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HelicopterFuel-Helicopters New or Limited ActivityQuickWorldWide › Tail rotor self dissembled
04-27-2004 07:47 AM  13 years agoPost 1
Lupus23

rrNovice

Quad Cities, USA

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I completed building my learner several weeks ago. Spotty weather has only allowed me to get out once so that the 'skilled' guys in my club could set the heli up for me and test flew it for me. With that out of the way…

…today I decided to do some hovering in the back yard. I started the heli, spooled it up, and down several times (I was adjusting the mixture on the engine). Eventually I was satisfied and ready to take off.

I brought the rotor disk up to speed, tested to make sure everything was going in the right direction, began to lift the heli up off the ground. As soon as it began to climb it started to spin. I gently set the heli down (the flight lasted almost 5 seconds), and shut the engine down.

From that distance I noticed both tail blades were gone. Closer examination revealed that the 'slide mechanism' to pitch the tail blades had 'unscrewed' and disassembled into individual parts. A couple of bearings, a blue aluminum piece, a few washers, and a brass threaded piece (all still on the axle, just unscrewed apart).

I was only able to find one tailblade. But the one I have is nearly whole. It just sheared off at the base where it attaches to the tail rotor axle. It does not look like it impacted anything. The break is clean, and there are no chips on the blade that I can see.

I think the blade broke either just as, or before I left the ground. I did see or hear anything when they broke. But as soon as the heli broke ground it wanted to spin.

My initial assessment of damage before disassembling includes:
* a set of tail blades
* a frame set for the rear assembly (it was cracked where it is bolted to the tail boom, both bolt holes where broken on one side)
* the tail rotor axle is bent
* The whole slide assembly may need to be replaced if is somehow broken, or unable to be reassembled.

So my question is what happened? Was this an assembly problem? Did the slide assembly come apart? Is this something I should have checked? It was factory assembled. Was it improperly assembled at the factory? How can I keep this from happening again?

Thanks, I really appreciate the help!
James

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04-27-2004 03:44 PM  13 years agoPost 2
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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I checked the brass piece on the tail slider on mine before I flew it for the first time. I unscrewed it and put some locktite on it. Haven't had any problems with it. Mine was also factory assembled, but I don't trust anyone with the application of locktite on the metal to metal components. Sounds like that may have been what caused your disassembly. I also took off the blade grips and put locktite on the screws that hold them on the hub, but I did find they already had locktite on them from the factory. You never know until you check!!

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04-28-2004 02:35 AM  13 years agoPost 3
Ts8103

rrVeteran

Baltimore, Maryland

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You forgot the number 1 rule. Locktite everything. Of all the pre assembled cars, trucks, and heli's that I have bought I don't think a single one of them was locktited. Allways do it your self.
Tone

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04-28-2004 02:50 AM  13 years agoPost 4
MWatts9728

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Sylmar California

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I'll be checking mine out now thank you. The second time I took my 30 out it spun out the same way. Its pretty scary to see you big investments spinning like a top. My problem was that I forgot to put loctite on the tail slider set screw and it was gone.
You say that your replaceing the a section of frame and I was curious which frame do you have? I've been thinking of upgradeing to carbon pro soon but I'm worried about it being to fragile in wrecks. But you have the learner fiberglass frame right?

Thank You
mathew

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04-28-2004 08:00 AM  13 years agoPost 5
Lupus23

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Quad Cities, USA

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Correct, I have the G-10 frame, not the carbon fiber frame.

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05-10-2004 07:15 PM  13 years agoPost 6
Lupus23

rrNovice

Quad Cities, USA

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Just a followup,

I called Quick, explained what happend. They didn't accept blame for the slide falling apart, but said it _should_ have been lock tighted.

I then ordered a couple of new parts, (tail frame set, and a 3 set of tail output shafts). I ordered these from the website. About a week later they showed up via UPS. Over $8 shipping (they should have just sent this via regular mail as it would have gotten here in the same time, and wouldn't have costed so dang much!).

Anyways, after reassembling and greasing the open bearings in the pitch slider, the brass piece which the pitch slider goes together on (flange on one end, threads on the other) came apart. The walls of this brass piece are so thin that the threaded end seperated when I threaded the nut onto it.

I just called Quick and they offered to send me another one free of charge.

Thanks guys, I really appriciate it!

Hope it get's here before this weekend as I am really anxious to get this brand new heli off of the ground!

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05-10-2004 09:27 PM  13 years agoPost 7
tindra

rrApprentice

Hofterup, Sweden

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The brassbushing is extremely thin on the Quick. It is very easily damaged if you overtighten it. You can replace it with corresponding part from the Raptor 50. The material is much harder and fits perfectly.

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05-14-2004 03:38 PM  13 years agoPost 8
Lupus23

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Quad Cities, USA

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I got the new part in yesterday, and after reassemblign the tail rotor, the brass bushing is really tight and binds on the tail output shaft.

I've tried lubercating the shaft, and the bushing but the binding is stsill more than is acceptable.

Any suggestions on how I could loosen this up some?

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05-15-2004 07:35 AM  13 years agoPost 9
tindra

rrApprentice

Hofterup, Sweden

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Check your tailrotor shaft if the pitchslider is binding.The shaft can be slightly bent. Dissasemble it and roll the shaft on a mirror or any other flat surface. If it´s ok you have three ways to go:
1. Ask for replacement of bushing.
2. Make tailrotor shaft smaller in diameter. Not recommeneded.
3. Send back bushing and buy a Raptor bushing instead.

Peter

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05-16-2004 09:46 AM  13 years agoPost 10
Lupus23

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Quad Cities, USA

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The shaft is straight. But I did manage to solve the problem. My dad has a 115 piece set of metric drill bits. They are about 4 thousandths between each bit. We use a bit that was a bit tight in the bushing.

This loosened it up enough that it is now perfect.

After putting the tail back on the heli I successfully hovered it myself for the first time. It has been flown before, but we ran out of time before I was able to take the sticks.

I took it out in the back yard and hovered a tank through it with no issues.

Woo hoo!

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05-17-2004 02:57 PM  13 years agoPost 11
Lupus23

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Quad Cities, USA

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Okay, I have serious concern about these clear tail blades I've gotten from Quick. As mentioned at the top of this thread, I thought the pitch slider came apart breaking the blades, and causeing the damage.

But....

This Sunday I got out to the field for some more flying, and got 2 flights in.

At the end of the second flight, hovering about 6 inches off the ground there was a POP then the heli started a counter clockwise spin, it only spun about 20 degrees before I was able to land it.

Spooling down revealed both tail blades were gone, and the tail output shaft was bent. No other damage is apparent.

I've had the expert heli guys as my field go over the heli, they tested and adjusted things like the tail blades. There was no unusual vibration at all in the heli, it was very smooth flying. The tail seemed to be spinning without vibration or anything unusual.

The conclusion was that the clear tail blades were too rigid, causeing the breaks, and I am now thinking my earlier problem started with the tail blades breaking, THEN the slide came apart.

In any case, has anyone else used these clear tail blades. Have you had problems with them? The guys at the field gave me another set of blades, and I think I will be avoiding the Quick blades in the future.

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05-17-2004 05:12 PM  13 years agoPost 12
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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I didn't get the clear blades with my Quick. I just have those flexible ones that came with the kit. I don't know if blades being too rigid would cause the breaks, aren't the cf tail blades pretty rigid? I think maybe the clear blades may just be substandard.

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05-17-2004 09:46 PM  13 years agoPost 13
Lupus23

rrNovice

Quad Cities, USA

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Here is a picture of the clear blades. This picture was taken much earlier this year, before the heli had ever been flown. Note the cat hair hanging of the tail machinery. LOL

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05-17-2004 10:17 PM  13 years agoPost 14
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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I have not seen any blades like that before. One thing is for sure, if the blade breaks, it will tear up most things attached to it. I've had a bearing come apart in the blade holder, and it made things most interesting. Seeing how you lost both blades on the second failure, I would say that using another type of tail blade would be the way to go. I'm still using the flexible one's that came with mine. They're cheap, and I'm not flying competition or extreme 3d. They work fine.

Phil

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05-18-2004 05:00 AM  13 years agoPost 15
shuttlepilot

rrElite Veteran

Mullins, South Carolina

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It's funny how everyone wants to jump on HHI for their "percieved" problems. I just recently bought some 580 blades from them, when they arrived they were actually 550 in length but were packaged incorrectly. I called Bjorn at HHI, and no questions asked, new blades were shipped to me.(and my credit card was not charged).
All of the metal upgrade parts that are on my Shuttle zx came from HHI, and I have not had a minutes trouble with them in over 5 years(and they have been through a few crashes) I have never had nothing but "no questions asked service" from everyone that I have talked to at HHI, including Irwin. It amazes me how the critics pop out of the woodwork, even though most of them have no experience with Quick at all. I could go through runryder and pick countless post about problems with Century, JR, MA, and lord forbid Thundertiger concerning customer service and quality. So far my Quick has had 8 gallons though it without one minutes trouble with any of the mechanics, it flies like it's on rails.
You forgot the # 1 rule in this game... STAY AWAY FROM QUICK!!!!!!
I think the number one rule is listen, learn, and if you have FIRST HAND experience then speak.

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05-18-2004 09:54 AM  13 years agoPost 16
Lupus23

rrNovice

Quad Cities, USA

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I was just going to ignore him. Fact is, I already got the heli, and am not planning on buying a new one soon, so his opinion doesn't help.

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