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Home✈️Aircraft🚁Helicoptere-BladeOther › something bent?
07-18-2006 11:50 PM  14 years ago
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Rototard

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Parker, CO

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something bent?
Hey Guys,

Very much a noob here. I've been "flying" my BCP for less than a week. I have made it to a hover, but only for about 20 seconds at a time. The issue is that I had a blade strike. Wasn't bad, but was wobbling, so I replaced the main shaft and the coupling, but I'm still getting a vibration. Reading here that a lot of main shafts start out bad brand new, I replaced it again this morning, but I still have a wobble. It is most noticeable at low to midrange RPM.

Is there another part that could be bad?

Thanks,

Keith
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07-19-2006 01:51 AM  14 years ago
gmcullan

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Southbridge, MA

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If you've had a blade strike I'd also check your feathering shaft. This is the spindle that runs through the rotor head between the blade grips. It's fairly easy to bend this part. An additional item to check is the flybar. If your main shaft, feathering spindle, and flybar are straight and you are still getting wobble/vibration, then you need to check first your main blade balance and then your main blade tracking.Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450
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07-19-2006 03:12 AM  14 years ago
stickyfox

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Rochester, NY - US

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This is the spindle..
And that's what E-Flite actually calls it if you're using your parts diagram for reference.
-fox
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07-19-2006 03:21 AM  14 years ago
futuramille

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SC USA

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Its quite easy to straighten a spendle shaft. I have yet to buy a new one and bend mine often.

------------------------------
.....I need more batteries!!!
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07-19-2006 03:24 AM  14 years ago
rky5

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Oak Hills california

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yep
Feathering shaft would be my guess as well
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07-19-2006 04:50 AM  14 years ago
Rototard

rrNovice

Parker, CO

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I gave adjusting the blade tracking a shot and it seems to have helped the wobble. The only issue is that now it takes almost full left roll trim (on the TX) as well as about half nose up trim. Is this an issue, or should I leave it set that way on the TX?

Thanks again.
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