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On 23 Jul 2005 06:58:36 GMT, (Lauri Tarkkonen)
wrote:

[Brian]
Wind vanes fail from wearout and from wind gusts.
Wind vanes are prized by blue water cruisers by all accounts

[Brian]
Surely you cannot suppose
that wind vanes DON't wear out, or that they cannot be overwhelmed in
a storm gust?

[Lauri]
Every part in a boat wears off, but a quality windvane is no worse than
other equipment and you can expect a service age of more than 20 years
of a quality windvane if you treat it properly.

A servo pendulum windvane has much more power than the autopilots
usually seen on yachts.

- Lauri Tarkkonen

Lauri,

you seem curiously defensive of windvanes - do you have some monetary
interest in these devices?
Do you feel that an increase in power implies an increase in
reliability?

As to offering opinions - it is indeed a strange thing, but engineers
are often willing to offer engineering opinions on equipment
reliability even on examples of products they have not personally
used.
Does this seem presumptuous to you?

Respectfully

Brian Whatcott Altus, OK