The ultimate LSA utility taildragger

The CUB-S is the result of two years of studies and collaborations with some of the most experienced active Alaskan bush pilots, with the goal of bringing an LSA or Experimental aircraft, as close as possible to being the perfect utility airplane for high demanding operational conditions, while still satisfying different marketing requirements.

The idea in fact, even if starting from the top using a Lycoming IO-320 tuned engine on the prototype, was to develop a sturdy but light airplane, capable to deliver good performance with Rotax 912 ULS, and light enough to satisfy the most exigent customers needing to comply with certain weight restrictions in their countries. The CUB-S accommodates a wide range of engines, starting from the Rotax family and including some tuned derivates (Zlin turbo kit, Rotax RST, Rotax Edge Performance upgrade kits…), and also Italian MW (130 and 150hp), UL Power, Lycoming IO-233 and third party Lycoming preps like Titan ECI Engines or Aero Sport Power engines.

The mission of managing such powers and heavy engines could not be handled by the stock Savage ultralight airframes, so Zlin Aviation moved a step further with the CUB-S, which is an entirely new product.

The company introduced a number of changes to the airframe, several of them coming from the feedback and experience of the most extreme bush flying activity, which is today our reference point considering the technical maturity reached and operational experience involved. Mixing them with all those reliable and effective solutions already used in the other models of the Savage family, led us to the result of a powerful mix of proven solutions, leading to an overall higher capability, payload, and performance, in part thanks to the possibility to handle higher powers.

The fuselage has been entirely recalculated and redesigned:

  • it is longer than in any other Savage;
  • it offers more tail surfaces for an improved stability to counteract higher torques;
  • it features a full-motion jack-screw trim system;
  • it offers the possibility to have a supersize baggage compartment;
  • it has been reinforced for the installation of heavier and more powerful engines;
  • the ergonomics and controls have been entirely reviewed to allow a PA18 Super Cub pilot feel totally at home (same wheel brake pedals).

The wings offer the same proven airfoil, but have been reinforced to handle the higher gross weight. They also offer VGs, long range fuel tanks, and increased flap surface among the options.

While still being a fun, safe, robust and easy airplane for your weekend flights, every CUB-S has purebred blood flowing in its veins, thus offering at any time the possibility to land on the highest mountain slope or glacier, to reach the most isolated snow covered village, or that beautiful secret spot you have discovered, like a river side to go fishing or a fine sand beach to spend the day. From any angle you analyze the capabilities of the aircraft, you will come to the true conclusion that adventure is offered as standard equipment: and with adventure, we mean also real fun, which at the end of the day is the most valuable aspect you should get when investing in your free time.

The CUB-S delivers confidence in the air, feels extremely stable, and if equipped with the power it deserves to shine and perform like a record-hunter, then offers truly new horizons to the pilots, allowing take offs at gross weight in as little as 81ft/25mt or climb up to 8.100 ft /2.500 mt in just 5 minutes. Not forgetting a cruise speed of 112 mph (180 km/h) at 2.500 rpm with 31” Alaskan Bushwheels and 6” extended landing gear.

Emotion does not finish here. We are ambitious, and since the very beginning of the project, our aim is to reach a certain number… we are already leading the LSA market in terms of power to weight ratio with an impressive 1:2,15 hp/kg (4,7lbs/hp). But we want more, 1:2. Yes, exactly that: power to weight ratio, in 1:2 proportion. Work is in progress also in that direction, which will result in the Savage CUB-S “Valdez Edition”. A word is enough to the wise...

The CUB-S is truly the definitive LSA-Experimental-Ultralight tandem taildragger, with unique performance mixed with a sturdy yet stylish airframe, offering more for less, giving more value to your money.

And always, delivering adventure. Every time you fly..




 

 

Characteristics (with Lycoming IO-320 tuned)
Engine Lycoming IO-320 tuned (172hp at 2700rpm)
Fuel tank capacity: 95 liters (25 Gallons)
Propeller: Catto composite propeller 213cm (84 in)
 
Dimensions
Wing span 939 cm (369.7 in)
Length 676 cm (266.3 in)
Height 203 cm (80 in)
Height with Al.Bw 29" and extended l. gear 223 cm (87.8 in)
Wing surface area 14,2 m2 (152.85 sq ft)
Wing chord 156 cm (61.4 in)
Cabin width 67 cm (26.3 in)
Undercarriage width with Al.Bw 29" and extended l. gear 235 cm (92.6 in)
 
Weights
Max take-off weight 600 kg (1320 lbs)
Weight unloaded ULM-LSA version (basic IO320) 370 kg (815 lbs)
Effective load capacity 230 kg (507 lbs)
Max wing loading 42 kg/mq ( 8.7 lb/sqft)
Load factor +6 - 3 G
 
 
Performances
Vne 209 km/h (130 mph)
Max speed s.l. 193 km/h (120 mph)
Cruising speed 75% 180 km/h (112 mph)
Climb rate (single pilot) 10,7 m/s (2100 ft/m)
Climb rate (mtow) 8,5 m/s (1700 ft/m)
Stall speed with full flaps 55 km/h (34 mph)
Max ceiling >5000 m (16350 ft)
Consumption 19-21 lt/h (5/5,5gph) at 80hp, cruise speed, according to LSA rules
Endurance >4 hours
Required take-off space (single pilot) 18 m (60 ft)
Required take-off space (mtow) 25 m (81 ft)
Required landing space (single pilot) 46 m (150 ft)
Required landing space (mtow) 67 m (220 ft)
Cross wind component (max.) 29 km/h (18 mph)
 
 
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Savage Cub-S
 


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