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10-25-2011 | 06:43 AM

#1

RickSlick

Tech Regular

Joined: Jun 2011

Posts: 310

From: Deerfield Beach Florida

540 VS 550

Building a AE B4.1 kit now and looking at different motors.
What is the difference between a 540 and 550 size motor?
Is it a physical dimension or has something to do with internal components?
Thanks,
Rick

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