RV4wb
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RV4wb
Product catalog summary
Introduction: This document serves as a quick reference for the weight and balance data of the RV-4 aircraft. It is important to note that this chart is not a substitute for the comprehensive information found in Section 14 of the Builder’s Manual.
Key Cautions:
- The Gross Weight is determined by the builder, who acts as the manufacturer.
- Aerobatic flight should not exceed a weight of 1375 lbs or occur outside the specified CG limits.
Specifications:
- Datum: 60 inches forward of the wing leading edge.
- Design C.G. Range: 15%-30% of wing chord or between 68.7-77.4 inches aft of datum.
- Recommended Gross Weight: 1500 lbs.
- Aerobatic Gross Weight: 1375 lbs.
- Aerobatic CG Limit: 27.5% of chord or 75.9 inches aft of datum.
Arms:
- Fuel: 70.00 inches aft of datum.
- Pilot: 82.50 inches aft of datum.
- Passenger: 107.00 inches aft of datum.
- Optional Forward Baggage: 56.50 inches aft of datum.
- Rear Baggage: 130.00 inches aft of datum.
Procedure for Determining Empty CG:
- Level the aircraft longitudinally and laterally using the longerons in the cabin area as the reference.
- Weigh the airplane with the canopy closed, full oil, and empty fuel tanks.
- Enter the weights and distances from the datum (arm) in the provided chart.
- Calculate the moment by multiplying weight by arm.
- Determine the empty CG by dividing the total moment by the weight.
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