02-23-2009, 10:23 PM
If this is the one I think it is, it was a failure because it couldn't negotiate any curves at all.
Here are the condensed comments from one site:
Here are the condensed comments from one site:
Quote:It was clear (though never publicly admitted) that the AA20 was a complete disaster. It spread the track, wrecked every set of points it passed over, and derailed almost every time it moved. Steaming was poor and the locomotive too powerful for existing couplers and too long for the turntables. After 1935, it was stored for 25 years at the Shcherbinka test facility and finally scrapped in 1960.