Thread: Discussion E-flite Blade SR 120 Thread.
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Old Aug 06, 2012, 04:03 PM
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United States, WI, Sheboygan
Joined Aug 2011
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Originally Posted by North_of_49 View Post

When it's doing the toilet bowl thing is it always pointing at the same heading... for example, north?
Yeah, my heli always points toward North when it has tbe.

Mike is the one who kept insisting that a cracked main shaft was a major source of tbe. I wasn't convinced until a couple of weeks ago when my heli became unflyable.

I stubbornly tried everything else but finally got around to examining the shaft more closely. Taking the screw driver that came with my heli I VERY gently pushed it into the top of the shaft. Sure enough, I found a hairline crack that appeared to have started at the topmost hole and propagated upward.

I replaced it with a new one and... VOILA! The tbe was worse than ever. Huh?The brand new shaft was cracked! Tried another new shaft - same story!

Finally in desperation I put a tiny drop of ca on the very top of the shaft where it would wick down into the crack. I immediately wiped off any excess glue and let the shaft cure for about 30 minutes before putting the heli back together... VOILA! PROBLEM SOLVED! I've been flying with the repaired shaft ever since with no hint of tbe.

At least one other peep has reported a cracked shaft right out of the package. I think it may happen when the holes are drilled too fast. It's worth checking out!
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Last edited by 1Pilgrim; Aug 06, 2012 at 08:20 PM.
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