Difficult to compare as the "Westerns" were hydraulic transmission as with most diesels on the Western Region at that time.
I saw all the class 52 in BR service and did many journeys behind them.
The only minor problem as I saw it was the fact that they were rather slow at getting up to full speed but once going they were as good as any other diesel of the time.
I remember the 50s when first introduced being used on the Crewe -Glasgow(Central) section of the West coast main line before it was electrified.
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Either he's dead or my watch has stopped.
Groucho Marx
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