91 tnt?

[dstrat]

Has this ever been tried? Would it even be feasible or would it overload the lines?

Cheers!
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CM185T

 

[MCR247]

Has this ever been tried? Would it even be feasible or would it overload the lines?

Cheers!

I believe they were trying something like when East coast hired a CrossCountry HST about 1 months ago. Not sure though

 

[37401]

I dont think its been T+T but there have been doubble headders on IEP test trains

 

[rail-britain]

I dont think its been T+T but there have been doubble headders on IEP test trains

All the ones I have seen, the "inside" loco has been panto down / switched off

 

[Aictos]

There were tests done last year between Grantham and Newark Northgate involving a Mk4 set being top and tailed with 2 91s.

The trials were a complete success as they were designed to see if the IEP could run in normal operation with both pans up.

I don't know much more then that other then what I was told by one of the test drivers.

I know the set ran ECS via Hertford from Bounds Green to the test site but for obvious reasons only using one pan to the test site.

So in answer to the Op, yes they have operated with both pans up before although only as parts of the tests - in normal operation, only one pan is used and if the loco is a failure then another 91 is used or the Thunderbird is used.

 

[142094]

Wasn't there some sort of discussion about this when the GNER train derailed at Selby when that Land Rover ended up on the tracks? I know it is a few years ago now, but there were stories in the press saying that the train wouldn't have derailed (or to a lesser extent) if the 91 had been at the front and not back, due to the difference in weight between a 91 and 82.

 

[mumrar]

I know it is a few years ago now, but there were stories in the press saying that the train wouldn't have derailed (or to a lesser extent) if the 91 had been at the front and not back

Most likely just stories, as is usually the case with the press. There was no specific research carried out after the disaster to determine if that was the case, so the usual press blowing smoke up everybodies ass again! Unsubstantiated rubbish, overheard third hand, and sounded good to an editor I guess.

 

[A60K]

Most likely just stories, as is usually the case with the press. There was no specific research carried out after the disaster to determine if that was the case, so the usual press blowing smoke up everybodies ass again! Unsubstantiated rubbish, overheard third hand, and sounded good to an editor I guess.

There was research carried out after the Polmont accident however, and a train will behave differently depending on circumstances and whether it is being hauled or propelled.

 

[142094]

Although tests would have to be done, it seems relatively straight forward that the comparative weight of a 91 vs. a 82 would have meant the train would have been less likely to have become derailed.

 

[royaloak]

Although tests would have to be done, it seems relatively straight forward that the comparative weight of a 91 vs. a 82 would have meant the train would have been less likely to have become derailed.

I dont understand the significance of the weight of one of these :roll:-
http://www.flickr.com/photos/martin_addison/4525548714/



Yes I know you are on about the DVT!

 

[LE Greys]

I always thought the problem with two electric locos at opposite ends was the rear pantograph losing contact with the wire. That's why APT had the power cars in the middle of the train, thus using one pan rather than two. TGVs tend to use one pan and a bus line along the entire train. Eurostars use two, but I think they sometimes have problems with the loss of contact. Still, it's a bit hard to see from outside.

 

[Crossforth]

Are the tests useful now anyway with the possobility of the IEP being scrapped altogether?

 

[asylumxl]

Are the tests useful now anyway with the possobility of the IEP being scrapped altogether?

It's been "postponed", which is different to being cancelled/scrapped. I believe Hitachi are still testing.

 

[Pumbaa]

Hopefully the "postponement" becomes "cancelled" and the entire thing consigned to the dustbin!

 

[starrymarkb]

A bit like NASA cancelling Constellation, waste of what has been spent so far (in NASA's case $10Billion) but better in the long run?

 

[Pumbaa]

Absolutely!

 

[Drsatan]

A bit like NASA cancelling Constellation, waste of what has been spent so far (in NASA's case $10Billion) but better in the long run?

Or even Crossrail, which the Tories 'support' but aren't committed to. I wouldn't be surprised if Crossrail was canned after the general election by a Tory government even though work's already started.

 

[dstrat]

Cheers for your answers all. I can only imagine the acceleration of the thing....maybe even a 395 beater! I was wondering as the Class 373s apparently had a problem on the ECML as the OHLE was not tightly sprung enough...but cheers
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