Ebor Flyer - A1ST and Tornado: 14/04/18

Unfortunately you may be correct in what you predict....
Inside valve gear being completely ripped out from under the loco is a very serious failure, and one that the authorities will be taking a great interest in.
The parts lying in the four foot are quite clearly the bottom of the sheared combination lever, union link and the drop link having been broken off the crosshead. Something was seriously a miss for this to have happened.
Not a good day for steam.

 

If you check the video, you will see it is not on the adjacent, it occupies the same four foot as the train, good to see the fastenings are still complete as well.

 

Apologies - I think you are correct and that is helpful in itself as the shed part (were there others we haven’t seen?) has stayed within the trains envelope. Do not see where the comment about the entire motion coming down comes from unless the poster has inside (no pun intended) knowledge. Inside valve fear being completely ripped out appears to me to be an inflammatory and comment without base?

 

My video from Biggleswade... moments before Tornado came to a stand.

James

 

Well, he is clearly correct in his identification of the failed components and I could not add more to his description of the clues to the failure.

 

Nice footage James there let's hope she returns to the mainline soon? Kind regards Andrew

 

Just a quick question and then I’m out of here as Herr Toni suggests. Please name all the parts of the inside valve gear and identify where they have been ripped off. I’ve seen a picture of one item which might or might not be the expansion link (part of) or the Union link. The rest??

Since we’re running into the Cross this seems a good time to say thank you to the A1 ST and the rest of the crew for as good a trip as possible.

 

My post wasn't directed at you Mike, it was aimed at the bo****ks coming from Brighton!

 

Sorry, I assumed you had read #342, you may as well go there...

 

TWR12 Theory time

Perhaps the middle valve seized and the combination lever broke as the weakest link

 

A very sad day.

The parts in the 4 foot appear to me to be part of the drop link off the crosshead (note part of), the union link, and the bottom section of the combination lever - another 'part of'.

In a piston valve loco there is not a great deal of strain on the combination lever with Walschaerts valve gear, and any strain is concentrated around the top end of the combination lever. The leverage action of the combination lever ought not to produce a break where it appears to have occurred, judging by the parts in the 4 ft. The footage of Tornado at the platform shows that the remainder of the combination lever is intact.

However, the bottom end of the combination lever is more vulnerable (due to the leverage effect) if something has caused the top half not to move as it should, or sieze up.

Just my twopennyworth.

Cheers,

Julian

 

Here's a better request to the mods. Can we lock this thread down as no one knows what happened and pages and pages of pointless speculation is just that. We've some gone from hitting something on the track to having most of the centre valve gear ripped out and no doubt there will be some even more unlikely theories aired.

Any machinery with moving parts will occasionally have some of those parts fail and something failed today, excrement happens! We've all and our cars breakdown and in the days when I used to regularly travel by train I've been on a few that have come to shuddering halt. Tornado gave a good demonstration of what it is capable of today so just let the A1 Trust get on with the job of getting it back in service. We will all find out what really happened when they have investigated it.

 

Hmmm.

The don’t be rude about Tornado brigade out in force this evening

 

Hi Toni, didn’t take it that way and suspect our views are not far apart. It’s been a long, mostly 75 mph day with a pleasant walk around York. Sadly, like many others, that wasn’t what I signed up for, nor paid for SWMBO and I to dine together. Hope some sanity returns and thanks to the mods for adding a little control when obviously necessary. I’m concerned at how long the facts may take to emerge - and I mean why it happened as well as what happened. Mike

 

My request was removed so I wish you luck John, I personally get very tired of the doom and gloom prospects for steam on the mainline from a handful of so called "enthusiasts".
As has happened before this thread will doubtless get out of hand and serve no purpose what so ever other than making NP a laughing stock.

 

Don't be ridiculous.

 

I noticed that the original mentions of the incident said that Tornado had hit something which had caused the damage. I was a bit dubious whether that would cause damage where it did, but did I miss something? Guessing the collision theory has pretty much been ruled out now?


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Think that is now correct Dan