|SRB Quark was designed for pilots flying Hirobo XRB or any other counter
coaxial helicopters. It had single blade rotor head, which flies more similar
to larger RC helicopters. With Hirobo original (Japanese patent No.4249801,
international patent pending) design rotor head, this model is the most
stable and easy to control among similar sized models. Flying single rotor
helicopters require more skill and practice than counter coaxial models.
This model is ideal for pilots trying to develop more skill to fly more
|Based on SRB Quark, SRB Quark SG is designed to Despite its size and ease
of handling, SG can fly almost like larger and more advanced outdoor models.
Equipped with collective pitch control, improved battery, gyro, tail motor,
and idle up function, SG can now fly some acrobatics such as loops, rolls,
and inverted flights. After you have mastered XRB or SRB, try and enjoy
SRB Quark SG.