Davis J-Base f/WindTrak 10.Sport f/Side, Top or Front of Mast Mounting

The Davis J-Base for WindTrak 10.Sport is a versatile mounting bracket designed for flexible anemometer installation on marine masts. This accessory allows side, top, or front mounting on the mast of any vessel, from large cruising yachts to small dinghies. As standard equipment with the WindTrak 10.Sport wind speed indicator, the J-Base is also available as an optional upgrade for the WindTrak 15 model, making it an ideal choice for mariners who need installation flexibility without replacing existing equipment.

The J-Base is engineered from glass-filled polymer, a material selection that balances structural rigidity with corrosion resistance—a critical requirement for marine environments where salt air exposure accelerates degradation of metal fasteners and brackets. The compact dimensions (1 x 1 x 1 inch) and minimal weight (0.2 lbs) ensure the mounting bracket adds negligible load to the mast while maintaining secure positioning for accurate wind data collection. The J-Base's multiple mounting orientations allow installation in locations that optimize wind exposure and minimize interference from sails, rigging, or superstructure.

This mounting bracket serves sailors, weather researchers, and marine equipment users who operate across varying vessel types and mast configurations. The side, top, and front mounting options accommodate different deck layouts, rail systems, and structural designs—eliminating the need for custom fabrication or multiple bracket purchases. For operators upgrading from earlier WindTrak models or installing supplementary anemometers on existing systems, the J-Base provides a standardized, reliable solution that maintains Davis Instruments' reputation for precision weather instrumentation.

The J-Base is part of Davis Instruments' modular anemometer system, where compatibility with multiple mounting positions reduces installation complexity and cost. Whether you're setting up a new weather station, replacing a damaged bracket, or adding redundant wind measurement capability to your vessel, this proven bracket design delivers the flexibility and durability required for long-term marine service.