With its sleek, beautifully painted canopy and extremely rigid mechanics,
the Radikal E640 conveys the ideology of Century Helicopter Products bringing
extreme performance back into its lineup. The characteristics of supreme
performance merged with tremendously powerful electric motors and high
voltage offers the pilot increased agility, precision control, and an emotion
inducing flight each and every time.
The canopy design is familiar as it is after all part of the Radikal family.
The intake scoop at the top of the canopy offers induction cooling requirements
demanded by powerful electric motors. Furthermore, the canopy is now easily
removed and easily installed but with the design of the battery tray, the
canopy no longer needs to come off between each and every flight.
For the best performance Century Helicopter Products recommends Thunder Power Batteries
EASY BATTERY ACCESS
With a convenient, compartmentalized battery tray. the E640 offers battery protection
along with ease of access and swapping battery packs. The battery tray can be slid forward
along the sideframe rails to offer CG adjustments in any of the four holes in the side
frame depending on the weight of the battery packs.
The injection molded polymer front electronics mounting compartment offers a modular
platform for ease of mounting various electronics such as your ESC, Flybarless
Electronics, Receiver, Etc..
ALL METAL CNC MACHINED HEAD
The clear anodized aluminum head parts show the upgraded head brilliantly without any
additions required. With an 8mm solid steel feathering spindle and 92 durometer dampeners,
this head is made for extreme 3D performance. The flybarless head has integrated followers
along with triple bearing supported blade grips. Along with the dual ball bearing all
metal swashplate, the entire system offers +15/-15 degrees of pitch travel. The heavy
duty ball links found all over the helicopter indicates this machine means business!
ELEVATOR AND ANTI-ROTATION
The elevator servo is encased in a high strength polymer case thatís been cut for ventilation.
The anti-rotation bracket ensures smooth linear travel without side-to-side slope in the
swashplate offering precision control.
The rudder servo is located at the front of the helicopter offering protection to the
expensive rudder servo in case of a crash. The rudder control system encompasses a bell
crank and thick carbon rods providing direct feel tail control. The tail will always
feel locked in and will not blow out no matter how fast you fly if you are using a high
quality gyro/servo system. The tail boom is also supported by carbon rods. The dual
supported pitch plate providing linear control is icing on the cake.
The motor mount includes a secondary bearing pinion support. This ensures power is
transferred directly to the main gear through the motor shaft pinion. This solid
support offers longer life to the motor shaft bearings and prevents shaft tilt during
those aggressive maneuvers. The motor mount has been drilled to accommodate motor
mount holes in 25mm and 30mm and also for 4mm bolts where 3mm can also be used with
the supplied reducer spacers.
The push-pull control design provides direct straight input with less load on the servos.
This also protects servos in case of a crash as the bellcranks absorb a majority of the
impact in case of a sudden stop. This usually saves servos most of the time and prevents
the necessity of destroying servo gears or worse, completely destroying an expensive
servo. The driven tail design and ease of access to the main gear allows easy main gear
changes in case of accidents. The modular tail transmission gearbox can the separated
from the main mechanics by loosening four screws on either side.
With the 25mm anodized tailboom housing a stainless steel torque tube, the thick boom
not only amplifies the looks of the helicopter, but also offers increased strength. In
addition, the chiseled thin vertical fin finishes off the look of the Radikal E640 by
accentuating weight savings yet offers an aggressive appearance.
The open gear box allows lubrication checks to be easily performed. The high strength
nylon output gear has been molded directly onto the tail output shaft which provides
additional strength without weakening the output shaft with a through pin.
The triple bearing supported tail blade grips with thrust bearing feel buttery smooth
through and through. With an upgrade 6mm tail output shaft and upgraded tail hub, this
is the most robust tail system we have put out to date.
FOR INSANE POWER
The structure of the components have been engineered to accommodate the most powerful
motors on the market today. To enable all that power transfer, an upgrade option has been
made with a machined Delrin helical cut main gear accompanied with a helical cut motor
pinion for 6mm motor shafts.
GREAT LOOKING KIT
The low-slung athletic appearance clearly indicates what this helicopter is
capable of doing in the hands of an advanced 3D pilot.
As the sun shines overhead, you pull into the parking lot at your local flying field. You
step out of your car and walk to your trunk to gather your transmitter and field equipment.
You reach in and hold onto the head of your new Radikal E640 as you slowly pull her out of
your trunk making sure not to catch the tail on anything as it swings out. The shimmering
sun reflects off the high gloss canopy showcasing the beautifully painted fades of blue,
silver and white. As youíre looking around to see if you recognize anyone, someone walks
towards your car and shouts out, "Hey, is that the new E640?" You reply with an assuring
"Yes it is!"
FLY FAST, FLY LOW
As you walk towards the set up tables with your Radikal E640 in one hand and your
transmitter and field equipment in the other, you know youíre about to fly something
special. Even if youíre not the most advanced 3D pilot or the hot shot at your local
field, you know youíll look the part when youíre flying the Radikal E640. With itís
sleek looking canopy and advanced engineering, you know each and every time, this is
a machine that will PERFORM. If youíre lucky enough to be one of the ones that have
equipped youíre helicopter with a high voltage 12S system and motor capable of handling
the voltage, get ready to be surprised by the performance. The Radikal E640 has the
ability to run a motor capable of powering most 700 sized helis yet it is in a smaller,
quicker package. Fly fast, fly low.
* Servos, batteries, motor, ESC, main rotor blades shown in the images above are not included. Slant motor gear, slant main gear, and RotorTech tail blades are optional upgrades.