Suspect that possibly that Ruskie freight carrier is/was the largest-can't recall the name but it has a bit missing underneath,probably to accomodate a Bungalow

Not sure of the speed record,but has anyone tried looping the Bell? ???

Biggest flying (size and weight): Mi-26 (100-200 passengers depending on the overload factor the pilot accepts 26 000 kg cargo inside or on a hook. firefighting version has a 16 000 liter water container)

i think all those guys can get in this thing whitout overloading it

Biggest flown-a-few-times. this is still the absolute record holder in size and cargo capacity: Mi-12 (take 2 Mi-6 drivetrains, put them on wings and add the largest fuselage you safely can get in the air with those)
max load: 40 000kg


Previous record-holders:
Size: Mi-6


Cargo: Mi-10

now you probably got the reason why its illegal to use russian helos in the USA... they cant stand that they are bigger than the ones they make themselves