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T-REX 500 › I am done with the tail rotor
05-29-2012 02:36 AM  6 years agoPost 1
rudyy

rrElite Veteran

E. Amherst, NY

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It looks like I am the only one having this problem. The tail feathering spindle snapped the 4th time! You can see in the picture part of the screw is still in the tail rotor. This just drives me nuts.

I have lost 3 sets of tail blade grips, tail blades and tail shaft. I am done with the Align tail rotor.

I am now very good at piro auto though.

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05-29-2012 02:56 AM  6 years agoPost 2
Raydee

rrKey Veteran

Western New York

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WOW Rudy that is weird, did you tap the ground at all? How many flights have you had before that happened? I dont have a ton on flights on my 500EFL but I have had no problems so far.

The Future of Nitro is ELECTRIC

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05-29-2012 02:58 AM  6 years agoPost 3
rudyy

rrElite Veteran

E. Amherst, NY

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No tail tapping to the ground. It just happens after maybe every half a dozen of flights.

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05-29-2012 04:57 AM  6 years agoPost 4
drdot

rrElite Veteran

So. California, Orange County.

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Fwiw..

Just a thought..
I've seen t/rfailures like this caused by h/f vibes in the tail...Carbon blades seem to wxacerbate this issue...Mebbe try plastic blades for a bit?

John.

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05-29-2012 05:35 AM  6 years agoPost 5
Casey S.

rrNovice

Eagle River, Alaska

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I had this problem awhile back with my Align 500. Found I was over tightening my blades in the grips. Started running them loose, so that just a little bump will make them fall with the blades horizontal and zero pitch. That will allow the blades to sling out and not put adverse torque on the bolt just below the head.
Also use new bolts on the grips to hub(the ones that are breaking off). Use thread loc and just snug the bolt up and let the thread loc cure. Make sure the grip moves free and has no side play, if there is play, will need to shim under the thrust bearing.
After I did all that it has never happened again, Hundreds of flights. Wish Align or someone like KDE would make a hud with larger bolts.
Hope this helps. Casey

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05-29-2012 12:32 PM  6 years agoPost 6
tomd27858

rrApprentice

greenville, nc usa

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Great advice Casey. I too hope this helps since I have two EFL's that I am flying. I haven't had this issue with mine and I am pretty sure I don't want to start piro auto training...lol!

Team HeliDirect

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05-29-2012 01:40 PM  6 years agoPost 7
rudyy

rrElite Veteran

E. Amherst, NY

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Thanks for the advice, Casey. I think my tail blade grips are over tightened. I will loosen it up going forward.

I am going to give MicroHeli tail rotor a shot since I lost the blade grip anyway.

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05-29-2012 04:56 PM  6 years agoPost 8
fastflyer20

rrKey Veteran

N. Tonawanda, NY

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Rudyy likes to tighten his tail blades as tight as his main blades

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