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DRICO
Feb 18, 2018 7:55:22 GMT
Post by programmes1 on Feb 18, 2018 7:55:22 GMT
Before connect/train radio there was a system called DRICO (Driver to Controller communication). The lines that had it and I think it was all lines except the Victoria. Test's were carried out by the driver's on specific days and times, what I am after is where on each line were these test's carried out.
TIA
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DRICO
Feb 18, 2018 20:57:56 GMT
Post by Colin D on Feb 18, 2018 20:57:56 GMT
I have a vague recollection of doing a test after entering the tunnel at Newbury Park. This was done by Hainault crews. I’m sure there were other locations maybe booked from other depots, but that’s about it for my memory.
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DRICO
Feb 18, 2018 22:25:12 GMT
Post by Dstock7080 on Feb 18, 2018 22:25:12 GMT
Working Timetables gave the locations where extra time was allowed for DRICO Tests to be undertaken.
Just remembered i had District Line Set Working Book No.8 from 1979 to hand:
code: extra time allowed for DRICO test between:
YB Mile End and Bow Road
YE West Kensington and Earl's Court
YW West Brompton and Fulham Broadway
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DRICO
Feb 19, 2018 9:42:29 GMT
Post by programmes1 on Feb 19, 2018 9:42:29 GMT
I have a vague recollection of doing a test after entering the tunnel at Newbury Park. This was done by Hainault crews. I’m sure there were other locations maybe booked from other depots, but that’s about it for my memory. Colin, Thanks. Working Timetables gave the locations where extra time was allowed for DRICO Tests to be undertaken. Just remembered i had District Line Set Working Book No.8 from 1979 to hand: code: extra time allowed for DRICO test between:YB Mile End and Bow Road YE West Kensington and Earl's Court YW West Brompton and Fulham Broadway Thanks I shall have to find a source of old WTTs for all lines. <<superteacher: posts merged>> |
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roythebus
Pleased to say the restoration of BEA coach MLL738 is as complete as it can be, now restoring MLL721
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DRICO
Feb 20, 2018 9:27:35 GMT
Post by roythebus on Feb 20, 2018 9:27:35 GMT
We had a job at PG where the driver would test the drico between West Brompton and Fulham Broadway, usually a late evening run on the w/b.
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PGtrips
Ahh... don't you just love PG?
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DRICO
Mar 9, 2018 14:17:37 GMT
Post by PGtrips on Mar 9, 2018 14:17:37 GMT
What did testing the DRICO actually involve, to justify the extra time in the schedules? Would the train be stopped in section to allow this to take place?
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towerman
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DRICO
Mar 9, 2018 14:59:20 GMT
Post by towerman on Mar 9, 2018 14:59:20 GMT
To test DRICO in the depot you simply clipped the wires of your train to the wires of the one next door the you & another fitter could talk to each other.
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Post by Dstock7080 on Mar 9, 2018 15:19:01 GMT
What did testing the DRICO actually involve, to justify the extra time in the schedules? Would the train be stopped in section to allow this to take place? Yes indeed the train would need to be stopped, fully secured (brakes etc.) - open cab cabinet - open cab door on side nearest to wires - unravel two long twisted wires (similar cloth covered wire on domestic telephones) with metal clips attached - clip onto tunnel telephone wires (didn’t matter which way round) - speak into cab annunciator (or dedicated handset as provided on D and 1983 Stock) - usually with load “hullo! hullo! hullo! DRICO test train xxx to Controller” - wait for Controller reply - confirm with Controller test successful - usually finished with Controller saying: “off clips Driver!” - remove clips, rewind wire and store in cab cabinet. |
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Deleted
Deleted Member
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DRICO
Mar 9, 2018 15:25:33 GMT
Post by Deleted on Mar 9, 2018 15:25:33 GMT
What did testing the DRICO actually involve, to justify the extra time in the schedules? Would the train be stopped in section to allow this to take place? Yes indeed the train would need to be stopped, fully secured (brakes etc.) - open cab cabinet - open cab door on side nearest to wires - unravel two long twisted wires (similar cloth covered wire on domestic telephones) with metal clips attached - clip onto tunnel telephone wires (didn’t matter which way round) - speak into cab annunciator (or dedicated handset as provided on D and 1983 Stock) - usually with load “hullo! hullo! hullo! DRICO test train xxx to Controller” - wait for Controller reply - confirm with Controller test successful - usually finished with Controller saying: “off clips Driver!” - remove clips, rewind wire and store in cab cabinet. What would you be required to do if there was no reply? |
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DRICO
Mar 9, 2018 17:15:48 GMT
Post by zbang on Mar 9, 2018 17:15:48 GMT
Weren't these wires also used to discharge the traction current? Or was that a separate set?
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DRICO
Mar 9, 2018 18:09:08 GMT
via mobile
Post by Dstock7080 on Mar 9, 2018 18:09:08 GMT
What would you be required to do if there was no reply? just reset everything and report at next station. Weren't these wires also used to discharge the traction current? Or was that a separate set? Yes, it was the same wires (now decommissioned), using the different equipment, DRICO or tunnel telephone handset would give alternative results. DRICO was primarily for an information source, tunnel telephone handset was for emergency use. |
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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 Mar 12, 2018 12:46:06 GMT
Yes, using the emergency handset which the motorman carried in a wooden box would cut off the traction current.
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