Hi All,
Here's a variation of the 'Wind Down' method that my instructor taught me, apparently it's an RAF method. It has always worked well for me - you might find it interesting to compare with other methods.
First set the wind dot, so set 090 on the wheel, move the slider to 0, go down the scale to 20 and draw the dot (or a + which I prefer)
Next set the Track, so turn the wheel to 180.
Now the unusual bit, your dot is now over somewhere to the right, take a straight edge and draw a vertical line downwards from it using the square section at the bottom of the slider to guide you.
Now push the slider so the wind dot is somewhere near the 80kt arc then turn the wheel until your vertical pencil line now lines up with the fan lines.
Finally make a couple of small tweaks, you will need to move the slider again to set the dot exactly on the 80kt arc and turn the wheel again to keep the pencil line lined up with the fan lines.
Now read off TAS 83kts at the centre dot and HDG 166 against the index.
I hope you find this useful!
Deeday - Thanks for nice clear explanations of the methods you use,
Liam and Whoswho - good luck in those exams!