When an RC helicopter crashes during specific maneuvers like rainbows, blackbox data analysis can reveal mechanical failures such as one-way bearing slippage, which causes current drops while the motor remains operational, indicating a mechanical rather than electronic issue.
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Align TB60 Crashed AGAIN - Rotorflight Blackbox AnalysisAdded:
Hey guys, hope you're well.
So, I've got the Align TB60 after I have changed the one-way bearing. I've just done a flight with it, just a standard flight, just to make sure it's still kind of tuned correctly, flying well, and it was flying super well. Obviously, I didn't try rainbows. I'm saving it for this um for this video.
Uh but yeah, it'll be a real shame if it crashes again because it's just it's just flying so so well. I'm so happy with it. Um but basically, all I've done is I've changed you should have seen the video for that, um and we're just going to go and do rainbows. We definitely know 100% the motor's not cutting out. The motor is still going on. Um but when we do rainbows, it seems that the one-way bearing is slipping. Now, I didn't change the front drive um shaft because it's just a lump of metal. I can't see anything wrong with it. So, even if I was to get another one, you know, it's just another lump of metal. So, I I I can't really see um that being kind of an issue, but there is a new bearing. So, let's take off and just see what happens. Travel active.
So, I'll take off. We'll just do a couple of circuits, and then we'll just go straight straight for rainbows.
So, as you could see, it's [music] it's so stable. This is completely hands-off.
Completely hands-off.
And it's just [music] flying so well.
That was me there.
Um it's just so locked in.
Like tail stops are brilliant.
It's It's so well.
Um yeah, we'll just see what happens.
So, we'll set it up.
Not too high.
Not too far.
And uh yeah, let's do some rainbows and see what happens.
Oh, here we go.
Oh.
Yeah, that was bad.
That was really bad. Really, really bad.
Uh what can I do?
I am going to speak to Align and uh yeah, just completely fed up with this helicopter, to be honest. Nothing I could do about it.
Just loses everything. You can't even do a proper auto rotation or anything on this.
Anyway, it is what it is.
So, there it is, guys. Completely broken again.
Okay, guys. So, just showing you the logging. So, this is the rotor flight black box and exactly the same thing happened. So, nothing new if you watched the other video.
There's me just about to start the rainbow there. Okay. So, positive and then I put the negative pitch there and you could see straight away there's my current. It drops.
So, there it's at about 57 and then we get another massive drop down to sort of 13. So, this [snorts] is when I don't know what it is, one-way bearing doesn't work or something disengages. It's something mechanical.
Okay, we can see the motor is still on.
Okay, and it's still on all the way.
Okay, so this is here where I crashed, that bit there. Well, my crash. Okay.
Um and then my motor is still on because I still see the head speed. And that orange line, this is where I put my throttle uh cut. So, I put a throttle cut. You can see there that RPM, this line here, RPM's dropping now because the motor switched off.
And then it does the little kick because this is where it engages. You could see there, this is where it did the little kick.
Um so, it's exactly the same exactly the same issue. There's nothing nothing different nothing electronic something mechanical.
So, not really sure what I'm going to be doing.
Anyway, guys, thanks for watching.
Bye.
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