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Channel 4 Programme

Discussion in 'Heritage Rolling Stock' started by gwalkeriow, Oct 16, 2017.

  1. martin1656

    martin1656 Part of the furniture Friend

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    Thank you Alan, that was part of the information I was after, As you so rightly point out ex PMV Underframes are not always the solution, and using laminated wood with pre formed and drilled attachment points must have made assembly far more straight forward than having to jig and cut then weld back up a metal underframe , and of course, as each is a flat packed assembly, I would imagine the cost per underframe, once the cost of the jigs to form each part is taken out , would actually work out cheaper than having to source the same number of spare underframes, which might need corrosion cut out, before you even start reworking them, as you are only talking the material costs .
     
  2. paulhitch

    paulhitch Part of the furniture

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    I fear you are assuming far too much. As an example, the project not only required meticulous specialist design but also Independent Safety Verification because of its novelty. All likely to incur expense not to be encountered when shortening a PMV underframe.
     
  3. flying scotsman123

    flying scotsman123 Resident of Nat Pres

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    But now that it's been done once, some of those costs ought to be less, which I think is Martin's point, not that the cost of doing it first time was cheaper.
     
  4. paulhitch

    paulhitch Part of the furniture

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    Two sets of underframes were ordered to reduce unit costs. However, the Oldburys have at least two differing underframe lengths. Unwise to assume too much.
     
  5. flying scotsman123

    flying scotsman123 Resident of Nat Pres

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    Paul, your first post said you didn't know, and since then all you've done is rubbish people's questions asked purely out of curiosity.
     
  6. GWR Man.

    GWR Man. Well-Known Member

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    I am a bit rusty using this group of drawings program which was used to produce the parts for the underframe but, if the drawing was done in the right order it should only take about a hour or less to produce a longer or shorter solebars for different coach lengths, as if the solebar length was set from the middle of the solebar and length set from there, it will be a case of just changing about 7 figures if done correctly to get the new length for all the solebars for the different length coaches.
     
  7. jma1009

    jma1009 Member

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    In fairness to Paul, the IOWSR has never, to the best of my knowledge published/made known the actual costs of individual carriage restorations. Just a few details here and now. Gary Walker is probably the best person to ask, and provide the answers. I don't think anyone has ever done detailed costings other than materials bought in for underframes. No idea what the IOWSR paid for the PMVs on the Island Line, but the purchase of 2 from the WSR the other year is well known.

    The IOWSR has a remarkable collection of coaching stock in use.

    And it has a very dedicated band of volunteers and employees committed to continuing the good work.

    Never did I ever think 4115 would be restored, let alone Oldbury No.10!

    Wonderful!

    Cheers,
    Julian
     
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  8. gwalkeriow

    gwalkeriow Well-Known Member

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    Just a quick post, the four new axlebox springs for No 10 cost far more than the total cost of purchase and conversion of a PMV underframe. A PMV underframe would have been totally unsuitable for No 10
     
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  9. paulhitch

    paulhitch Part of the furniture

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    Only if they persist in "guessing". No details of costings have been released although it has been stated that two sets of parts were ordered so as to reduce the unit costs.

    The original Oldbury design needed to be modified to provide for a central steel buffing/dragbox arrangement as the calculations had revealed doubts about the original design. Whether or not the longer vehicles warrant revisiting these calculations I could not say but no assumptions ought to be made regarding designs or costings.
     

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