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 Product notice for XRB SR batteries (0301-032)
We have received several reports for broken batteries. After flying XRB
SR, please make sure to disconnect battery from helicopter. Also, if you
are not planning to fly XRB for a while, please charge battery before storing.
Leaving empty lithium polymer battery for a long time can cause overdischarging,
which will break batteries. Keep connecting battery to helicopter will
cause same thing much earlier.
For more detail, please check this information.
For purchasing XRB SR
Due to frequency regulation in each country, only below versions are available
in each regions
Please check appropriate version and place order to our distributor in
your country.
distributor NETWORK
For customer service, please contact our distributor or the shop you purchased
XRB SR. These models cannot be sold/flown in Japan and HIROBO Japan cannot
provide any customer service for overseas XRBs.
| For North America |
0301-907 72MHz full set with Mode 2 transmitter
0301-914 72MHz kit without transmitter |
| For Europe |
0301-911 35MHz kit without transmitter
0301-912 35MHz full set with Mode 1 transmitter
0301-913 35MHz full set with Mode 2 transmitter |
| For Asia |
0301-908 40MHz kit without transmitter
0301-909 40MHz full set with Mode 1 transmitter |
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X.R.B(Cable) -SR(RC)
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Can we convert cable version to SR?
Is there any conversion set?
Several parts such as cabin, tail truss or blades are the same. However,
main frame and electronics are completely redesigned just for SR. Therefore it is impossible to convert cable XRB to XRB SR.
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Which one is better, cable or RC?
Both models have advantages.
 Cable Lama Cable version is recommended for people with no RC experience.
- Just open box and you can start flying.
- No battery charge required.
- No time limits (But please take some rest once in 20 minutes or so)
- It cannot fly out of control.
- Running costs are cheaper.
RC -SR Recommended for people with some RC experience.
- You can fly more freely.
- It can fly 15 minutes.
- There is no cable to limit flight.
- It maneuvers better.
- You can use your transmitter (Futaba, JR or Sanwa. More than 4ch with PPM)
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How long can it fly?
With lithium polymer battery included in kits, flight time is 15 minutes.
Li-po charger is included in kits. Charge time is approx 1-1,5 hours. |
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What will brake if I crash?
Main blades are most fragile. For safety reasons, they are made from foam.
3 sets of spare main blades are included in the kit.
Is a counter rotation helicopter easier to fly than single rotor ones?
Counter rotation is very stable for hovering. First time pilots can fly
XRB with little practice. It has a unique structure. It is very stable
and responsive. After some practice, you can land on a chair.
With no wind, XRB can fly hands off. However, due to its design, it is
impossible to do acrobatic flight.
Does tail rotor move?
Dues to its structure, tail rotor is not necessary.
How can XRB turn without tail rotor?
Two rotors are turning to opposite direction. If rotor RPM is different,
it will cause counter torque. XRB uses this counter torque to turn. Gyro
automatically adjusts motor speed for stable hovering. Technology
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What is the difference in rotor head?
Main mast...SR main mast is 20mm longer than cable version. It can improve maneuver
and stability.
Stabilizer...Lightweight stabilizer can reduce resistance and weight. |
Above: XRB stabilizer Below : SR stabilizer
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What is different with coreless motors?
Reason for adopting this coreless motor is to cut weight. There are many
additional improvements with this motor such as noise reduction, and better
durability.
Please note : Even though SR flight time is 15 minutes, please try to land/rest
once in several minutes. Keep flying 15 minutes can wear down motors very
fast.
This coreless motor cannot be used for cable XRB. |
Left : XRB SR coreless motor (18g)
Right : XRB motor (32g)
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How far can SR go?
Maximum range for this transmitter is approx. 70m-100m. However, SR will
be hard to see beyond 20m due to its small size.
There is fail safe in SR. If signal from transmitter stops for any reason, SR can land softly.
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Can I fly outside?
XRB is indoor only because it cannot fly even with little wind. It cannot
fly outside.
Can I use my transmitter?
There is transmitter less versions. Transmitter must be
- Futaba / JR / Sanwa
- More than 4ch
- With reverse
- PPM type transmitter
- Mixing cannot be used.
We have not tried transmitters from other manufacturers and they may not
work properly with XRB SR.
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Even first time pilots can hover with some practice. 
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