...
Part #: 5306bc020 1× Black
Tyre 43.2 x 28 Balloon Small Tyre 43.2 x 28 Ba...
Part #: 6579 2× Black
Wheel 43.2 x 28 Balloon Small Wheel 43.2 x 28 B...
Part #: 6580 2× Yellow
Rubber Band Large [Square Cross Section] Rubber Band Large...
Part #: 70158 3× Black
Motor, 9V Mini [Old Style] Motor, 9V Mini [O...
Part #: 71427c01 1× Light Gray
Ball 41mm Ball 41mm
Part #: 72048 2× Yellow
Hose Rigid 3mm D. 18L / 14.4cm Hose Rigid 3mm D....
Part #: 75c18 2× Blue
Rubber Belt Small [15mm ID] [Round Cross Section] Rubber Belt Small...
Part #: 85543 1× White
Disk 45mm x 15mm Disk 45mm x 15mm
Part #: upn0242 2× Black
The set contains a collection of basic Technic parts and standard bricks in blue and yellow, providing a good starting point for simple robotic creations. The inclusion of rubber bands and Technic bricks adds functionality to the models.

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💎 Notable Parts

Black Technic Brick 1 x 16 [15 Pin Holes] (4x) $1.20
Black Rubber Band Large [Square Cross Section] (3x) $0.75
Yellow Plate 6 x 8 (4x) $0.60
Est. BrickLink Part Value
$2.55

💡 MOC Potential

🤖 Small walking robots
🚗 Simple motorized vehicles
🚀 Automated launch platform

Related Articles

📰 RCX News

View all news

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

2 videos found
BlockTalk AI

YouTube reviewers have a neutral sentiment towards the RoboSports expansion (9730-1), often mentioning it in the context of reviewing other LEGO Mindstorms sets. The consensus is that it closely matches the tone of the original Mindstorms 1.0, offering open-ended challenges.

YouTube thumbnail: LEGO Mindstorms 9735 Robotics Discovery Custom Code and Alt Models

LEGO Mindstorms 9735 Robotics Discovery Custom Code and Alt Models

Nonsense Wars • 1.0K views Review
YouTube thumbnail: LEGO Mindstorms 9736 Exploration Mars Full Playthrough

LEGO Mindstorms 9736 Exploration Mars Full Playthrough

Nonsense Wars • 1.0K views Review
Community insights from Reddit discussions and YouTube reviews. Content may not reflect official LEGO positions.

What the Community Says

2 YouTube reviews
BlockTalk AI Summary

Nonsense Wars, in multiple reviews of base Mindstorms kits, consistently points out that Robo Sports provides challenges that require users to modify sample code and implement robotic solutions without complete instructions, similar to the original Mindstorms experience.

Reddit Reviews

No Reddit reviews found

YouTube Reviews

2 videos
YouTube thumbnail: LEGO Mindstorms 9735 Robotics Discovery Custom Code and Alt Models

LEGO Mindstorms 9735 Robotics Discovery Custom Code and Alt Models

Nonsense Wars
1.0K views Review
YouTube thumbnail: LEGO Mindstorms 9736 Exploration Mars Full Playthrough

LEGO Mindstorms 9736 Exploration Mars Full Playthrough

Nonsense Wars
1.0K views Review
Community Content: These reviews are from Reddit and YouTube users sharing their personal experiences. Opinions may vary.

Charts Inventory Statistics

35
Unique Parts
91
Total Pieces
0
Minifigures
Inventory Version: 1

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