Boundary Waters
Pre-takeoff checklist
- Joined
- Sep 24, 2021
- Messages
- 153
- Display Name
Display name:
Luscombe Driver
An acquaintance kindly shared these numbers of his near duplicate of his grandfather's PA-11. A C-90-12F powered E-AB that he built using Wag Aero Sport Trainer plans.
_____"So, what goes into a pot of pseudo Piper soup?"
Frame (welded and sealed 4130 tubes, control torque tube, blocks, tabs, brackets) 91.5 lb
Floor boards 1/4 inch marine plywood 7.5 lb 99 lb
Stits Polyfiber Cover 42 lb 141 lb
Aluminum cowling 10 lb 151 lb
Two wood spar wings without cover 128 lb 279 lb
Two 9 gallon fuel tanks 16 lb (+24) 16 lb 295 lb
Wooden Sensenich Propeller (A-691 Item 101, 11 lb at --51) 11 lb 306 lb
Spinner 1 lb 1 lb 307 lb
Continental C-90-12F (with manifolds and carb, without mags) 171 lb 478 lb
Two mags, eight ignition cables, eight spark plugs 25 lb 503 lb
Spin on oil filter includes 1 quart oil 5 lb 508 lb
Gascolator 1 lb 509 lb
Header tank 4 lb 513 lb
Fuel Shutoff Valve, handle, and fuel lines 1 lb 514 lb
Two gallons of unusable fuel 12 lb 526 lb
Airspeed Indicator and metal pilot line 1.2 lb 527.2 lb
Altimeter 1.2 lb 528.4 lb
Compass 0.5 lb 528.9 lb
Oil Pressure Gauge 0.4 lb 529.3 lb
Oil Temperature Gauge 0.3 lb 529.6 lb
Exhaust Temperature Gauge 0.4 lb 529.9 lb
Tachometer 1 lb 530.9 lb
Throttle and Mixture Control 3 lb 533.9 lb
Carb Heat Control 0.4 lb 534.3 lb
Cabin Heat Control 0.5 lb 534.8 lb
Magneto Switch and ignition wiring 0.5 lb 535.2 lb
Choke 0.4 lb 535.6 lb
Parking brake 1 lb 536.7 lb
Upholstery 6.8 lb 543.5 lb
Carpet 5.1 lb 548.6 lb
Soundproofing 4.5 lb 553.1 lb
Headliner 3.2 lb 556.3 lb
Baggage compartment, cloth type with lid 5.2 lb 561.5 lb
Front Seat with Belt 13.7 lb 575.2 lb
Rear Seat with Belt 18.2 lb 593.4 lb
Heel Brakes 2.8 lb 596.2 lb
Landing Gear, bungee type 42 lb 638.2 lb
Tail wheel 6x2.00 4 lb 642.2 lb
Main Wheel Assemblies with brakes 12 lb 654.2 lb
8.00-4, 4-ply tires 20 lb 674.2 lb
Bungees 5.5 lb 679.7 lb
Forward struts, sealed, pair 24 lb 24 lb 703.7 lb
Rear struts, sealed, pair 15.5 lb 15.5 lb 719.2 lb
Un-counted items (includes plexiglas, multi strand cable, pulleys not in wing, glue, grommets nor in wing, A/N hardware, hoses not in wing, rivets, nails not in wing, wood not in wing, paint, pedals, control sticks, stick on vinyl letters, placards, cable ties, safety wire, etc.)
37.7 lb (estimated: actual weight -- above list) 37.7 lb
Actual Aircraft Empty Weight in flight attitude with unusable fuel but no oil weighed on a Certified Scale: 756.9 lb
Calculated empty CG is (+16.4)
756.9 lb (+16.4) 12413 < -- CG okay (empty for PA-11 is +12.9 to +17.6)
9.4 --29 --273 < -- Oil
170 +9 1530 < -- Pilot
936.3 (+14.6) 13670 < -- CG okay, dry tanks (normal category for PA-11 is +12.5 to +19.0)
96 +24 2304 < -- Full Fuel
1032.3 (+15.5) 15976 < -- CG okay, full tanks (normal category for PA-11 is +12.5 to +19.0)
170 +36 6120 < -- Passenger
20 +49 980 < -- Baggage
1222.3 (+18.9) 23076 < -- CG okay, full load (normal category for PA-11 is +12.5 to +19.0)
The aircraft is registered in the Experimental category at 1320 pounds, 100 pounds more than a PA-11. Currently it has no electrical system, and can be operated as if it were a normal category PA-11. It could also later have an electrical system installed if desired (which would add ca. 75 pounds).
_____"So, what goes into a pot of pseudo Piper soup?"
Frame (welded and sealed 4130 tubes, control torque tube, blocks, tabs, brackets) 91.5 lb
Floor boards 1/4 inch marine plywood 7.5 lb 99 lb
Stits Polyfiber Cover 42 lb 141 lb
Aluminum cowling 10 lb 151 lb
Two wood spar wings without cover 128 lb 279 lb
Two 9 gallon fuel tanks 16 lb (+24) 16 lb 295 lb
Wooden Sensenich Propeller (A-691 Item 101, 11 lb at --51) 11 lb 306 lb
Spinner 1 lb 1 lb 307 lb
Continental C-90-12F (with manifolds and carb, without mags) 171 lb 478 lb
Two mags, eight ignition cables, eight spark plugs 25 lb 503 lb
Spin on oil filter includes 1 quart oil 5 lb 508 lb
Gascolator 1 lb 509 lb
Header tank 4 lb 513 lb
Fuel Shutoff Valve, handle, and fuel lines 1 lb 514 lb
Two gallons of unusable fuel 12 lb 526 lb
Airspeed Indicator and metal pilot line 1.2 lb 527.2 lb
Altimeter 1.2 lb 528.4 lb
Compass 0.5 lb 528.9 lb
Oil Pressure Gauge 0.4 lb 529.3 lb
Oil Temperature Gauge 0.3 lb 529.6 lb
Exhaust Temperature Gauge 0.4 lb 529.9 lb
Tachometer 1 lb 530.9 lb
Throttle and Mixture Control 3 lb 533.9 lb
Carb Heat Control 0.4 lb 534.3 lb
Cabin Heat Control 0.5 lb 534.8 lb
Magneto Switch and ignition wiring 0.5 lb 535.2 lb
Choke 0.4 lb 535.6 lb
Parking brake 1 lb 536.7 lb
Upholstery 6.8 lb 543.5 lb
Carpet 5.1 lb 548.6 lb
Soundproofing 4.5 lb 553.1 lb
Headliner 3.2 lb 556.3 lb
Baggage compartment, cloth type with lid 5.2 lb 561.5 lb
Front Seat with Belt 13.7 lb 575.2 lb
Rear Seat with Belt 18.2 lb 593.4 lb
Heel Brakes 2.8 lb 596.2 lb
Landing Gear, bungee type 42 lb 638.2 lb
Tail wheel 6x2.00 4 lb 642.2 lb
Main Wheel Assemblies with brakes 12 lb 654.2 lb
8.00-4, 4-ply tires 20 lb 674.2 lb
Bungees 5.5 lb 679.7 lb
Forward struts, sealed, pair 24 lb 24 lb 703.7 lb
Rear struts, sealed, pair 15.5 lb 15.5 lb 719.2 lb
Un-counted items (includes plexiglas, multi strand cable, pulleys not in wing, glue, grommets nor in wing, A/N hardware, hoses not in wing, rivets, nails not in wing, wood not in wing, paint, pedals, control sticks, stick on vinyl letters, placards, cable ties, safety wire, etc.)
37.7 lb (estimated: actual weight -- above list) 37.7 lb
Actual Aircraft Empty Weight in flight attitude with unusable fuel but no oil weighed on a Certified Scale: 756.9 lb
Calculated empty CG is (+16.4)
756.9 lb (+16.4) 12413 < -- CG okay (empty for PA-11 is +12.9 to +17.6)
9.4 --29 --273 < -- Oil
170 +9 1530 < -- Pilot
936.3 (+14.6) 13670 < -- CG okay, dry tanks (normal category for PA-11 is +12.5 to +19.0)
96 +24 2304 < -- Full Fuel
1032.3 (+15.5) 15976 < -- CG okay, full tanks (normal category for PA-11 is +12.5 to +19.0)
170 +36 6120 < -- Passenger
20 +49 980 < -- Baggage
1222.3 (+18.9) 23076 < -- CG okay, full load (normal category for PA-11 is +12.5 to +19.0)
The aircraft is registered in the Experimental category at 1320 pounds, 100 pounds more than a PA-11. Currently it has no electrical system, and can be operated as if it were a normal category PA-11. It could also later have an electrical system installed if desired (which would add ca. 75 pounds).
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