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HelicopterThunder TigerRAPTOR 50 › X50 tail case problem .... FIXED.. put open TT metal tail case!!
08-01-2011 03:28 PM  6 years agoPost 1
steveiewonder

rrNovice

L.I. NY

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one flight,right side stock TT tail case cracks(second time in first 5 flights of brake in ) starting at front corner of idler pulley and follows down the radius were tail boom seats.
I did the tail linkage mod with 600 bell crank off the boom clamp carbon fiber quick UK links to the tail no binding end points set correctly.

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08-01-2011 10:32 PM  6 years agoPost 2
WessCo

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Summerville, GA USA

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Is/was that bolt tightened too much?

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08-01-2011 10:40 PM  6 years agoPost 3
Heli 770

rrProfessor

USA.

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Someone else had the same problem, broke three or four at the same place. I don't remember what the cause was and couldn't find the Topic. Maybe he will chime in.

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08-02-2011 05:50 AM  6 years agoPost 4
steveiewonder

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L.I. NY

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all bolts were torqued to spec not over tightened.

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08-02-2011 05:55 AM  6 years agoPost 5
Heli 770

rrProfessor

USA.

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The one I'm talking about was on a R30 or 50. But, it's the same case and the screws/belt wasn't over tighten.

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08-02-2011 06:04 AM  6 years agoPost 6
steve9534

rrKey Veteran

yakima, wa.

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Mr Wonder

I have broken at least four of those tail gear boxes, too. The key thing for me was that I had changed to some CF T/B support struts and they flexed more than the stockers. Once I got stronger struts, the tail box would hold together long enough for the belt to jump the rear pulley and the T/R blade grip bearings to fail. The whole TT50 tail was originally designed for a 30 size heli and is marginal on the 50. Hope this helps. steve.

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08-02-2011 05:50 PM  6 years agoPost 7
Swoop

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Newark, DE USA

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I'd also check for vibrations. Make sure one of the tail grip bolts hasn't started to back out and throw the tail out of balance. Is that carbon rod vibrating and passing on vibs to the tailcase through the bell crank?

Chris
X50, B320, Radix, Spartan
Titan,Kasama,MP5,Radix,JR770
Trex450SE,MavrikkG5,Phoenix35

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08-02-2011 11:06 PM  6 years agoPost 8
mustang67ford

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Central Pennsylvania

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all bolts were torqued to spec not over tightened.
Not to be smart, but how is this accomplished?

Team HeliProz - Retired
AMA #513507
IRCHA #4011

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08-03-2011 01:36 AM  6 years agoPost 9
Rob Faust

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Spring, Tx

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I had this issue for about two tail cases in a row. The latest tail case number three has held together for about seven months. Never did figure out the cause of the other two failing. I should also note that mine broke in the same place shown in the pictures.

Rob.

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08-05-2011 10:55 PM  6 years agoPost 10
spacecopter

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Calgary, CANADA

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I had the same problem on my Raptor e550, as well. Tail case cracked at the same spot!
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.
.I'm thinking of switching to the Quick metal tail case or the one, that TT is offering???

By using the Qick UK one - are the bearings and the tail shaft interchangeable with TT parts?

Marc
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.
.

No sponsoring - I pay for what I fly

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08-05-2011 11:21 PM  6 years agoPost 11
Heli 770

rrProfessor

USA.

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I think the bearings are the same. It's kinda useless not use the Quick UK shaft and pulley because it get rid of the pulley pin. But the UK shaft and pulley will work on a stock tail case.

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08-06-2011 04:02 AM  6 years agoPost 12
GREYEAGLE

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Flat Land's

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I'd be suspecious

Of how tight your belt is, when then taking the Bird with the aluminum tail boom from the air conditioning out door's when its hot.

The aluminum tube is firm anchored in the fuse to maintain belt tension. As the boom warms up it grows laterally ---- and the only direction it can grow is towards the tail case end where it's bottomed against the internal land inside the case.

Something has to give -- you see it in the photo's - POP

On a couple side notes: aluminum grows approximate 1/4" per foot on a solid billet depending on the Temp.

I have a couple plastic ones that I have on purposely cut the complete bottom's out and thinned them down - just for bearing lube / belt cleaning and weight reduction. Never had one fracture.

Set your belt tension / boom length / and tail supports "out side" at temperature . When you bring it back in and it chill's down - it may be loose.

When your Bud's are in the air conditioned shop and they correct you on your sloppy belt tension ; You can teach it too them.

The reverse applies in the winter -

greyeagle

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08-06-2011 04:49 AM  6 years agoPost 13
spacecopter

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Calgary, CANADA

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Just two weeks ago the aluminium tail boom was even cracked inside of the tail case.

First I was wondering, why my tailrotor was making this klicking noise.

When I opened the case - I realized, that the boom was completely splitted inside. The tailcase was holding the broken tailboom together.

I didn't expect, that something like this can happen.
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.
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No sponsoring - I pay for what I fly

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08-14-2011 03:00 PM  6 years agoPost 14
steveiewonder

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L.I. NY

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Thank you swoop that tt tail is really nice!! OK tt metal tail is on my x50 after 3 plastic tail cases in less then 7 tanks!! flew all day yesterday had zero problems machine fly's great finally finished brake in. tons of power with FBL RJX beast set up.

If thunder tiger just came out with newly designed 50 and people are having these tail problems why didn't they put there own metal tail on this machine in the first place, as part of the kit? Would have saved the customers who believed in tt a lot of time and trouble!!

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08-14-2011 03:13 PM  6 years agoPost 15
WessCo

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Summerville, GA USA

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I've had no problems with the tail case on my X50.

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08-14-2011 03:40 PM  6 years agoPost 16
steve9534

rrKey Veteran

yakima, wa.

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Tail case

The latest ads on this heli show a metal tail case and a torque tube tail. I had to run my tail belt as tight as I could get it to try and prevent the belt from slipping. For those who don't stress the tail as much and run the belt looser, you may never have problems. I had an interesting conversation with Todd Bennett at the Snohomish FF. He said his job was to stress test the TT helis and make sure that they would hold together. I guess they figure if he can't break them, no one else will either. Anyway, I didn't ask him about the X50 specifically, but it's interesting that they now are coming out with the metal tail case and TT drive system. It's doubtful that they would have taken the time and money to do so if the original were satisfactory. steve.

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08-14-2011 06:38 PM  6 years agoPost 17
payne1967

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uk

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the torque tube was coming out anyway
so is the electric and flybar less model
tt have used the same plastic tail case for years without problems

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08-14-2011 06:43 PM  6 years agoPost 18
Heli 770

rrProfessor

USA.

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I think the molded frames are more forgiving to vibration than the C/F frames.

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08-15-2011 01:32 AM  6 years agoPost 19
steve9534

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yakima, wa.

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Payne

Modify your motor for more power, put on some 95mm CF tail blades, use a fast brushless digital tail servo, and Spartan gyro to match. Now go out and do about 1000 sideways loops or figure 8's interspersed with rolling, spinning tail slides, 500 or so four point hammerheads, and an occasional death spiral, then come back and report your results. Many will not have a problem, but I got tired of replacing belts and pulleys with the teeth rounded off, and destroying the bearings in the T/R blade holders. I finally sold the carcass after throwing the T/R blades in a death spiral and smashing the thing into oblivion. I liked the way it flew and flew it a lot. Maybe the folks at TT didn't have anything else to do one week and designed a new torque tube T/R drive, maybe not. Most will likely be perfectly happy with the belt drive and it looks as if that will still be available for less money to those who prefer. At least there will now be an option for those who don't. steve.

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08-15-2011 06:40 PM  6 years agoPost 20
payne1967

rrElite Veteran

uk

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steve i can't do that to the belt drive as i've put the torque tube conversion on mine due to getting tired of constant belt tension problems
the x50's belt is the worst i've ever used
as i'm used to the hirobo belts that are fit and forget i didn't like the messing around instead of flying

the one thing i didn't consider in my post was that although the plastic tail box has been used in the raptor for years it is now made in china not taiwan so there may be a quality issue

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HelicopterThunder TigerRAPTOR 50 › X50 tail case problem .... FIXED.. put open TT metal tail case!!
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