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Post by 1972stock3567 on Mar 16, 2023 16:45:42 GMT
Anyone know why I always here the motors on the 72 stock cut out and relay especially in wet weather. Is it something to do with wheelslip protection or the 3rd rail and 4th rails cutting out on a junction which causes that sudden cut out?
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towerman
My status is now now widower
Posts: 2,886
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Post by towerman on Mar 16, 2023 17:38:13 GMT
72 TS is fitted with wheel spin relays which sometimes operate in wet weather esp if the T/Op has the train in acceleration rate 2 rather than 1.
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Post by 1972stock3567 on Mar 16, 2023 18:19:51 GMT
Yep that's what I was hearing!
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Post by t697 on Mar 16, 2023 20:28:01 GMT
A sudden cut off would probably be current rail gaps as mentioned. As built, when wheelspin was detected, that also resulted in the linebreakers opening and the equipment notching up from off again, at the lower rate of acceleration. Back in the early 80s this was modified so that wheelspin detection results in the equipment notching back which reduces the current and the wheelspin stops then notching up at the lower rate of acceleration can resume. This made the spin recovery smoother.
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