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T-REX 500 › TRex 500 tail rotor failed after 6 min flight!?
06-06-2009 01:58 AM  9 years agoPost 1
sumonzu

rrApprentice

San José - Costa Rica

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Hi there: I'm a quite experienced builder/pilot.
I had a serious problem with my first and brand new TRex 500 ESP. Just after only about 6 min of flight (first test/tuning flight) the torque tube front drive gear (part H50096) suddenly stripped and fortunately I saved my bird since is was very low.
Does anyone has had the same problem? What can be the reason of this failure?
Many thanks in advance for any contribute/opinion!

Blade CX3
TRex 450 SE
TRex 500 ESP
Xcell Fury Tempest FAI 90
Xcell Stratus 3D 90

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06-06-2009 02:09 AM  9 years agoPost 2
duceduc

rrKey Veteran

Saitama-Ken, Japan

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Possibly bad parts. I haven't heard anything like that.

Duc S
Do It! Do It!™
AMA:REVOMIX
RCK:24005615-01

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06-06-2009 04:30 PM  9 years agoPost 3
dalong2362

rrNovice

BC - Canada

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It happend once on my bird but looks like it is happing... I've talk to guy from LHS and suggested to check TT bearing install that make sure it is not way off from center line (still need to be offset IAW manual)and use auto rotation when you landing...
Tail blade strike is biggest one that causes for the TT gear stripped.

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06-08-2009 02:49 PM  9 years agoPost 4
Micro-Maniac

rrElite Veteran

Pasco,Washington Formerly: Captain Chaos

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Here's my post in another thread about the poor gear mesh I discovered on my 500 ESP build

http://www.runryder.com/p4283148/

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06-08-2009 07:33 PM  9 years agoPost 5
sumonzu

rrApprentice

San José - Costa Rica

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Thank you all for your comments! I realized that it was a poor gear quality (bad part). I replaced those parts and they seem to be far better and smooth compared with the previous stripped ones!

Not yet tested on the field yet, but I'm confident they will work fine; gear mesh is ok.

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