Honey Bee King 2 loud noise just before take off?!

[ragged411]

Hello,

I have recently brought myself a Honey bee king 2 carbon fiber edition, had it about 2 weeks been looking at setup etc.. think it is setup ok but am a total beginner so this could be part of the problem. Anyway tonight tried to start the motor for the first time checked blade tracking whilst on the floor could only see the one blade so think that is ok, increased the throttle so it was just about to lift off and it started making a vibrating knocking noise like something was rubbing but only at high speed.

Any ideas would be helpful.

Thanks in advance

Tony

[robbancs]

Honey Bee King 2 loud noise just before take off?!

At lift off head speed you may have a pitch that you don't have at the low head speed stick position. Disconnect the motor, move the stick where it's about to lift off, and spin the blades by hand and look for binding and knocking.
Another approach would be to remove the head and spin up. If it's problem free, put the swash plate back and try again. If still alright, put the head back but no blades and try. If it's happening without blades, you may have a closer look (and listen) to find where exactly the noise is comong from. But be very careful not to get caught by the flybar or the tail rotor!!!
Let us know how it goes.

[ragged411]

Will try it tonight and upload a video if it is still doing it thanks alot

[paulsouthport]

When you spin up without blades you'll also want to remove the tail blades or it'll pirouette. Can you get a video of the problem, it's hard to diagnose.

[ragged411]

Will do, soon as my little boys off to bed I'm on it! Thanks for all the help glad there's forums like this out there!

[barryorbik]

Tony we could do with a few more details of your purchase as you did'nt say in you post if your King 2 was brand new or a secondhand purchase or if you have the original radio or a computer version (Spektrum DX6i, DX7, DX8 etc. ). I am guessing the helicopter is second hand as the King 2 was superceeded some time ago. Used models may well have been upgraded and have undoubtably sustained some crash damage and been rebuilt (often incorrectly) in the past, so a careful strip down and check of the head assembly is a good move. If it still has the plastic original head a favourite piece to break is the flybar centre holder (item15 in the manual part number 0284) where one of the support pivots that locate in the head block break off but is difficult to diagnose unless you strip the head down but can cause the problem you have, as will unbalanced blades. Check the various bearings in the blade grips and the main shaft whilst you have it apart to make sure they are still smooth and rotate freely as these are also weak items but the King 2 (and 3) can be a handful even when tamed right down with a computer radio and are not idea beginners helicopter as parts are starting to become obsolete too now. Check out the stickies on the HELIGUY site as there were lots of ESKY owners on there and some useful hint and tips on setting up and upgrading etc.

Barry

[cjcj1949]

If you are a total beginner you'll find it useful to get someone local to look at it. Helis of that size are easy to crash and each crash takes time and money to repair. Unless you really want to do things the hard way, and lots of people do, you'll find it much easier to get a smaller heli like an msr, msr-x, or mcpx first and a sim like phoenix. Small helis usually survive crashes. Yours usually won't. At least get someone to test fly it for you.

[ragged411]

OK, its second hand, has the carbon fiber parts and blades ect.. I have original transmitter 0409a, it has brushless , head lock gyro, new ESC. I'll get pictures and video uploaded later, think I mite try to find someone locally to have a look at and give it a test flight for me worried about takeing it all apart and doing more damage than good, found a few good guides to do this but does seem hard to level everything correctly.

[ragged411]

I no I jumped in at the deep end but have spent at least 20 hours on flight sim now read lots of things all week the rcfun school pages OK included and last night thought I should plug motor join and spin it up to find that noise! Not long tho now am I'll have some pics and videos .
Thanks for everyone's help so far

[cjcj1949]

It is difficult to begin with. Have you seen the model flying or do you know the person who sold it to you. Was it from a shop or ebay? Second hand helis can be a problem if someone has sold it because they couldn't fix it. Disconnecting the motor would be a good first step. Make sure that the swash is level and that it moves as it should when you use the tx. You can also do a range test. The mesh between the motor gear and the main gear is critical. It needs to have a small gap. You should be able to get a piece of paper through. Too tight and you'll lose lots of power and too loose you'll destroy the gear wheel.

[unwind-protect]

Check the sticker on the motor (by which I mean remove it!)... this came half off on my old King and scared the life out of me!

[ragged411]

Hello,

no didnt know the person or see it fly as it was 10pm in a london flat the size of a shoe box. The bloke said he was selling as he moved to london and hadnt touched it since he went to uni. i did try to check everything was level and have been reading about how to do it all but just not attempted it yet as it all looked pretty good to me (untrained eye!). the linkages all moved at the same time for each of the directions and like i said i had ago at adjusting the pitch but twisting the ball joint link in single full turns at a time didnt seem to change anything so i put it back the way it was and then went in search of help on here.

Videos! so i have taken the blades off as suggested an good news i think?! the noise had gone away ill add the videos please take a look. the heli kept spinning as i filmed that it didnt do when the blades were on but please any comments suggestions would be amazing! i also filmed the central wheel as that seems to wobble slightly that didnt look to good but here they are.

P1000633.JPGP1000634.JPGP1000635.JPGP1000636.jpgP1000637.jpgP1000638.jpg

[robbancs]

Noise gone with blades off is not good news I'm afraid. It means a problem that only shows up under load. So it's more difficult to track down.
The wobbly gear is not ideal, it'll generate vibration for the gyro. But it should still be flyable.
I'm hesitating to ask you to make a video with the blades on. You said the noise would come before taking off so it should show itself. But please be very careful if you decide to give it a go!!! These blades can cause very serious injury! If there's a way, I'd suggest you should rather find someone and let them see it.

[ragged411]

put the blades back on all was fine no noise even got the skids off the floor! by at least 3cm!! scary but i was happy! lol. Then after a few spin ups the noise came back, the heli was trying to move around everywhere on the floor as it got up to speed so im guessing my pitch and other setup is out by alot? Got the noise on video have a look below.
Thanks everyone helping.

[cjcj1949]

You seem to have a wire very close to the main gear wheel. With vibration, at a certain speed it could hit the gear wheel unless it is secured. You can't tell that much when the heli is on the ground. You need to know about gyro rate mode and gyro hold mode and how to set them up. It won't be causing the noise though. You would be better off doing it outside and securing the heli to the ground as you spool up.