Aye, Mallard hit 126.5mph but it was downhill (Stoke bank) and she paid the price for it, with her big end overheating and her having to limp back to Peterborough after the record was made and then back to Doncaster for repairs.
But, she is a beaut alright. But beauty is in the eye of the beholder as they say, for example, I happen to love the following locos:
The Stroudley A1X Terrier tank locomotive
Unrebuilt Bulleid West Country class
Stirling Single
Riddles Standard class 9F
And finally, the Bulleid Q1...