A post on RCGroups got updated last night. A new variable pitch multi-rotor craft got posted, and it looks very slick. This got me motivated again in continuing my work in this field.
While looking for the heli parts that were used in the above post, I came across this RC helicopter manuals collection of helis I never heard before. It’s good to know about it and see how other helis are designed and put together, for future ideas.