I don't care about airflow effected by sails
. I am just trying to calibrate-in believable wind speed magnitude with sails down. I am happy with the wind point cal
I have. It's speed I am after. Satisfied to cal
that at anchor
or motoring with sails down.
Not trying to be exact either, I would settle for +\- 10%
No help from RM here. The manual just says use the adjustable offset feature to "match the WS". No mention of preferred sources of "known good" wind speed.
Monte, markSF, Jim cate:
The up/down wind motoring subtraction does not tell you anything about the correct magnitude of the wind.
At the end of the day it's all about "undue friction in the device", isn't it? That's why you have a calibration feature in your display. Different mast head
assemblies and mast head
assemblies as they age and get dirty will need custom cal.
I was afraid you were going to show me that. But removing the cups and display, rigging
power to the unit and going for a drive. big hassle.
I was just hoping to hear a good technique for getting an accurate reference wind speed to cal with.
Sounds like I need to buy an expensive handheld wind instrument and go to the mast head while someone below adjusts the display from my voice commands. No wonder display manufacturers are a little vague on this step!