I use them on a raptor x50 and broke one in the air to 3 minutes after takeoff, with catastrophic consequences for my helicopter, so I think they should review the quality of them, and not buy time until HK guarantee quality
i am so sorry, but i wouldnt use them on that size of heli, because you could kill someone, not to mention that they are not fitting trex blade grips, they are thinner for 1.5 mm, deformed and cracked!!! not good!!! dont use them!!! this is my friendly advice!!!
That's what I said also - !WOW!.
Meanwhile I bought more of these blades and also some other 105 and 70 mm that seem to be from same manufacturer, and most are quite ok. I only wanted to inform you, that some combinations are not usable. But as the price is ok some failures are also ok.
Thanks for answer.
Of course, I know this, but the difference is too heavy to balance. I tried to balance, and I needed 5 M4 washers in the middle of the lighter blade to compensate.
Small differences I wouldn't care.
These aren't bad for the price at all. Nice solid cast. Looks similar to the Align, but without the Align watermark
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On my first test flight, tail blade snapped straight off. very poor quality. i was hovering, not doing any 3d and it just snapped where the bolt goes thru. very very poor quality. eventhough it looks like align blades without watermark, it is by far less of quality then align
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Please watch out with these blades! Mine snapped off the first time I tried them. Headspeed wasn't high, I wasn't even flying. One of them hit me in the face and now I'm probably scarred for the rest of my life! It gave me a severe cut and I had to let it stitched in the hospital. I told Hobbyking about this but after an promise to discuss it with the management I don't get any response.