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SVR General Discussion

Discussion in 'Heritage Railways & Centres in the UK' started by threelinkdave, Aug 20, 2014.

  1. 1472

    1472 Well-Known Member

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    In recent days 43106,7812,4566 have all received valve & piston attention whilst work has also been in progress on 7714 & 7802. In the boilershop plenty is happening on the boilers for 7714 & 75069.
     
  2. Steve

    Steve Resident of Nat Pres Friend

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    Out of interest, how long does a P & V usually take you?
     
  3. 1472

    1472 Well-Known Member

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    Depends what is needed. In some cases a rebore in most cases new rings. Those are custom made on site to suit the loco so it is not a straight in & out situation.
     
  4. Steve

    Steve Resident of Nat Pres Friend

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    I was enquiring about a straightforward P & V exam with the usual decarb and new rings. No special work needed.
     
  5. 1472

    1472 Well-Known Member

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    With a GW one a couple of weeks ago the valves were out within 2 hours of starting & no doubt if new rings had been available off the shelf they could have gone back in again within a few hours or certainly the following day. But then we had a big volunteer gang that day so work was possible on several fronts at the same time. The pistons had already been done with one day to strip & half a day to refit excluding ring manufacture. No large carbon accumulations & the GW valves come out fairly easily due to the ring design.
     
  6. Steve

    Steve Resident of Nat Pres Friend

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    Thanks for this. There's an interesting account of doing a P & V exam on a Super D at Abergavenny, told in 'LNWR Eight Coupled Goods Engines' by Talbot. The loco was positioned so that both side rods could be removed, bushes pressed out and new ones pressed in and rods refitted. About 2 hours, so far. Next remove the front bufferbeam, cylinder and valve covers, and split the valve rods. Spray paraffin over the valves and set fire to it to aid removing the valves. Piston rods split with the aid of a 14lb hammer and pistons removed. Valve gear then dismantled, followed by the conrods. The brasses go away for re-metalling. Pistons and valves are cleaned and re-ringed. Everything is measured up and recorded, ready for next time. Re-metalled big and little ends are then machined up and bedded in, as are the crosshead slippers. Everything is then put back together again, ensuring careful alignment, along with new glands. The re-metalled valve gear slipper blocks are filed to size (as there are no facilities to machine them.) Finally, the loco and tender are split and the intermediate buffer springs are replaced before coupling all back up together. All this took about 8 days for one fitter and an apprentice, assisted by a white metaller to do the bearings. The length of time to do P & V exams seems to take a good bit longer elsewhere!
     
  7. 1472

    1472 Well-Known Member

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    Blimey - that reminds me of a Caerphilly works claim that a general overhaul on a 56xx tank was completed 48 hrs after starting!! - but then a boiler change & similar changing of a multitude of other components very likely took place to make that possible.
     
  8. Kje7812

    Kje7812 Part of the furniture

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    Some more updates on SVRlive showing more of the track relaying and the canopy refurb.
    The Eardington relay is ahead of schedule by about 4 days.
     
  9. D1039

    D1039 Guest

    Chair/GM's 2015-2016 update is at http://www.svrlive.com/Pages/News.aspx

    The Friends of Kidderminster Town station have posted June and October magazines to http://www.kfriends.org.uk/

    SVR has been nominated for a What's On Readers' Award! If you think the Severn Valley Railway is the Best Visitor Attraction in the Midlands please vote at
    http://whatsonlive.co.uk/whats-on-readers-awards

    January Express Points *and Web Round Up* ezine are at http://www.svrlive.com/Pages/ExpressPoints.aspx

    Patrick
     
  10. Kje7812

    Kje7812 Part of the furniture

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  11. Robin Moira White

    Robin Moira White Resident of Nat Pres

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    Why the extension?

    Robin
     
  12. Kje7812

    Kje7812 Part of the furniture

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    I can only assume no suitable candidate was found but I do not know for certain.
     
  13. Kje7812

    Kje7812 Part of the furniture

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    A minor update from Kidderminster:
    Some of the rather ugly palisade fencing in the car park is being replaced by GWR speartop fencing
    IMAG0257.jpg
    IMAG0284.jpg IMAG0283.jpg
    First photo taken on the 20th and the other two today.
     
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  14. Kje7812

    Kje7812 Part of the furniture

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  15. Kje7812

    Kje7812 Part of the furniture

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    So less than a week till the first day of the 2016 season.
    Timetable A is in operation in February, and on the 13th and 14th, the AS2 turn will be steam hauled rather than diesel operated which it will be on all other dates in February.
     
    Last edited: Feb 6, 2016
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  16. threelinkdave

    threelinkdave Well-Known Member

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    Sorry but Feb midweek AS2 is the DMU, I know becausi I am guard on 16th
     
  17. Kje7812

    Kje7812 Part of the furniture

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    If you read it again, I say on the 13th and 14th it is steam, while the rest it is diesel.
     
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  18. cymroglan

    cymroglan Member

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    Hoping to make my first visit of the year next week. I rate this railway so highly! I have to say that just one thing niggles me, and it's important to me! I'd love it if they announced the weekend loco rosters a little earlier than late Friday afternoon. It would make planning my visits so much easier! I still haven't caught Taw Valley.....
     
  19. Kje7812

    Kje7812 Part of the furniture

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    Sometimes it is done on the Thursday before, but yes it would be nice if a bit more notice was available. Most other railways manage it.
     
  20. Kje7812

    Kje7812 Part of the furniture

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