Not sure where to post this. I have a Super chipmunk 52 that is probably 8 years old, don't know the mfg. How do I find the CG. Has a tapered wing. See picture.

You'll find links to some online CG calculators in the sticky thread at the top of the thread listings. They are tried and true.

Enter a stability % of 8% and then repeat it for 0%. The two results it gives will be your max range of CG locations. And approach the 0% location with much care. It's not going to go wild but it'll be very unforgiving of mistakes or inattention.