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Old Mar 20, 2007, 05:03 AM
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New Zealand, Waikato, Hamilton
Joined Aug 2005
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well i was going through my drawers

an found my magnetic prop balance and thought....is it really necessary to balance props or a good marketing gimmick for prop balancers, by that i mean if i look at a glow motor, its full of reciprocating parts which I guess have never been balanced? so what difference is a nylon prop going to make?
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Old Mar 20, 2007, 06:39 AM
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M Ashmore's Avatar
Bakersfield, California
Joined Aug 2003
1,726 Posts
A slight imbalance near the center of rotation (as in engine parts) will not cause a great deal of vibration. BUT, take that same amount of imbalance and move it out 5" from the center of rotation (as with a 10" prop) and the vibration will be significant.

Mike
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Old Mar 20, 2007, 08:41 AM
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Staffs, UK
Joined Nov 2003
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You mean as the engine is already partly unbalanced you think it's a good idea to add an out of balance prop to make it even further out of balance ? Can't quite see the logic myself .

Steve
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Old Mar 20, 2007, 11:48 AM
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Philadelphia, PA
Joined Apr 2005
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The problem with balancing a prop is that it's done before installing it onto the engine which is good, however, how many people have you seen nick a prop on landing (me included) and not remove the prop and rebalance it. We're so worried about sanding a few specs of plastic off a new blade but we pay no attention to a major gouge once it's bolted to an airplane!
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Old Mar 20, 2007, 10:44 PM
I meant to do that
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Eagle Mountain, Utah
Joined Jul 2004
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Thats why you make sure you nick both blades.
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Old Mar 20, 2007, 11:36 PM
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United States, CO, Littleton
Joined Nov 2006
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Quote:
Originally Posted by littlewing78
Thats why you make sure you nick both blades.
^^^ AMEN! ^^^
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Old Mar 21, 2007, 10:48 PM
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USA, AZ, Phoenix
Joined May 2003
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After my landings I WISH I had a nick or two: instead I have two pieces of the prop, far, far apart!
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