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Kolb FireFly Ultralight Aircraft Construction:
The welded chrome-moly steel fuselage cage provides the solid feel of the "real" airplane. For strength and durability in airframe structures, aluminum
and steel are superior. The heart of the FireFly, the fuselage cage, is made from strong, factory
welded 4130 chrome-moly steel. We also use 4130 steel in all high stress areas. Compare a
FireFly wing with the typical sailcloth wing of other ultralight's and you will see the difference.
FireFly wings have rigid truss ribs and a massive 5" aircraft aluminum wing spar.
Covered with Stits aircraft covering, there is no comparison!
Although Kolb aircraft are easy to fly and have gentle flight characteristics, they are also high
performance aircraft. We recommend training or some transition training before attempting
flight in our aircraft.
Flaperons are standard equipment and decrease the stall speed by 4-5 mph, but more
importantly, allow for very steep descents without building up excessive airspeed. This is
exactly what is needed to drop into a short field or for an emergency landing.
Kolb FireFly - folding wing and tail
Like all Kolb aircraft, the FireFly has folding wings and tail which allow for easy storage or
trailering. The tail folds up and the wings fold back along the fuselage in about 15 minutes by
one person. Everything stores right on the airframe.
Even Quicker Folding: The horizontal stabilizers/elevators fold upward and the wings fold
rearward staying attached at the universal joint. The FireFly has one more time savings
feature... there is no need to disconnect the lift strut from the wings. They need only be
disconnected from the fuselage cage. The lift strut assembly then folds forward and lies flat
with the bottom of the wing. This saves disconnecting two clevis pins and also saves the effort to
secure the lift struts when trailering. Many of our customers fold and unfold their airplanes
routinely every time they fly -- year after year. This allows for money saving compact storage at
the airport or at home.
Kolb FireFly ultralight aircraft weight considerations:
The builder must exercise care to keep the FireFly as light as possible as it is being built. The FireFly was designed to weigh less than 254 lbs. with
a 40 hp engine, standard windshield, minimal paint and basic instruments. The FAA, in accordance with FAR 103.7 allows 24 lbs. over the 254 lb.
limit for a parachute. The BRS soft-pack weighs 16.5 lbs.; therefore, you have an additional 7.5 lbs. available which will cover the weight of brakes
and full enclosure. Individual FAA inspectors may allow the full 24 lbs. or only the actual weight of the parachute. Both situations are possible
under the present regulations. The bottom line is that you have the option to point out that the full 24 lbs. "may" be allowed under the existing
regulations
.
UltralightNews.com
#1 - Kolb FireFly , 12 ultralight aircraft that give you
the biggest bang for your buck.
