AM
Your not the only one.
The CRP1 is OK to 2or3 knots & degrees.
I have just done my ATPL Gen Nav & Flight Planning with a CRP5.
We are OK to within 4or5 degrees & up to 8to10 knots. Now I can get within 2-3 degrees & 2-3KTS @ 450KTS TAS calculations, normally.
Alot of it depends on how well your unit is made, I had major problems with my CRP5 & had to file the edges of the sliding plate & loosen the screws on the rotating degree plate for much more free movement, speed is essential in ATPLs.
I agree with Tacpot, get another student to help you understand it. It really is helpful if you have a mental block.
Wind-down is more preferable to learn if you need to calculate wind, drift, True Track from Heading & Wind. It is the taught method for the ATPLs.
Wind-up is good enough if you are only going for your PPL & need to pass the Nav written.
Whichever way you go, don't worry, it will suddenly all make sense & be accurate. Just like turning on a lightbulb.
Enjoy your flying.
FB
