* Freestorm: [http://www.ecalc.ch/xcoptercalc.php?ecalc&lang=en&cooling=medium&rotornumber=6&config=flat&frame=550&tiltlimit=90&weight=3200&calc=auw&elevation=500&airtemp=25&qnh=1013&batteries=0&battcap=5000&battri=0.003&battv=3.7&battccont=35&battcmax=50&battweight=128&chargestate=0&s=4&p=1&esc=0&esccont=30&escmax=40&escri=0.015&escweight=25&motor=0&type=0&motorkv=750&motorio=0.5&motorvio=10&motorlimit=370&motorlimittype=w&motorri=0.063&motorlength=35&motorpoles=14&motorweight=108&gear=1&propeller=graupner_e_prop&diameter=9&pitch=5&blades=2&project=F550 DJI F550], Hubsan X4
* Nemen: Vortex 285, Hubsan X4
* Kat: RotorX Atom,[[Nighthawk250]], Hubsan X4, NanoQX
== Legislation ==