Martin Gregorie wrote on 3/21/2020 6:42 AM:
All you need is:

- a copy of "Circular Airflow" by Frank Zaic ABE Books
https://www.abebooks.com
have a few copies if you don't have one (and you won't unless you were
a keen FF model flyer). Other second hand bookstores should also have
copies

That was my bible over 60 years ago. Twenty years ago, I finally gave it to a
college friend that's still building models, even now. What is the "bible" for
modelers now?

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1