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Old Nov 13, 2011, 09:34 PM
blacknoise is offline
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Speed = spectacular potential
United States, TX, Austin
Joined Jan 2011
274 Posts
Reading this review really sold me on the HK450 as a viable clone. Thus, I actually bought two kits, one to fly and the second for parts. Electronics wise, I went with your exact setup with one exception, I purchased HK 922MG servos for cyclic.

Though, for those considering this clone kit, let me shed some light on how my experience differed tremendously from this review:

To build:
* I removed every screw/bolt and added thread locker
* Carefully balanced rotor head and blades
* Visually inspected all parts

An here is what happened when this carefully setup heli flew:
* Multiple screws have stripped, requiring replacement
* During the second ever attempt to hover the feathering shaft threading gave way, shooting the rotor blades with grips still bolted across my yard at 2700RPM nearly injuring me
* The motor pinion was poorly milled, leaving sharp fins that ground down main gears until I finally replaced it with an Align pinion
* On 11th flight, the first Go-Teck tail sevo fried causing a minor crash
* Bearings in the tail box were so soft they deformed, caused vibration I blamed on the shaft, causing hours of trouble-shooting
* Eventually, the tailbox bearings sheered the raceway casing, wrapping up in the belt and destroying most of the tail parts
* A second Go-Teck servo fried and died within 1 hour of flight
* Two tailbooms have sheered in flight due to defective manufacturing, but aided by the bearing vibration
* Bearings in the main rotor head have worn out after about 80 mins of flight

Total, this heli has flown no more than 80minutes, has never been in a serious crash, yet has now cost me well over $500 when you add in parts. Most importantly, I have spent nearly 100 hours assembling, repairing, tuning, and researching all the problems. In my experience at least, this HK450 has been a nightmare. As a result, I would certainly not recommend this product.
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