If you register, you can do a lot more. And become an active part of our growing community. You'll have access to hidden forums, and enjoy the ability of replying and starting conversations.

Drain Cocks

Discussion in 'Locomotive M.I.C.' started by Robert Dove, Mar 24, 2009.

  1. Robert Dove

    Robert Dove New Member

    Joined:
    Feb 28, 2008
    Messages:
    26
    Likes Received:
    3
    Gender:
    Male
    Location:
    Bury
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Whilst as the WSR gala this weekend i joined a train at Williton Headed for Crowcombe hauled by 45231.As most know the road to Crowcombe is against the grade with the engine working all the time .For the entire journey the drain cocks on the engine were open ,now i know the reason for drain cocks is to eject condensed water from the cylinders to prevent any damage as water does not compress .Why would the driver have the drains cocks open all the time instead of just a while whilst starting off from rest to clear any water that has condensed .Im sure that there is a reason for this so if there are any enginemen out there who could enlighten me please do and many thanks in advance .
     
  2. Steve

    Steve Part of the furniture Friend

    Joined:
    Oct 7, 2006
    Messages:
    9,476
    Likes Received:
    4,971
    Occupation:
    Gentleman of leisure, nowadays
    Location:
    Near Leeds
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Were the drain cocks open or were one or perhaps two stuck open? Black Fives (and other LMS locos) are fairly notorious for sticking drain cocks. They rely on the steam pressure to shut them and quite often it doesn't. They are also prone to getting bits stuck in them. It is annoying for the footplate crew when this happens as you can't do much to sort it out until you next stop when often all that is needed is a gentle talking to with a hammer or spanner.
    If the driver has deliberately left the cocks open then he must have been having problems with the loco priming (water being carried over from the boiler), for whatever reason. Not unheard of but drivers usually try and get the cocks shut whenever they can, if only to cut down on the noise but more importantly to stop all the lubrication from being blown out.
     
  3. aldfort

    aldfort Part of the furniture

    Joined:
    Mar 4, 2009
    Messages:
    1,671
    Likes Received:
    3,836
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Cardiff
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I should have thought it was mainly due to a priming problem if the driver left them open for that long. That or they had promised a photter that they would. If I was the fireman I'd be annoyed if the driver had simply forgotten to close them but that's pretty unlikely.
     
  4. LMS2968

    LMS2968 Well-Known Member

    Joined:
    Sep 1, 2006
    Messages:
    2,220
    Likes Received:
    2,367
    Gender:
    Male
    Occupation:
    Lecturer retired: Archivist of Stanier Mogul Fund
    Location:
    Wigan
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    I can vouch for that; it's been a recurring problem with 2968 for the whole time she's been in traffic. One reason is that bits break away from the valve rings and then go through the system, to get jammed between the faces of the taps. Usually it's just one side at a time; both sides together is unusual.
     
  5. Robert Dove

    Robert Dove New Member

    Joined:
    Feb 28, 2008
    Messages:
    26
    Likes Received:
    3
    Gender:
    Male
    Location:
    Bury
    Heritage Railway Volunteer:
    No I do not currently volunteer
    The engine arrived from Minehead with the drain cocks open ,the crew did nothing to try and clear any blockages whilst at a stand at the station ,so priming would seem to be the favorite cause perhaps ! .
     
  6. olly5764

    olly5764 Member

    Joined:
    Dec 29, 2006
    Messages:
    1,778
    Likes Received:
    733
    Gender:
    Male
    Occupation:
    Engineer
    Location:
    Normally in a brake van somewhere
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Not nessesaryly, it can take a good while to take the taps appart and pick out the broken bits of piston ring, I would susspect that to have primen for the whole length of the line is un-likely, I would say that it is more likely that they were stuck.
     
  7. 1472

    1472 Well-Known Member

    Joined:
    Aug 26, 2008
    Messages:
    1,613
    Likes Received:
    1,765
    At least one cock on this loco was blowing all the way MH - BL on the last trip yesterday - in the oft found LMS way.
     
  8. olly5764

    olly5764 Member

    Joined:
    Dec 29, 2006
    Messages:
    1,778
    Likes Received:
    733
    Gender:
    Male
    Occupation:
    Engineer
    Location:
    Normally in a brake van somewhere
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Good ain't they!!! Myself and a driver spent aweek last year trying to pick all the bits out of 2986's taps, They would seat (If you were lucky) in the morning, only to Jam again by the end of the day.
     
  9. LMS2968

    LMS2968 Well-Known Member

    Joined:
    Sep 1, 2006
    Messages:
    2,220
    Likes Received:
    2,367
    Gender:
    Male
    Occupation:
    Lecturer retired: Archivist of Stanier Mogul Fund
    Location:
    Wigan
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Well, at least you don't get any hydraulicking!

    To be fair, she did have a serious problem of breaking valve rings, the solution now hopefully found and PERMANENT repairs made.
     
  10. olly5764

    olly5764 Member

    Joined:
    Dec 29, 2006
    Messages:
    1,778
    Likes Received:
    733
    Gender:
    Male
    Occupation:
    Engineer
    Location:
    Normally in a brake van somewhere
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    This is true, how ever it was getting irritating when the daily prep was light the fire, persuade a cleaner to make a start on the cab, take the taps appart and pick out valve rings!
     
  11. Avonside1563

    Avonside1563 Member

    Joined:
    Jul 13, 2007
    Messages:
    1,136
    Likes Received:
    234
    Gender:
    Male
    Location:
    Bolton's Sidings, just behind the running shed!
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Carbon deposits breaking away can also be a problem for sticking taps. It's a regular problem on Austerity tanks too although nipping underneath and tapping them with a hammer can often effect a temporary cure rather than taking them down completely!
     
  12. olly5764

    olly5764 Member

    Joined:
    Dec 29, 2006
    Messages:
    1,778
    Likes Received:
    733
    Gender:
    Male
    Occupation:
    Engineer
    Location:
    Normally in a brake van somewhere
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Lol, well, these were very definately bits of ring.
     
  13. boldford

    boldford New Member

    Joined:
    Aug 22, 2005
    Messages:
    436
    Likes Received:
    1
    Ian, your eyes are acting up. The number I read on both the cabside and smokebox was 42968.
     
  14. LMS2968

    LMS2968 Well-Known Member

    Joined:
    Sep 1, 2006
    Messages:
    2,220
    Likes Received:
    2,367
    Gender:
    Male
    Occupation:
    Lecturer retired: Archivist of Stanier Mogul Fund
    Location:
    Wigan
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Hmmm... She's always been 2968 to me, too!
     
  15. Steamchest

    Steamchest New Member

    Joined:
    May 17, 2006
    Messages:
    169
    Likes Received:
    15
    Gender:
    Male
    Occupation:
    Coach driver
    Location:
    Weston-super-Mare
    Heritage Railway Volunteer:
    No I do not currently volunteer
    Having seen a couple of videos of 45231 at work at the Gala, as I'm sure many here have done, I too came to the conclusion that it was only one drain cock that was stuck. Once under way, only one of the four exhaust beats was accompanied by a blast from an open drain cock!

    John.
     
  16. olly5764

    olly5764 Member

    Joined:
    Dec 29, 2006
    Messages:
    1,778
    Likes Received:
    733
    Gender:
    Male
    Occupation:
    Engineer
    Location:
    Normally in a brake van somewhere
    Heritage Railway Volunteer:
    Yes I am an active volunteer
    Come on Brian, you know me, just keep bashing the keys and hope they are in there right place. I did get the number right, just not in the right order.
     
  17. southyorkshireman

    southyorkshireman New Member

    Joined:
    Jun 28, 2005
    Messages:
    6,638
    Likes Received:
    11
    Location:
    Rotherham 41D or Metropolitan Railway boardroom
    If you're hoping to be compared to Eric Morecombe, you'll have to wait a while!
     
  18. boldford

    boldford New Member

    Joined:
    Aug 22, 2005
    Messages:
    436
    Likes Received:
    1
    Exactly like my singing.

    All the right notes; but not necessarily in the right order!
     

Share This Page