Why B&G WS730 wind transducer rather than CV7?

[seandepagnier]

with ultrasonic:

1) incorrect readings in heavy rain.
2) Lower resolution for wind direction. Typically 1-2 degrees instead of 0.1 degrees for mechanical vanes. Especially bad in light wind.
3) Most are not heel compensated and designed to be mounted to a fixed platform. I doubt the accuracy even on the "3d" one is anywhere as good as a vane.
4) issues with ice (before mechanical vane?)

Other than this, the power consumption is much higher, the trisonica states 500mW. They also state accuracy of 1 degree. This is no where near as good as mechanical units. They don't even have a price or are in stock either.


How could a 3d mechanical vane work?

[ShineOn]

Originally Posted by Joli

For the average guy doing distance racing I think good sails, good polars and a good understanding of the ladder concept will put them on the podium more often then not.

But you can't get, or reference, good polars without good wind data, so isn't that a circular argument?

[Dockhead]

Originally Posted by ShineOn

But you can't get, or reference, good polars without good wind data, so isn't that a circular argument?

Can't get OR USE good polars without good wind data.

[250224]

Originally Posted by seandepagnier

with ultrasonic: ..
the power consumption is much higher, the trisonica states 500mW.

For the CV7 they [1] state 9.5 mA. Thus 114 mW.

[1]: page 14 in https://media1.svb-media.de/media/sn...f835c48a21.pdf