5.5 Torque tube too long

[flyul1]

I had about 6 flights on my 5.5. I had a shut down and hard low level auto. I had to replace the tail boom. After about 10 more flights with no issues. Just after lift off the heli suddenly had an uncommanded right tail rotor input. It pirouetted very fast. It did this a second time before I could hit hold. The second time it stopped I hit hold and landed with out incident. I could find no radio problems. I spun the machine up with the main and tail blades removed there was a bad vibration from the tail boom. After disassembly I found the torque tube had small deflections between the bearings and the couplings and the bearings. I built a new toque tube but it is about 1.5mm to long to install the tail gear box. That is 2.5 mm longer than the old torque tube. Has anyone else had this issue?

Thanks

[willwaw]

I am experiencing the same issue but with my agile 7.2.
It´s a brand new kit so I dont know if the torque tube is 2 mm too long or if the tail boom is 2 mm too short.
I have another 7.2 also and I never had any issue with it.

[Bubba Gump]

Take a file and some off the two metal ball joints on the tail case and the front gear section then it should work just fine.