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George,
the rotor is not sliding "back and forth" , it only makes a clean circular motion around its own center. The weight only is significant for the centrifugal force on the e-shaft lobe.
This is why the rotary can be perfectly balanced.
Just trying to keep the rotary straight.
Richard Sohn
N2071U
----- Original Message ----- From: "Ernest Christley" <echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, February 09, 2008 7:49 AM
Subject: [FlyRotary] Re: Rotor Weight Codes
George Lendich wrote:
Ernest,
I weighted the RX8 rotor, 4222Gram or 149 oz or 9.3 lbs.
Is my conversion right?
That works according to onlineconversion.com
That's only .24 lb of a difference between the 89-95 rotors to the RX8.
Considering the accelerations involved in slinging that rotor back and forth at 2000RPM (speed of the rotor), 1/4lb is significant.
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