I have been soldering since I was a kid (I grew up in this sport, as my dad has always been a flier) and where airplane soldering is concerned, I have never used anything but plain ol' electrical soldering. Servo wires, clevises, and landing gear, it's all the same.
Read the "How To" I wrote for RCU Magazine:
http://www.rcuniverse.com/magazine/a...article_id=172