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Manning Wardles "YEO" and "EXE" new-build

Discussion in 'Narrow Gauge Railways' started by Old Kent Biker, Aug 15, 2018.

  1. pmh_74

    pmh_74 Well-Known Member

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    You could, in theory, take the whole wheelset out, rotate it 180 degrees and pop it back in the other way round, to even up the wear (assuming that for whatever reason you didn't want to rotate the whole vehicle 180 degrees). I'm aware of one loco group which used to do that with their trailing wheelset.
     
  2. Bikermike

    Bikermike Well-Known Member

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    I've seen it done with a slick on a racing bike, but not elsewhere...

    Funny, I was thinking it must be Wrong, but then railway engines go both ways equally, so it has to work both ways. I wonder if swapping the bearings round would be the issue.

    Obviously a turntable would be the obvious thing - assuming the line has one.
     
  3. 30854

    30854 Resident of Nat Pres

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    In light of the L&B's Pilton turntable, now back in L&B hands, astoundingly on topic!
     
  4. bantamd14

    bantamd14 New Member

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    Surely the 'quartering' would be out if you turned a 'cranked' wheelset by 180 degrees?
     
  5. marshall5

    marshall5 Well-Known Member

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    Don't think so..... If a loco is 'right hand leading' it will remain so if you turn the wheelset round 180 degrees.
    Ray.
     
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  6. Wayne

    Wayne New Member

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    Quite a lot of mainline vehicles do not have tyres anymore. Once they get down to their final cut, wheelset change. Class 66 for example.
     
  7. pmh_74

    pmh_74 Well-Known Member

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    Exactly. The loco concerned was in regular main line use at the time and I understand it saved them a small fortune in tyres.


    Sent from my iPhone using Tapatalk
     
  8. David Humphreys

    David Humphreys New Member

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    As agents for Ringrollers, I received a letter from them re their current problems. Covid and world supply of steel.



    The effects of the COVID-19 pandemic are still felt throughout the world economy, and it drastically
    changed the business landscape as well as the way we do business. As a company, Naledi Ringrollers
    was also affected, and our shortcomings were identified. The war in the Ukraine put even more emphasis
    on areas for improvement.
    We, at Naledi Ringrollers are moving forward from the lessons learned and have put measures in place
    to prevent and repair damages that were done by COVID-19. Our steel supply chain was also impacted
    negatively due to production and shipping delays. Full recovery of our input material supply chain is
    expected within the next 3-4 months.
    Customer service is still of high priority and therefore the advantage of a local office in Europe was
    recognised to ensure that we stay ahead of European market developments. With our strategic partners
    in Europe we are now in the process of establishing an office in Europe. We are expecting our new and
    existing customers to experience true value through our pooled competencies. The full details of this
    exciting development will be presented at InnoTrans in September 2022.
    With excitement we are looking forward at what the future holds.
     
  9. mikehartuk

    mikehartuk New Member

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    To help dispel current myths about the supply of tyres for loco and rolling stock wheels.

    For some years my company Railway Wheelset & Brake Ltd have been the UK distributor of tyres manufactured in Germany to the UK requirements of British Standard 5892 Part 4 ‘Specification for Forged & Rolled Tyres’.

    RWB Ltd supply significant qualities of tyres to various users in the UK. Delivery as normally 12/14 weeks from order on the full range from the smallest narrow gauge to largest mainline pacific tyre. Supplied either as rolled, semi machined or fully finished.

    Website is at:

    https://www.railwaywheelset.co.uk/

    Hope that helps

    Thanks

    Mike Hart
     
    Last edited: May 11, 2022
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  10. Cosmo Bonsor

    Cosmo Bonsor Member

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    If there are eccentrics on the axle for Stephenson's gear, the engine will go in the opposite direction to the one selected by the reverser.
    Seen it done...
     
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  11. Steve

    Steve Resident of Nat Pres Friend

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    Not sure that's right. The eccentrics are placed relative to the crankpin at 90 degrees either side (ignoring angular advance for lap and lead) and the relationship will remain the same if you turn the axle through 180 degrees. If you go from open eccentric rods to crossed eccentric rods by putting the eccentric rod on the wrong eccentric strap, that will happen but not simply putting the wheelset in the wrong way round and attaching the eccentric rod to the correct strap.
    I think.:)
     
  12. Mark Thompson

    Mark Thompson Well-Known Member

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    There's a picture in the latest Trust magazine of the pony truck wheels now fully machined and profiled, and very tidy they look, too. Incidentally, does anyone know the reason for the blue/ green painting of the cylinder castings? Is it to make LH/RH easily identifiable, or something else entirely?
     
  13. Cosmo Bonsor

    Cosmo Bonsor Member

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    Not to get into a blah about it, but I have seen this very thing happen.
    Engine re-wheeled, put into gear, shot off in the unexpected direction.
    Wheelset taken out, turned round,all good.
     
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  14. Steve

    Steve Resident of Nat Pres Friend

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    I'm sure that Tom or some other learned person on here will happily adjudicate. I too have experienced a steam engine going backwards instead of forwards when put into foregear. In my case it was a steam crane and the simple reason was that the eccentric rods had been attached to the wrong end of the expansion links and easily rectified. I've heard of it happening with other locos too, so it is far from a unique event.
    Whilst on the subject, link valve gears are usually arranged so that the link is dropped to put it into foregear but it doesn't have to be. With MW1210 'Sir Berkeley' the links are lifted for foregear. In this condition the it is said to have crossed eccentric rods and the gear gives maximum lead in full gear and not mid gear. Looking at photos of Sharpthorn, I suspect this loco is similarly laid out.
     
  15. Jamessquared

    Jamessquared Nat Pres stalwart

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    I think the illustrious Chairman of the SER is better versed than me in such matters!

    That said, I’ve a vague memory of someone mentioning similar with Baxter. Conceivably the “folded in half” nature of the valve gear presents another opportunity to get things muddled on reassembly - but it’s late, and I’ve been up since silly o’clock, so one to ponder another day!

    Tom
     
  16. ilvaporista

    ilvaporista Part of the furniture

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    I don't know about eccentrics in full size. Having done this in miniature it depends on how the valve gear is set up. I think if the eccentrics are a mirror image then it is possible to rotate the axle. If the eccentrics are arranged with the same one leading on both sides then you reverse the direction. It was a few years ago now so I may have mixed up which way round it was. However easy to fix in 5".
     
    Last edited: May 15, 2022
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  17. meeee

    meeee Member

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    It was to identify which loco they were for. There was also a red cylinder casting for Lyd.
    Tim
     
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  18. Steve

    Steve Resident of Nat Pres Friend

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    You're not wrong and, having thought about how rotating the wheelset could cause the loco to go in reverse, this was the conclusion I had come to. All wheelsets I've had dealings with have had mirror image eccentrics but I'm sure that there will be ones out there with non-mirror image eccentrics, though as there is nothing fundamentally wrong with that arrangement.
     
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