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Old 08-19-2011, 12:03 AM
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TLS TLS is offline
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Join Date: Jan 2000
Location: N&W Philadelphia Suburbs
Posts: 7,938
In addition to weight, a thicker blade pushes more air/grass as it rotates.

Think this way.....

Most string trimmers come with .095" line.

Now try .080" - More RPM's and more power.

Now try .105" - Less RPM's and less power.

Pretty similar in weight, it's the aerodynamics causing most of the drag.
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