The F4U-1 in the game seems to leap off the CV when rolling from spawn point while the -1D wallows and flops when rolling from the spawn point and the -1C is a 50/50 shot at getting airborne from the spawn point. There is not that much difference in the Hellcat and the different variant Corsairs weights for the flight characteristics to be so different on take off. I may be very wrong in my assumption but at least that is what I see. Here are the engines and weights for two variants of Corsair and the basic F6F.
F4U-1A
Powerplant:
Model: Pratt & Whitney R-2800-8
Type: Radial piston engine
Model: One Horsepower: 2,000 hp
Dimensions:
Wing Span: 12.5m (41 ft. 0 in.)
Length: 10.16m (33 ft. 4 in.)
Height: 4.9m (16 ft. 1 in.)
Wing Area: 29.17 mē (314 sq ft.)
Weights:
Empty: 4074 kg (8,982 lb)
Maximum Take-Off: 6350 kg (14,000 lb)
F4U-1D specifications
Weight: empty: 4100 kg / 9040 lbs; with full load: 6400 kg / 14100 lbs
Engine: Pratt&Whitney R-2800 Double Wasp, 18 cylinders
Power: 2200 hp
Armament: 6x 12.7 mm (.50cal) machine guns in the wings
Performance: Max speed: 635 km/h / 395 mph / 343 knots
Ceiling: 11280 m / 37000 ft
Weights
Empty Weight: 8,695-lbs
Gross Weight: 12,039-lbs
Maximum T/O Weight: 13,120-lbs
Powerplants
No. Engines: One
Engine Manufacturer: Pratt & Whitney
Engine Designation: R-2800-8W Double Wasp, 18-cylinder radial air-cooled, two-stage two-speed supercharged engine with water injection system for emergency power.
Engine Power: 2,000-hp for take-off
1,975-hp at 16,900 feet
2,230-hp with water injection at sea level
Propeller: Hamilton Standard three-bladed hydromatic variable pitch constant speed propeller
Propeller Diameter: 13 feet 4 inches
Internal Fuel Capacity: 237 US-gal
Auxiliary Fuel Tanks: Two 100-171 US-gal
Oil: 20-20.45 US-gal
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F6F Plane Stats:
Powerplant:
Early Production:
Model: Pratt & Whitney R-2800-10 Double Wasp
Type: 18-cylinder dual-row radial engine
Horsepower: 2,000 hp
From January 1944 (Final F6F-3 batch):
Model: Pratt & Whitney R-2800-10W Double Wasp
Type: 18-cylinder dual-row radial engine
With Water Injection
Horsepower: 2,200 hp
Dimensions:
Wing Span: 13.05m (42 ft. 10 in.)
Length: 10.2m (33 ft. 7 in.)
Height: 3.99m (13 ft. 1 in.)
Wing Area: N/A
Weights:
Empty (F6F-3): 4101 kg (9,042 lb)
Loaded: 5528 kg (12,186 lb)
Clean: 6000 kg (13,228 lb)
Maximum (F6F-5N): 6443 kg (14,250 lb)