HST power cars on the Sleeper?

[D365]

Some HST power cars have had TDM fitted before (you can recognise them by the buffers below the head/tail lights ), I don't think it would be to hard to do it again.

As a matter of fact, GC will be rid of their 6 ex-DVT 43s by 2016, replacing the sets with further 180s from FGW and/or FHT. The other two which were used in formation with the then-new 91s have been adapted for NR's NMT.

 

[ainsworth74]

I think you're over playing the certainty there a bit.

 

[talltim]

The sleeper is supposed to be being lengthened so will definately getting past the limits of power cars.
I can't see them ever being used for freight for so many reasons

 

[HSTEd]

The sleeper is supposed to be being lengthened so will definately getting past the limits of power cars.
I can't see them ever being used for freight for so many reasons

Not really, since a power car has a generally comparable output to a 57.... (2250hp instead of 2500hp). So if its past the limit of the power cars then its probably past that of the Class 57s.

Now is having to be assisted on the devon banks a timing issue or will the train actually stall if it attempts it? Timing is not really a problem on the sleeper as it is during the day.

 

[Darandio]

Not really, since a power car has a generally comparable output to a 57.... (2250hp instead of 2500hp). So if its past the limit of the power cars then its probably past that of the Class 57s.

Output in horsepower is completely irrelevant there. Compare the tractive effort of the two, that is without talking about gearing.

 

[455driver]

Not really, since a power car has a generally comparable output to a 57.... (2250hp instead of 2500hp). So if its past the limit of the power cars then its probably past that of the Class 57s.

Why do you post about something which you clearly know nothing about!

If horsepower is the be all and end all why is a 66/6 a much stronger loco than a 66/5 after all they have the same horsepower?

Why is a 60 a much stronger loco than a 66/0 despite having 100hp less? The reason is the gearing and leaving that out of the equation is stupid.

 

[richw]

Why do you post about something which you clearly know nothing about!

If horsepower is the be all and end all why is a 66/6 a much stronger loco than a 66/5 after all they have the same horsepower?

Why is a 60 a much stronger loco than a 66/0 despite having 100hp less? The reason is the gearing and leaving that out of the equation is stupid.

Not only the gearing, but that is the main contributor, there will be numerous other factors.

I don't know a great deal about trains, so I wont use a comparison involving trains, but I know with cars the Torque makes a massive difference more so that horsepower, my 100bhp horsepower Turbo diesel, will out perform my 130bhp petrol car when towing or heavily loaded. I imagine there are similar factors with train engines as well.

 

[455driver]

Not only the gearing, but that is the main contributor, there will be numerous other factors.

I don't know a great deal about trains, so I wont use a comparison involving trains, but I know with cars the Torque makes a massive difference more so that horsepower, my 100bhp horsepower Turbo diesel, will out perform my 130bhp petrol car when towing or heavily loaded. I imagine there are similar factors with train engines as well.

Indeed plus the control of the wheelslip etc.

 

[button_boxer]

Sorry, I've had a mind blank, what's B&H again?

Berks & Hants? Whatever it's actually called the name refers to the more direct route between Taunton and Reading via Westbury.

 

[HSTEd]

Why do you post about something which you clearly know nothing about!

If horsepower is the be all and end all why is a 66/6 a much stronger loco than a 66/5 after all they have the same horsepower?

Why is a 60 a much stronger loco than a 66/0 despite having 100hp less? The reason is the gearing and leaving that out of the equation is stupid.

Oops, forgot that the Class 57 is a Co-Co... not a Bo-Bo
And probably also that the HSTs are now 40 years old and thus have no benefitted from the advancements in motor drive technology that have drastically reduced the importance of gearing.
The Cornish sleeper is not a particularily heavy train however.

So will the train actually stall or just crawl over the top of the bank at walking pace if it tries the bank with only one power car? The latter is not really an issue with the sleeper.

And it appears that the tractive efforts of two power cars approximately match that of the Class 57 so yeah, it is unlikely to get that the cars cannot pull the train