GraviTrax Technology & Engineering GraviTrax Hammer

Gravitrax Hammer

by GraviTrax

$22.95 ~~$25.95~~ /

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Watch the marble slow down, then—whack!—it's blasted forward with fresh speed.

🚀 Boosts speed instantly
🧠 Real physics action
🧩 Expansion part only

The Educator's Note

It solves the common problem of marbles losing speed, making long tracks viable.
Demonstrates physics concepts like kinetic energy in a way textbooks can't match.
Adds a satisfying visual and auditory 'clack' that makes the run more exciting.

Play Specifications

🧒 8 years +

Recommended for ages 8 years +

🧱 Builder

Construction & Engineering

🔬 Scientist

Curiosity & STEM

🔊 Moderate

Medium volume

🏠 Indoor

Living Room / Playroom

👤 Independent Play

Solo / Self-Correcting

🧠 Cognitive

Problem Solving & Logic

🤏 Fine Motor

Precision & Grip

💡 Creativity

Innovation & Imagination

The Educator's Note

It solves the common problem of marbles losing speed, making long tracks viable.
Demonstrates physics concepts like kinetic energy in a way textbooks can't match.
Adds a satisfying visual and auditory 'clack' that makes the run more exciting.

Play Specifications

🧒 8 years +

🧱 Builder

🔬 Scientist

🔊 Moderate

🏠 Indoor

👤 Independent Play

🧠 Cognitive

🤏 Fine Motor

💡 Creativity

Add some serious oomph to your tracks with this kinetic power booster. Instead of letting gravity do all the work, this clever module uses mechanical force to accelerate your marble, helping it climb higher levels or race across longer distances that were previously impossible. It's a brilliant hands-on lesson in kinetic energy for builders aged 8 years+. By figuring out exactly where to place the Hammer to maximise momentum, they aren't just playing—they're engineering solutions to overcome friction and gravity.

Also available in a great value bundle

Perfect for young engineers who want to push the physical limits of their marble runs.

Existing GraviTrax fans aged 8+ looking to extend their tracks.
Builders who want to create longer, faster, or uphill courses.
Kids who love cause-and-effect mechanics and experimenting with physics.

Overcoming the Slow-Down

There is nothing frustrating about building a massive, sprawling track only to watch the marble run out of steam halfway through. That is where the Hammer changes the game. It sits waiting on the track, and the moment a slowing marble rolls into the trigger, the hammer swings down. *Clack!* The energy transfers instantly, launching a second marble forward with renewed velocity.

Engineering in Action

This isn't just a passive piece of plastic; it is a mechanical energy converter. Builders have to think critically about placement. Put it too early, and you waste the boost. Put it too late, and the marble might not have enough force to trigger it. Finding that sweet spot encourages testing, tweaking, and genuine problem-solving logic.

Seamless Integration

Designed to slot perfectly into the hexagonal GraviTrax grid, this expansion bridges the gap between different track sections. It allows you to build longer, more complex layouts without needing a constant downward slope. Note: This is an expansion part and must be used with a GraviTrax Starter Set.

Only 1 In stock

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Gravitrax Hammer

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Why gift givers choose this

Extends Play Life – Revitalises the Starter Set by adding new possibilities.
Screen-Free STEM – Teaches kinetic energy concepts through hands-on observation.
No Batteries – Powered entirely by gravity and mechanical engineering.
High Quality – Precision-engineered by Ravensburger for reliable performance.