Rotor speed where resonance occurs: _______RPM
 

Original high spot (O vector) = ____________mils Ð _________°
 

heavy spot angle = _________°
 

Draw, to scale, the O vector on the above plot (using compass and ruler). Also draw and label a line to represent the heavy spot direction.
 

Make sure to label direction of rotation
 

Calibration weight, W_cal =  ____________grams Ð _________°
 

Label the location of the calibration weight on the above plot as a box with W_cal in it
 

O+C =  ____________mils Ð _________°
 

Draw the O+C vector on the above plot using a dashed line
 

Draw the C vector between O and O+C using a dashed line and then redraw it at the origin using a solid line
 

C =  ____________mils Ð _________°
 

Draw the -O vector
 

-O = ____________mils Ð _________°
 

Correction weight, W_cor =  ____________grams Ð _________°
 

Label the location of the correction weight on the above plot as a box with W_cor in it.
 

Magnitude of displacement with correction weight = __________ mils
 

Percent decrease from original magnitude (from O vector) = ________%