title: Little Zipster
THE LITTLE ZIPSTER CO-AXIAL HELICOPTER
Construction Prints & Manual

The Little Zipster is one of the simplest and most charming helicopters ever developed. The charm of this craft lies not only in its extremely compact size, but in its “pilot-friendly” co-axial design: the absence of a complex tail-rotor system and the easy-to-operate control system. This package consists of 3 blueprints showing the dimensions, basic structure, layout and integration of all components, and the construction of the rotor blades; plus, a Manual that includes full specifications, a description of the various systems and components, an explanation of the design, and flying instructions for the Little Zipster.

Being a true helicopter, the Little Zipster will take off and land vertically, hover, and fly backward and sideward as well as forward.


Little Zipster flying
Little Zipster in the air


In the photo on the left, you can clearly see the twin rotor system, in which the 2 sets of rotorblades share a common axis, yet spin in opposite directions to cancel torque.

Below, the extraordinary maneuverability and precise control of the Little Zipster is clearly conveyed.


LITTLE ZIPSTER SPECIFICATIONS

Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11½ ft
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8½ ft
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ft
Empty Weight . . . . . . . . . . . . . . . . . . . . . . . . . . 450 lbs
Gross Weight . . . . . . . . . . . . . . . . . . . . . . . . . .  700 lbs
Useful Payload . . . . . . . . . . . . . . . . . . . . . . . . . . 250 lbs
Rotor System . . . . . . . . . . . . . . Twin, counterrotating
Lower Rotor Diameter/RPM . . . . . . . . . . . . 20 ft/330
Upper Rotor Diameter/RPM . . . . . . . . . . . . 22 ft/300
Engine . . . . . . . . . . . . . . . . . .Mercury 70 HP or equiv
Maximum Speed . . . . . . . . . . . . . . . . . . . . . . . .  80 mph
Cruise Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 mph
Rate of Climb . . . . . . . . . . . . . . . . . . . . . . . . . . 900 fpm
Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 miles
Service Ceiling . . . . . . . . . . . . . . . . . . . . . . . . 11,000 ft


handoff of bag from ground to pilot

The 3 blueprints and Construction Manual provide a part-by-part description of the construction of the Little Zipster. Included are the details for building the Zipster's rotorblades.

LITTLE ZIPSTER Blueprints and Construction Manual:
Only $40 (add $6 post U.S., $16 foreign)

HOW TO ORDER

With a credit card (Visa, Mastercard, American Express), you can order 24 hours a day:
  • ComputerONLINE, via secure order form
    • telephoneby PHONE: 410-663-8022
    • Fax machineby FAX: 410-668-8518

    OR: simply MAIL a check, money order, or credit card number & expiration information to:

    VORTECH, Inc., Box 511-W, Fallston, MD 21047

    Vortech Home | Kits | Choppy | AW-95 | G1 | Scorpion | Skylark | Hot Specials | Engines | Prismz Home