Weird noise. (video)

Link_NL · 08-19-2011, 05:41 AM

This is my 3rd flight of my HK450pro. Which is my 1st heli I build myself.
Blade tracking issues are solved now. Now i need to focus on the tail. Which doesnt hold very well. I noticed a small drift in both directions. Is that because the gyro gain is too low?

And I noticed right after spool up, a high pitch noise. Can this be a bad bearing? The noice went away for a moment. But comes back every so often. The noice wasnt there at 3000 rpm. But now i inserted a 11T pinion. My headspeed dropped to about 2900 RPM. And I noticed it..

Maybe you experts can point me into the right direction?

Appriciated..

YouTube

Stumblebee · 08-19-2011, 07:11 PM

I won't venture a guess on that squeal but I will say this. You are one very brave person to be flying a freshly built 450 around all of that plate glass in all of those very close residences. Good luck to you.

Link_NL · 08-19-2011, 08:07 PM

Point taken..

As you noticed, it was a short flight. It was my birthday that day. It was just a flight to show my 2 friends my machine.

I took it out 2 times earlyer. And had a couple of flights with it. So I had some trust about it.. But I really get your point.. On that very moment I thought about that.. "what if" surged through my mind... So I wasnt planning to do a long flight.

08-19-2011, 07:11 PM	#2
Stumblebee Registered Users Join Date: Jan 2010 Location: Port Coquitlam, CANADA	I won't venture a guess on that squeal but I will say this. You are one very brave person to be flying a freshly built 450 around all of that plate glass in all of those very close residences. Good luck to you. __________________ MQX Quad,Align 550E/NazaH/GPS,Align450 Pro/CPII, Flame Wheel F450 Quad NazaM/GPS/GoPro2 Never lend money. It causes amnesia.

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08-19-2011, 08:07 PM	#3
Link_NL Registered Users Thread Starter My HF Map location Join Date: Nov 2010 Location: Netherlands, Haarlem	Point taken.. As you noticed, it was a short flight. It was my birthday that day. It was just a flight to show my 2 friends my machine. I took it out 2 times earlyer. And had a couple of flights with it. So I had some trust about it.. But I really get your point.. On that very moment I thought about that.. "what if" surged through my mind... So I wasnt planning to do a long flight.