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Hi Jeff - The extension arm is typically used so you can orient the windex behind the mast for better viewing from the cockpit. Best, Trevor
Hi Jeff - The extension arm is typically used so you can orient the windex behind the mast for better viewing from the cockpit. Best, Trevor
Which way to go...
Most people seem to put the extesion arm sticking forward, rather than aft. This may be due to air vortices deflecting from the main making the indicator point in screwy directions if the arm is pointed aft. Forward, the jib may not have as big an effect.
Most people seem to put the extesion arm sticking forward, rather than aft. This may be due to air vortices deflecting from the main making the indicator point in screwy directions if the arm is pointed aft. Forward, the jib may not have as big an effect.
Anenometer and Windex
The most common setup is to mount the anenometer (spinny cups) with it's vane on an arm that sticks forward of the mast. You don't need to see the vane from the helm since it's job is to transmit wind speed and direction to a display in the cockpit area. Most manufacturers offer an extended arm that gets the masthead transducer even higher to avoid windflow problems with other masthead gear (like anchor lights, tri-color, VHF antenna etc). The windex is often used as a visual indicator of wind direction (typically more sensitive) from the helm and needs to be placed within eyesight of the helmsman. Hope this helps, Trevor
The most common setup is to mount the anenometer (spinny cups) with it's vane on an arm that sticks forward of the mast. You don't need to see the vane from the helm since it's job is to transmit wind speed and direction to a display in the cockpit area. Most manufacturers offer an extended arm that gets the masthead transducer even higher to avoid windflow problems with other masthead gear (like anchor lights, tri-color, VHF antenna etc). The windex is often used as a visual indicator of wind direction (typically more sensitive) from the helm and needs to be placed within eyesight of the helmsman. Hope this helps, Trevor
I see that windex now has
a winvane that fits right over the VHF antenna. I think I will use that one next. Vic "Seven"
a winvane that fits right over the VHF antenna. I think I will use that one next. Vic "Seven"
Windex vs wind speed
The most efficient place for the wind instrument is forward and as high away from the mast as you can get it. The end plate vortex of the main affects the instrument the farther back it is. The windex is a different matter. It only looks at apparent wind angle not wind speed. Besides, it would be difficult to read sitting forward of the mast.
The most efficient place for the wind instrument is forward and as high away from the mast as you can get it. The end plate vortex of the main affects the instrument the farther back it is. The windex is a different matter. It only looks at apparent wind angle not wind speed. Besides, it would be difficult to read sitting forward of the mast.
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