Bionicle Backpack Helicopter Dimensions:

Main rotor diameter: 39.00 studs / 312.00 mm / 12.28 in, Real size: 3.12 m / 10 ft 2.76 in
Main rotor disc area: 1194.59 sqstuds / 764.54 sqcm / 118.50 sqinch, Real size: 7.65 sqm / 82.19 sqfeet
Tail rotor diameter: 7.00 studs / 56.00 mm / 2.20 in, Real size: 0.56 m / 1 ft 10.04 in
Tail rotor disc area: 38.48 sqstuds / 24.63 sqcm / 3.82 sqinch, Real size: 0.25 sqm / 2.65 sqfeet
Distance between main- and tail rotor axis: 17.00 studs / 136.00 mm / 5.35 in, Real size: 1.36 m / 4 ft 5.51 in
Clearance under main rotor: 27.00 studs / 216.00 mm / 8.50 in, Real size: 2.16 m / 7 ft 0.98 in
Lenght: 30.50 studs / 244.00 mm / 9.61 in, Real size: 2.44 m / 8 ft 0.00 in
Lenght folded: 10.00 studs / 80.00 mm / 3.15 in, Real size: 0.80 m / 2 ft 7.48 in
Width folded: 11.00 studs / 88.00 mm / 3.46 in, Real size: 0.88 m / 2 ft 10.63 in
Height: 28.00 studs / 224.00 mm / 8.82 in, Real size: 2.24 m / 7 ft 4.13 in
Height folded: 19.50 studs / 156.00 mm / 6.14 in, Real size: 1.56 m / 5 ft 1.38 in