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HelicopterAlignT-REX 600N › T-REX 600N g10 version
07-14-2008 03:35 AM  9 years agoPost 1
R/CBOONE72

rrApprentice

Winfield, ks - USA

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I have the cheapo T-rex 600n. Any one had any problems with links or parts flying off the head or blades even? Who has put the align metal grips on theres?

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07-14-2008 04:50 AM  9 years agoPost 2
Helijockey

rrKey Veteran

150 miles from somewhere

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I have the nitro sport with metal grips and 170 plus flights, nothings flown off it as yet!! It's a great heli and I'm sure u'll enjoy flying it

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07-14-2008 05:04 AM  9 years agoPost 3
JAGNZ

rrProfessor

Auckland, New Zealand

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I have beat on my 2 for almost a year without issue except the one-ways (sorted now). I run metal grips on both.


Jason Greenwood

www.3dheli.co.nz

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07-14-2008 05:13 AM  9 years agoPost 4
swasey1982

rrApprentice

La Ceiba, Honduras

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same here, not parts flung yet, just metal grips and bits.

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07-14-2008 01:59 PM  9 years agoPost 5
BJames111

rrElite Veteran

San Diego, California

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metal grips, added a TT, everything else stock and flies great.

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07-14-2008 09:52 PM  9 years agoPost 6
R/CBOONE72

rrApprentice

Winfield, ks - USA

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well thats just odd, I don't understand, I have heard or no one else with this problem. but me

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07-14-2008 10:02 PM  9 years agoPost 7
JAGNZ

rrProfessor

Auckland, New Zealand

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What problem? Parts flying off the head? Sounds like a build issue to me.


Jason Greenwood

www.3dheli.co.nz

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07-15-2008 02:08 AM  9 years agoPost 8
R/CBOONE72

rrApprentice

Winfield, ks - USA

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it happened twice, the bolt came out of the spendle, destroyed the heli completly the first time and saved gyro, pipe, gov, but both crashed the head partys mostly survived. But the thing is that I flew many, many flights on the plastic head grips, at 2000rpm. Then I switchd to metal grips cause someone said they were doing 2100 and metal grips would be best on it at those speeds. Just a few weeks after that upgrade I was flying at an airshow and thrashn around to the best of mmyyy ability and it blew up, blades in tack on blade grips, spendle not broke and screws still in the grips as well. I thought it was cause they came loose. They looked a little messed up but I thought it was from crash. So I rebuilt, all the same setup, made sure the bolts were tight with blue locktit. I took the blades of the heli after the first flight of second bird, the grip bolts were tight, then 3 minuts in on the second flight, I went into a chaos and before on complete revo. was made it blew up again, but I have a gov. and it govd. the engine cause it was on and the flybar kept is kind level so it did not nose in and it did not do as much damage that time. I called align each time to talk and they had no idea, just that it was the build, but the second one I know was tight, and no sign in flight of any shaking, sympton I would think that would happen, but nothing, then boom. The bolt this time was stripd of its color and the threads folded over at 1900 head speed cause I was breaking in the motor. I am flying my third one but I am not doing much with it, love the way it flys but I do not want it to happen again. I wish I could get a definate answer. I have posted bout this many times, nothing but my fault so I really forgot about it cause I don't see how its possible, I thought it was how I was flying, messed up my choas but I c em thrown more then that all the time. I don't know.

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07-15-2008 02:13 AM  9 years agoPost 9
JAGNZ

rrProfessor

Auckland, New Zealand

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Could have been a bad spindle I suppose or a weak spindle bolt but it just sounds odd. We have probably hundreds of 600N's in NZ and I have seen MANY MANY of them flown very hard with none of the issues you describe. I hate to blame the builder when it sounds like they did it right but always hard to say. I only use Blue Locktite, never Red but if I had the problems you had you can bet Red would be on those spindle bolts.

Good luck tracking down the problem.


Jason Greenwood

www.3dheli.co.nz

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07-15-2008 02:20 AM  9 years agoPost 10
FlaG8r

rrElite Veteran

Florida

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One note, might be obvious but in my short experience I've noticed that after a large amount of flights if I recheck those bolts going into the spindle they might be loose. This was after they were loctited down hard and clean and free of any grease. I think they naturally will loosen up over time because of the grease and oil that seaps into there. Good to check every once in a while. Same thing can happen to any screw/ grub that has been loctited properly.

Life is tough, it's tougher if you're stupid

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07-15-2008 02:25 AM  9 years agoPost 11
R/CBOONE72

rrApprentice

Winfield, ks - USA

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2 bad spendles/bolts in a row. Like I said I did check it before going on the second break in flight of the second heli. My 3rd one I check at least before the day starts then every 5 tanks or so if I have been flying it hard, I do not run my head spead on anything anymore over 1910, which thats my rappy 50, my trex it 1870 and so is my fury. My litle 450s are higher though. But IDK as well. I hope I find the problem as well.

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07-15-2008 03:43 AM  9 years agoPost 12
mlucia

rrKey Veteran

Essex Jct., Vermont

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What dampeners are you using? Are they old and worn? Does it boom strike when it 'blows up'?
Were you doing a chaos when it blew up? Did you add the shim washers back in when you changed to the metal grips?
Just some thoughts..

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07-15-2008 03:49 AM  9 years agoPost 13
R/CBOONE72

rrApprentice

Winfield, ks - USA

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umm, the dampers are hard, no boom strike, umm, yea that gold washer is there. And yes it was a kinda choas.

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07-15-2008 04:50 AM  9 years agoPost 14
jal250r

rrVeteran

Mankato, MN, US

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Make sure you clean those bolts with good cleaner before installing with locktie. You know this Im sure.

"Feed the Need to 3D"

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07-15-2008 04:56 AM  9 years agoPost 15
swasey1982

rrApprentice

La Ceiba, Honduras

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Thats really odd, hmmm have you any pics of the damaged spindle, could the threads in the spindle be defective or maybe the screws are too soft? this might sound dumb but maybe to much torque when tightening the bolts?

!! hope you solve this issue soon !!

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07-15-2008 05:16 AM  9 years agoPost 16
JAGNZ

rrProfessor

Auckland, New Zealand

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That's a very good point, overtightening will stretch the bolts and weaken both bolt and Spindle threads...I didn't even think to mention that....they only need to be snugged.


Jason Greenwood

www.3dheli.co.nz

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07-15-2008 05:45 PM  9 years agoPost 17
R/CBOONE72

rrApprentice

Winfield, ks - USA

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umm, well that may well be the case there, over tightening but, I have it bout the same on everything though, after the first crash i read where the metal grips put lots more stress on things then the plastic did and that lead me to believe it was the grips cause I flew many, many times on my plastic ones, and I tightend the bolts just like on everything else I do and then went to metl, the threads felt tight when switching to the metal grips, flew about 12-13 flight when the frst one happened, and i do check the bolts every morrning before I plan to fly somthing, chack motor bolts, some of the frame bolts, and pipe bolts if I can get to them on a particular machine. I am lost but its over and all I can do is assume all of what you guys are saying.

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07-15-2008 07:00 PM  9 years agoPost 18
rookie5

rrVeteran

Harlow, Essex - United Kingdom

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flown my trex 600 sport for about a year and had no problem with the head or parts flying off when i was using plastic head grips but i probably wasnt running 2k headspeed on plastic grips. i now run metal blade grips at 2k headspeed and still no problem with parts flying off.

theres a couple guys at my flying field that also fly trexs with plastic and metal blade grips and ive never seen them have any problem with the heads.

so maybe a build issue ?

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07-15-2008 08:50 PM  9 years agoPost 19
mickeyapples

rrVeteran

England

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I just got rid of my trex sport but I have had about 300 flights on it as standard with no problems apart from the oneway bearing locking up.

Live life on the edge. Stand next to me when I am flying

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07-15-2008 10:03 PM  9 years agoPost 20
shawgl

rrKey Veteran

Murrieta, CA

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I watched Brandon Updikes explode about six months ago. It was one of the spindle bolts backed out. Threads were intact on both the spindle and the bolt (It was still in the grip)
Crazy sight. Blam! Heli... scattered all over the place. Pretty cool though too.

In God we trust, everyone else we monitor.

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