Recent content by Richard Scott

Assume these were series-parallel 47s as all parallel had ammeters up to nearly 10kA? 1792015261 Current will depend on how motors are wired, series-parallel locos will have a lower current rating than all parallel locos in the main. Also main generator output voltage will vary across classes...

Thanks for info.

Why not? Thought modern locos with disc brakes etc were no longer on that restriction?

The 1750hp rating was for reliability purposes. Additionally, EE had offered to uprate the later built 40s to 2400hp (assume with same turbos as the 205 units) but BR declined to ensure reliability. Certainly would have made the 40s a much better passenger loco giving a 45 a run for its money?

Just Borgo San Lorenzo now, think a few turns in morning and evening.

Which is what I said, highest efficiency will occur at different speeds.

No it won't, your limit is efficiency of the transmission equipment, which will be no different with whatever gearing you have. All it will do is shift the speed at which maximum efficiency occurs.

It's a different use, move a heavy load more slowly or a lighter load more quickly. Depends what you want to do. Either way you still are only using what you have.

Initially you would get more power at rail at lower speeds compared to installed horsepower but it will level out at a lower speed so whilst it seems you're getting something for nothing you're not. Bit like leaving a car in a lower gear, it will accelerate more quickly but you'll use more fuel...

Not necessarily as it would accelerate more quickly. Power is an instantaneous reading of work done i.e. energy transferred per second (so what the machine can do every second) so not sure what you're getting at with last statement? Utilising a machine for more time increases the energy...

My local school definitely does, markets them as pre-loved!

It is, was there in March. If lucky will get 3 different locos in a day as the one that arrives from Swan Hill around midday gets swapped for the evening return. My luck kicked in and loco produced but stock declared a failure so train cancelled in the evening!

Remember 08805 being at New Street in 1989, it was used to rescue 47836, which had collapsed near Proof House Junction.

Gloucestershire Warwickshire back to steam today.

Ok, sorry, misunderstood.