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How to measure the correct bolt length for your Gen2Updated a day ago

Choosing the correct bolt length for your Gen2 Foil Drive installation is essential for safety, performance, and protecting your equipment. Using bolts that are too short may result in insecure mounting, while bolts that are too long can damage your mast or internal components.

This guide explains how to determine the correct bolt length for your setup and outlines the standard options available.

Why Correct Bolt Length Matters

Using the correct bolt length ensures:

  • Secure and stable mast installation
  • Proper clamping force across the mast and board
  • Protection of internal threads and components
  • Reduced risk of mechanical failure while riding

It is critical that bolts fully engage the threads without bottoming out or being under-engaged.

Step-by-Step Process

To determine the correct bolt length for your setup, follow these steps:

1. Assemble Foil Drive on your board

Build your full setup as it would be used on the water, including:

  • Foil Drive electronics box
  • Mast
  • Board
  • External patch antenna, if using.

2. Use the Foil Drive Driver Tool

  • Insert the Foil Drive driver into the bolt hole on the box
  • Place your fingertip at the edge of the driver where it meets the top of the electronics box
  • Measure the bolt you have against the driver tool to your fingertips to ensure it is the correct length for your board and mast

3. Confirm Correct Fit

Double-check:

  • The bolt tightens securely without resistance at full depth
  • The electronics box or mast is not loose 
  • The bolt does not bottom out before clamping pressure is achieved

If either issue occurs, adjust bolt length accordingly.

Final Check Before Riding

Before heading on the water:

  • Confirm all bolts are correctly sized and installed
  • Ensure even clamping pressure across the unit and mast
  • Re-check tightness after initial assembly and before every session

Important Safety Note

It is imperative to use the correct bolt length for your Gen2 Foil Drive setup. Incorrect bolt sizing can lead to equipment damage or failure during use.

If you are unsure, always re-check your configuration or contact Foil Drive support before riding.

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