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Old 12-08-2019, 03:39 PM   #1 (permalink)
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Default Main gear verticle play,

Hey everyone,

I have a few flights on my new Logo 700 and noticed I was getting extreme vibration warnings on my Vcontrol Touch. I also noticed that my main gear is moving vertically quite a bit on the main shaft (seems more than 1mm as manual states). I do have the two shims installed, the 14x20x0.3 above the tail drive gear and the 14x20x1 in between the main gear and tail drive gear. Have any of you had to add shims to help this and if so what size did you use and where did you place them? In between bottom bearing and main gear or in between main gear and tail drive gear? Thanks for the help!
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Old 12-09-2019, 08:52 AM   #2 (permalink)
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If everything is seated there’s no way to have any play. The washers aren’t “shims”, so much as they’re spacers to make everything align. Either the auto pin is not fully seated in its slot, or the shaft collar between the upper bearing and swash hasn’t been tightened with vertical pressure applied on the main shaft.
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Old 12-09-2019, 07:40 PM   #3 (permalink)
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I rebuilt it and seems to be better now! I have around the 1mm of movement like the manual suggest. I am sure there needs to be some movement or the mod 1 gears would bind horribly and fail.
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Old 12-09-2019, 08:15 PM   #4 (permalink)
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You leave the pinion loose on the shaft, mesh the gear, then tighten the pinion to the motor shaft. I have zero backlash at the high spot on the gear and zero vertical movement on the main shaft.

I’m sure you’ll be fine. But, you don’t need to leave any intentionally.
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