The Big Hammer for Gravitrax marble circuits accelerates the marble to regain height, for example.

No additional marble is required: the marble entering the module is accelerated by the hammer, which is triggered when the marble passes through.

The mechanism is easily wound up using a key attached to the module.

The module is symmetrical, so the mechanism can be wound up on either side, depending on the configuration of your tracks.

Several force settings are possible:

• Several springs supplied
• Two possible spring hook settings
• Two different hammer positions when reassembling the mechanism

This allows you to accelerate the marble with more or less force. In the most powerful configuration, the ball can travel up to 18cm if the circuit is rigid enough!