Specifications

• Gym flyer, Backyard flyer

3.4.25. Hirobo XRB SR (Sky Robo)

• A good trainer for beginners learning to hover

• Expensive (~$300)

• Fairly durable except for foam rotor blades. (Parts 0301001 and 0301002)

• Manufacturer in Japan. Parts availability is good.

• 195 grams AUW,350 mm rotor diameter, 2s LiPo cells

• Small, low headspeed. Perfect to learn hovering orientations. Not suitable to learn FFF.

• Living room flyer

3.5. Summary of helicopter sizes

This table summarizes the main size parameters of the helicopters in the preceeding section.

AUW (All up weight) is in grams, Rotor Diameter is in mm and the Cell count indicates the

"standard" configuration assumed by the manufacturer. Many people are using LiPo packs in-

stead of the original NiCd or NiMh packs, but for the purposes of this table, the original recom-

mendation has been retained.

Table 3.2. Helicopter size summary sorted by AUW

Name AUW Rotor Dia. Cells

Hirobo XRB SR (Sky Robo) 195 350 2S Lipo

Ikarus Piccolo FP (Fun) 280 500 6-8 AAA

Century Hummingbird FP 280 508 7-8 SubC

MS Composit Hornet FP 280 490 7-8 AAA

MS Composit Hornet CP 280 490 7-8 AAA

MS Composit Hornet II 330 560 7-8 AAA

Ikarus Piccolo CP 330 540 8-9 AAA

Maxir SE 350-420 620 3S LiPo

Zoom 400/Shogun 400/Zap 400 500 635 3S Lipo

ARK X-400 580 588 3S Lipo

Align T-Rex 450X 650 640 3S Lipo

Align T-Rex 450XL HDE/CDE 620-670 640 3S Lipo

Ikarus Viper 70/MS Composit Stinger 3 ~900 750 3S1P lipo

Ikarus Viper 90/MS Composit Stinger 6 ~1000 900 3S2P lipo

Ikarus Eco Lite 1150 760 6-8 AAA

Robbe Eolo R22 1280 810 8 SubC

LiteMachines Corona 1250-1500 610 6-8 SubC

Ikarus Eco 8 1300-1500 1060 6-12 SubC

First Helicopter Selection Guide