Hirobo's new, indoor-outdoor mini electric S.R.B. Quark
“IT FLIES LIKE A . 30 SIZE NITRO”
From the success of Hirobo’s
electric, mini Lama and Sky
Robo comes the S.R.B. Quark,
the next generation mini. An
MRC Product Manager took one
for its maiden indoor-outdoor
U.S. flight. Here are notes from
I recently flew Hirobo’s
new S.R.B. Quark, an
indoor-outdoor mini electric with a conventional
single rotor blade head
and controllable tail
Outdoors in a light breeze was fine,
not anything stronger. Just like a full
size heli there are plenty of control
settings to adjust flight characteristics.
I tried it stock, then dialed in the maxi-
mum amount of control and had the
Quark flying nicely outside, yet with
smooth control in tight indoor spaces.
Flying the S.R.B. Quark
is more like flying a . 30
Compared to our original XRBs with
counter rotating blades, the Quark’s
vertical response is softer, but that
was a good thing for indoor flying as
vertical space can be limited. Tail
control is neat. Not too fast. Not too
slow, and really consistent. It holds
decently in backwards and sideways
flight at moderate speeds. More tail
control can be dialed in if needed.
Indoors the Quark was stable in
neutral hovering, but not so stable
that it got boring. Unlike the XRB, in
forward flight, no aileron corrections
were necessary. Flight times: 8-10 min.
Recharging: about an hour
• If you’re a beginner and want the
feel of a conventional heli to practice
indoors and out, plus low repair costs,
the Quark’s a good choice.
• If your XRB mini or other
counter rotating heli gets boring,
but you’re not ready for a 400-450
class, high rpm electric or a .30-. 50
nitro, the Quark bridges the gap nicely.
• Experienced heli pilots seeking
non sim flying time, will get their fix
buzzing furniture between rooms and
challenging the outdoors.
Length:350mm ( 13. 77”);Width 72mm (2.83”);
Rotor Dia: 355mm ( 13. 98”);Weight 170g ( 6 oz)
International Patent Pending