Union of South Africa A4

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Stanierstott36
NER Y7 0-4-0T
Posts: 1
Joined: Mon Apr 17, 2017 12:48 pm

Union of South Africa A4

Post by Stanierstott36 » Mon Apr 17, 2017 1:05 pm

On a trip to the ELR this weekend I was fortunate to ride behind this wonderful steam engine As I was gazing on in wonder as she backed on to her train I noticed a very high pitched whining sound rising in intensity coming from the motion or that area ! It didn't seem to produce any steam and sounded more like a very powerful vacuum cleaner starting up and switching down as she got underway ...can any of you out there shed any light on this ?
I am guessing it might be braking related ????

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