Shots of an HH-53 Heli VERY close to my house

[C]

Exactly. As I pointed out earlier, the main difference between the S-55 & S-58 is the powerplant. The S-55 is piston-engined & the S-58 is gas-turbine powered.

I think that may be too much of a generalisation as I think the S-58s were radial powered too (See the H-34 above...).

The other main difference with the S-55 and S-58 is the rear fuselage/tail boom, high set on the 55 (trying very hard not to say Whirlwind!)  and large and chunky on the 58 (trying very hard not to say Wessex!)...

Until today I hadn't noticed how similar they were...

[ozzy72]

Whatever it may be, those are great shots 10_Gs

[C]

Whatever it may be, those are great shots 10_Gs

Quite. Must have been quite a tedious job shuffling back and forth all day...

Charlie

[Hagar]

I think that may be too much of a generalisation as I think the S-58s were radial powered too (See the H-34 above...).

Ah OK. Looks like I was mistaken. This is where the confusion sets in. I was thinking of the Westland versions. I believe I'm right in saying that all versions of the Wessex were gas turbines.

[10_Gs]

I'm more of a plane-freak myself, so I don't know a lot about helicopters, can you tell?

[C]

I believe I'm right in saying that all versions of the Wessex were gas turbines.

Indeed...