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A2 60532 Blue Peter

Discussion in 'Steam Traction' started by big.stu, Nov 3, 2014.

  1. Foxhunter

    Foxhunter Member

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    Ummm..... unless I'm being dense, the two original A1 plates were a sandwich at the leading axle then a single plate behind the cylinders, so the A2 block only needs to be thickness of one fame plate wider, ie; 30mm or the imperial equivalent.

    Foxy
     
  2. class8mikado

    class8mikado Well-Known Member

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    Perhaps its me being dense but most locos have a plate each side ? So the sandwich makes a plates difference each side ie 2 x the offset ?
     
  3. std tank

    std tank Part of the furniture

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    Every locomotive has a set dimension between the frames, immaterial of frame thickness. It is the components on the outside of the frames that are altered to take into account various frame thicknesses.
    For example the Stanier Class 5s were built with three different frame thicknesses, 1",1-1/16" and 1-1/8". All measured 4'-1 1/2" between the frames. The width between the centrelines of the outside cylinders had to be maintained, as well. To achieve this, different amounts of metal were removed from the mounting faces of the cylinder blocks, depending on the frame thickness.
     
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  4. Foxhunter

    Foxhunter Member

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    Sorry, yes of course, I was thinking of the difference each side, rather than both!

    Foxy.
     
  5. 26D_M

    26D_M Part of the furniture

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    Good suggestions, equally applicable to the centre block being replaced in 46115 during the current overhaul?
     
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  6. andalfi1

    andalfi1 Active Member

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    :):)
    Likewise the Monoblock from the V2 when they do that...:)
     
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  7. silverfox2512

    silverfox2512 New Member

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    the A1 trust have had 10 years to ask Haynes if they haven't, which they haven't, then they must think the same
     
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  8. S.A.C. Martin

    S.A.C. Martin Part of the furniture

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    I rather think you're all reading far too much into a few lines in a book that is licensed to tell the story.

    Particularly as Tornado has always been described as the 50th Peppercorn A1.
     
  9. class8mikado

    class8mikado Well-Known Member

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    An interesting point. does such a feat of engineering on display outside the Loco. ( like the deltic engine at NRM) inform and educate more than if retained inside the loco for reasons of keeping that Loco. 'Intact / Original' ?
     
  10. MellishR

    MellishR Part of the furniture Friend

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    To my mind, if a significant component such as a cylinder block is unfit for further use, displaying it for all to see and fitting the loco with a replacement is far better than leaving it in situ where it is neither useful nor visible.
     
  11. Sawdust

    Sawdust Member

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    I think at the end of the day, it's a hair that's not worth splitting or getting wound up about. Not when it's so encouraging to see forum members of such youth.

    Sawdust.
     
  12. W.Williams

    W.Williams Active Member

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    So who do we approach to ask the question?

    It would be a real crime if the old block goes for scrap.
     
  13. W.Williams

    W.Williams Active Member

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    NRM, Crewe, where ever. What's important, to me anyway, is that it ends up somewhere where real aspiring engineers can be influenced by it and learn something. I have no preference as to where is resides.
     
  14. 26D_M

    26D_M Part of the furniture

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    Quite and hopefully neither block from 60532 or 46115 will be scrapped, its not as if either owner needs to cash them in financially.
     
  15. W.Williams

    W.Williams Active Member

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    Scrap value is buttons anyway. £100/tonne or so...
     
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  16. Richard Roper

    Richard Roper Member

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    I would think the owners would keep hold of them as a reference point maybe?
    On a different scale, but same scenario, I keep any major bodywork components I remove from the bus I'm restoring, and keep them as the original reference point for having new parts made, ie. all the dimensions are there, and all parts I have made are 1st. generation copies. If I ever need more making, I would always supply either the original part, or the dimensions from it, to whoever was making the replacement.

    Richard.
     
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  17. silverfox2512

    silverfox2512 New Member

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    very good idea
    silverfox
     

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