Hirobo SRB Quark SG
From RC Helicopter Wiki
| Hirobo SRB Quark SG | |
|---|---|
| Manufacturer | Hirobo |
| Class | Collective pitch electric |
| Build | Kit,RTF |
| Level | Intermediate to Advanced |
[edit] Description
The Hirobo S.R.B. Quark SG (aka Quark SG, Quark CP), is a micro-sized collective pitch electric helicopter manufactured by Hirobo Corporation. “S.R.B.” stands for Single Rotation Blade to distinguish it from Hirobo’s coaxial “X.R.B.” helicopters. “SG” stands for second generation that follows the original Quark which is a fixed pitch electric helicopter. The Quark SG was announced around February 6, 2010 at the Nuremberg International Toy Fair and is expected to be released for sale in April 2010.
[edit] Specifications
- Gear Ratio: xx:1 (Main Blade), xx:1 (Tail Blade)
- Length: 361 mm
- Height: 146 mm
- Width: 72.5 mm
- Main Rotor Diameter: 373 mm
- Tail Rotor Diameter: 106 mm
- All Up Weight: 200 g
[edit] “Second generation” features
- CP head and 3D flight capable.
- The Quark SG is capable of loop, roll and inverted flight.
- Flybar moved below the main blades.
- New high precision tail gyro.
- Status light moved to the rear of the heli for increased visibility.
[edit] Stability features
Flight stability is a result of a combination of design features that includes:
[edit] Safety & damage resistance
Safety features of the Quark make use of polystyrene (Styrofoam) blades (semi-symmetrical airfoil), and a flybar with rubber paddles. In a crash, the blades are meant to break which helps to absorb impact and prevents damage to other components.
[edit] Components
The helicopter uses a brushless main motor and a direct drive brushless tail motor. Both are outrunner. The main motor is the same as the Quark SRB 1st gen, but just runs at a higher voltage (3 cell lipo instead of 2 cell)
[edit] Lipo battery
A 3-cell 480mAhLipo. The stock battery is reported to yield a flight time of 10 minutes.
[edit] Versions
- 40MHz or 72MHz FM-PPM RX (Futaba, JR, Aitronics/Sanwa compatible)
- Hirobo stock 4ch TX for XRB or SRB FP is usable only with normal mode.
- 3 versions available: assembly kit, RTF, RTF with transmitter.
[edit] Kit contents
assembly kit:
- main frame, head and tail parts
- canopy (cabin)
- landing skid
- horizontal stabilizer and tail fin
- battery holder
- SRB control unit with gyro sensor and LED lamp
- 3 SRB servos
- 4 sets (8 pieces) of main rotor blade
- 4 one-piece tail rotor blades
- 3S480mAh Li-Poly battery
- charger with AC adapter
- blade balancer
- extra screws
- +screw driver, plastic - driver, hex Allen wrenches 0.89mm, 1.5mm
- decal
- instruction manual
- registration card
receiver crystal is not included.
[edit] Price
- MSRP 58,000JPY or about $650 USD as of February 2010
[edit] Hirobo upgrades
[edit] Other upgrades
Common aftermarket upgrades from other vendors include:
[edit] Known issues/shortcomings
Design/Manufacturing items
- Foam blades are fragile and break easily. It is for safety and to protect the head mechanism in case of crush.
Flight issues
Radio system issues
- No modern 2.4 GHz system.
Hirobo eccentricities
[edit] Modifications
[edit] Tips
Flying aircraft is a dangerous activity and can cause injury or even death. Follow all safety procedures as outlined in the manual and local regulations.
Tips for the beginner
General tips
[edit] Trivia/interesting tidbits/rumours etc.
- A Quark with collective pitch (CP) was rumoured in August 2009 for release in late 2009 but was formally announced as the at the Nurnberg International Toy Fair, around February 6, 2010. The assembly kit was released March 31, 2010 in Japan.
[edit] Quotes
[edit] Gallery
[edit] Links to selected quark videos
[edit] External links
Hirobo Quark official website
Main discussion forums
Manual
Mods and repairs
Paraphernalia
Parts and product support
- Model Rectifier Corporation (MRC) US distributor and support.
- Yrbuy.com The Brotherhood's favourite Quark supplier (Augusto).