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MSR hovers with tilt to left & shaft gap

Old 11-30-2013, 03:07 PM
  #1  
dontrinko
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Default MSR hovers with tilt to left & shaft gap

My used MSR hovers with a slight tilt to the left. One main blade was a little tight. and i found a slight gap in the main shaft. (moves up/down a 32nd or 64th of an inch.
I loosened the blade but the collar on the carbon fiber main shaft does not want to move. I am guessing that there is a dnt in the shaft from the screw.
Any idea why it hovers with a tilt? Thanks; Don
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Old 11-30-2013, 04:19 PM
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Scirocco14
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All helis will hover with a tilt due to the tail rotor thrust. To compensate for the translational force of the tail rotor, there has to be a compensating aileron input to balance out the forces. Normally this is a right aileron trim.

When you say it tilts to the left, what do you mean? Normally helis with CW rotor rotation tilt slightly to the right (i.e. the main shaft is tilted to the right as viewed from behind).

Mark
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Old 11-30-2013, 05:07 PM
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xmech2k
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Yep. Normal like Mark said. Same with the end play. It could bind if you get things too tight.

As far as the heli leaning in hover, I once read a common response from a heli pilot when asked by another how he's doing is 'left skid low'. I guess meaning all is normal. (Guess they were flying heels with rotos that turn opposite to our little MSR's.) The physics and mechanics behind helicopter flight is amazing. I'd highly recommend finding a book or website that describes it without getting too technical.
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Old 11-30-2013, 05:22 PM
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dontrinko
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Default tilt now crash

Well i crashed so i need to do repair and start over.(broken skid, had to drill out hole)
Super gluing spare skid tab. Did not know it was broke.
Time for some football on tv.
Will try again in a few days. Thanks, Don
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Old 12-01-2013, 06:27 PM
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dontrinko
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Back in the air and more trimming. Still tilts in hove. Can not turn tail rotor. Theshaft is very stiff and there is a flat on the end to prevent turning. Don
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Old 12-01-2013, 06:52 PM
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What do you mean by can not turn tail rotor? If it didn't turn, you wouldn't be able to fly.
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Old 12-01-2013, 06:55 PM
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dontrinko
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I mean i can not point the motor slightly down to level the hover. Don
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Old 12-01-2013, 08:17 PM
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JetPlaneFlyer
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There is nothing you can do to prevent the tilt, all single rotor helis do it, it's perfectly normal and unavoidable.

The reason:
The tail rotor pushes sideways to compensate for torque. This sideways 'push' would make the heli skid sideways, so to prevent this 'skid' the main rotor has to 'tilt' in the opposite direction.
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