Fantasy: Power car on both ends on a IC225 set?

[themiller]

The principle here is, I imagine, the same as with any 'super-power' formations - there is more power (more or less double with a 91 at each end) to overcome wind resistance at high speeds so that may add a little, but the governing issue for top speed will always be the gearing of the traction. A 91 has got to 162mph (I think) and I don't know if that was re-geared specially. The acceleration would be far greater, of course.

I believe that the wheelsets were new so maximum diameter and the rake of coaches had been reduced for that run.