This is a model for people who appreciate a big helicopter withimpressive German engineered parts. The entire kit ismanufactured in Germany by Vario, it features the proven Variomain rotor head, machine cut Delrin gears, long lastingcentrifugal clutch and clutchbell system, Vario metal tail rotorgearbox, stainless steel torque tube drive, and CCPM control.www.eastcoastvario.comROTORY45
Very easy to assemblekit with excellentGerman quality parts.The<strong>Benzin</strong> Acrobatic is specially designed for the useof a 23cc Zenoah G230 engine. This gasolineengine, available from www.eastcoastvario.com,develops 3.5 horsepower and is capable of pullingthe 14.5-pound <strong>Benzin</strong> Acrobatic through loops, rolls and allFAI-like aerobatics. With a 6.72 to 1 gear ratio and thespecial Vario forward facing tuned exhaust system, themodel is very quiet in flight. The G230 engine possessesbrutal torque to spin 725 mm length blades at +11 to –11degrees at 1650 rpm in Idle-Up. This is a model for pilotswho appreciate a big helicopter with impressive Germanengineered parts. The entire kit is manufactured inGermany by Vario and features the proven Vario main rotorhead, machine cut Delrin gears, long lasting centrifugalclutch and clutch bell system, Vario metal tail rotorgearbox, stainless steel torque tube drive, and eCCPMcontrol. The <strong>Benzin</strong> Acrobatic is an even better gasolineengine powered helicopter than the Vario <strong>Benzin</strong> Trainerthat was introduced six years ago. If you are looking for aserious and rugged acrobatic gasoline engine helicopter,then this model should not be overlooked.I built a Vario <strong>Benzin</strong> Trainer five years ago. That modelflew very well, but was slightly underpowered because Iused an early version Zenoah 23 engine, and that modelweighed 7 kilos (15.5 pounds). In 2004, I started lookingfor another gasoline engine poweredmodel to replace the <strong>Benzin</strong> Trainerbecause I wanted an aerobatic gasser.After flipping through the 514 pageVario 2004 catalog, I decide - I had toorder their new <strong>Benzin</strong> Acrobaticversion. The <strong>Benzin</strong> Acrobaticfeatures new frames and biggerdiameter tail boom, but only weighs 14pounds. The Engine has been placedmore forward and the exhaust systempoints forward. Hence, the aircraft center of gravity willcome out exactly underneath the main rotor shaft with afull tank of fuel. I like the model very much, but the pricetag was $1650 for the kit, $296 for the engine, and $261for the special Vario muffler. These German Vario partsmated flawlessly. The metal swashplate has zero free play.Each mixing arm pivots on two ball bearings. The 45-degree bevel Delrin gears in the tail rotor gearbox runultra smooth and quiet. Each main rotor blade grip issupported on two radial bearings and one thrust bearing. Atoothed belt is used to transfer power from the clutch bellto the first stage gear. An Electronic CCPM controlsystem helps reduce the parts-count. This model is simple,functional, and elegant. Yes, it is worth getting.Mechanics Layout:The 23 cc engine is quite heavy; one G23 weighs as muchas two 90-size glow engines. Gasoline engines may not havethe power-to-weight ratio of high performance 2-strokehelicopter engines, but they have excellent fuel economyand come with a recoil starter. The G23 packs a goodpunch and tremendous torque at low rpm. Most 90-sizehelicopters use gear ratios between 7.75 and 8.45. Thelow revving G23 allows the <strong>Benzin</strong> Acrobatic to get awaywith a very low ratio of 6.72:1. The G23 engine sits on a 346ROTORY
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