fly with the wind
osamu's rc flight

BLADE 450X

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MODEL	BALDE 450X
DISTRIBUTOR	E-flite / Horizon Hobby
FUNCTIONS	Aileron, Elevator, Rudder, Pitch/ Motor control
MAIN ROTOR DIA	28.4" (721mm)
LENGTH	25.8" (655mm)
AUW	28.9oz (820g)
DRIVE SYSTEM	stock 4200KV brushless main motor Edge 325mm carbon main blade for FBL Kontronik Koby 55 ESC w. XT-60 connector Turnigy 11.1V2250mAh Li-Poly battery
RC GEAR	AR7200BX MKS DS95 for cyclic MKS DS95i for tail

review date: April 21, 2013

summary:

450 class single rotor flybarless CP heli with 3 axis gyro.
brushless main motor, belt driven tail.
11.1V2000-2300mAh Li-Poly battery.
2.4GHz system, Spektrum DSMX compatible.

strengths:

light in weight. the stock heli is only 25.3oz (717g). the lighter the better.
bigger than 300X. better for outdoor flight in windy conditions.
very stable, easy to hover, easy to cruise around, easy to flip and easy to hover inverted.
The AR7200BX integrated with Microbeast is really great.

weaknesses:

The stock servos are not so good. At least, any better tail servo is highly recommended.

mods:

I replaced the stock tail servo with MKS DS95i and the stock cyclic servo with MKS DS95. Now the tail holds very well, the cyclic stability and response is greatly improved. I also replaced the stock ESC with Kontronik Koby 55 and set Governor: 2400RPM for the normal, 2700RPM for the ST1 and 2900RPM for the ST2.