Should main shaft slide down under own weight ? - HeliFreak
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Old 02-02-2013, 10:26 PM   #1 (permalink)
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Question Should main shaft slide down under own weight ?

Building frames right now and after tightening up the frame the main shaft goes in but does not fall under its own weight. While building both my Protos I could get the shafts smooth as silk but not so much for my Logo 500. Any thoughts that this will even matter?
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Old 02-02-2013, 10:31 PM   #2 (permalink)
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Mine didn't, just push it in. Obviously, there's a limit to how much pushing you should be doing, don't damage the bearings.
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Old 02-02-2013, 10:31 PM   #3 (permalink)
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Fall, no. Slide easily, yes.
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Old 02-02-2013, 11:39 PM   #4 (permalink)
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Loosen the bolts near the bearings. Mine did the same thing. Loosen them up, slide it in then tighten them up with the main shaft in. That will align them.
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Old 02-02-2013, 11:55 PM   #5 (permalink)
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+1...

Use the main shaft to align the frame upper bearings...as you gradually cinch the bearing bolts down....

And then it'll slide of it's own weight...with a tad of TriFlow...lol
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Old 02-03-2013, 01:13 AM   #6 (permalink)
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Mine almost always slide a little but not all the way through.

As mentioned, just make sure you have the main shaft in the bearings when you tighten down the frame bolts there.
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Old 02-03-2013, 01:23 AM   #7 (permalink)
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Well said...
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Old 02-03-2013, 12:27 PM   #8 (permalink)
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Over 20 builds under my belt. I should have known better! I even use that technique on my Trex 250. Live and learn.
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