In the past 12 months, there has been an explosion of interest in flying outdoor sized quadcopter and other multi-rotor machines - driven by the introduction of a number of excellent ready to fly aircraft and the diminishing cost of parts and kits for DIY builders as well. The majority of information available is aimed at the American market, where the hobby is slightly more mature and the opportunities for flying somewhat greater, and also for the DIY community, where kits and individual components are readily available to construct a good quality aircraft - provided you have the skills ...