Wasp

[Greybeard]

Not saying it is complicated or anything, but the Pratt & Whitney R-4360 Wasp Major is an American 28-cylinder four-row radial piston aircraft engine designed and built during World War II. First run in 1944, at 4,362.5 cu in (71.5 L), it is the largest-displacement aviation piston engine to be mass-produced in the United States, and at 4,300 hp (3,200 kW) the most powerful.

It was the last of the Pratt & Whitney Wasp family, and the culmination of its maker's piston engine technology.

[muskrat]

Plumbers nightmare 

[Rex]

I wonder how that engine would compare to the prop engines still used in the Russian bombers that  probe UK air defences on a daily basis?

[RichardL]

I reckon those have zero cylinders.

Richard L.

[Joolstacho]

Quote"  I wonder how that engine would compare to the prop engines still used in the Russian bombers that  probe UK air defences on a daily basis?"
I wonder where this piece of paranoia came from? - Don't you think the Russians have enough on their hands right now?

[Rex]

"Paranoia"? Daily reality, and has been for decades.
As for "do the Russians have enough on their hands right now" I would say that they clearly don't as the murderous dictator Putin is still in control.