Beginners can also get good answers to almost all their questions right here in the beginner forum.
There actually isn't anything about electric motors that would be specific to helicopters or fixed wing or anything. If the specs suit your application, they suit that application as well as any other electric motor with those specs.
And if you want to post in forum that would have really good attendance from electric gurus, RCU has a hundred or maybe a thousand forums dedicated to electric.

OK, maybe not quite that many. But they're just down the page on the list of forums.