neilw
now that's what I call a garden railway
Posts: 284
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Post by neilw on Jan 13, 2022 18:27:57 GMT
Were the headcodes of the standard stock used right up to their withdrawal even when mixed in with 59/62 stock or were they used as marker lights for a while?
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roythebus
Pleased to say the restoration of BEA coach MLL738 is as complete as it can be, now restoring MLL721
Posts: 1,275
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Post by roythebus on Jan 17, 2022 13:22:50 GMT
As far as I remember proper headcodes were carried until final withdrawal. Old traditions die hard. The lights on the standard stock weren't individually switchable as they were wired in series from line volts.
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Post by t697 on Jan 17, 2022 16:32:24 GMT
As far as I remember proper headcodes were carried until final withdrawal. Old traditions die hard. The lights on the standard stock weren't individually switchable as they were wired in series from line volts. So were the headcodes all about the same number of lamps? Or did the switching system bring in substitution resistors instead perhaps? I seem to recall these trains had a lot of rather horrible looking edge wound resistors on mica strips with end pieces that clipped into fuse clips. All rather vintage! |
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Post by Dstock7080 on Jan 17, 2022 17:10:59 GMT
As far as I remember proper headcodes were carried until final withdrawal. Old traditions die hard. The lights on the standard stock weren't individually switchable as they were wired in series from line volts. So were the headcodes all about the same number of lamps? Or did the switching system bring in substitution resistors instead perhaps? I seem to recall these trains had a lot of rather horrible looking edge wound resistors on mica strips with end pieces that clipped into fuse clips. All rather vintage! Headcodes on Standard, '38, CO/CP Stock were from fixed lamps covered by internal shutters |
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roythebus
Pleased to say the restoration of BEA coach MLL738 is as complete as it can be, now restoring MLL721
Posts: 1,275
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Post by roythebus on Jan 18, 2022 0:34:12 GMT
The bulbs were wired in series and as Dstock7078 says were covered with sliding or pivoting shutters. One light in the series was switchable to feed either the cab light or the air gauge light. 38/COP etc were low voltage lamps fed from battery or MG at 110v if I remember correctly. Q and standard stock were the same bulbs but with 6 or 7 in series, probably 7 to take into account over-voltage. Trying to rememebr this from 1970 is sometimes difficult!
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Post by brigham on Jan 18, 2022 8:41:05 GMT
My only recollection of 5-lamp headcodes is that, if the middle one is lit, it's going via the Bank.
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neilw
now that's what I call a garden railway
Posts: 284
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Post by neilw on Jan 19, 2022 6:07:29 GMT
My only recollection of 5-lamp headcodes is that, if the middle one is lit, it's going via the Bank. On the Central Line, highly likely 😀😀 |
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Post by t697 on Jan 19, 2022 13:52:22 GMT
That many incandescent 60W lamps must have made quite a contribution as a cab heater!
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Post by ted672 on Jan 19, 2022 14:02:12 GMT
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