TrainViation
Member
Allegedly, GBRf have the contract again for the sleeper, and are looking to order special 99s for the service. This is bad news for all Class 73 lovers…
Here’s a post I seen about the announcement.I imagine they would require ETS fitment and a speed increase.
The speed increase would probably be a drawn-out process, in terms of certification.

I think there are portable RETB units aren't there? So not a fitment per se.I’ve also realised that these 99s will have to be fitted with RETB to be able to run on the West Highland Line for the Fort William portion of the sleeper
RETB fitment is easy enough. It's the braking capability that will need some work for that line, bringing a sleeper smoothly down from County March into Fort William is no mean feat, even at 40mph max.Here’s a post I seen about the announcement. View attachment 212724
I’ve also realised that these 99s will have to be fitted with RETB to be able to run on the West Highland Line for the Fort William portion of the sleeper, and also special clearances may be needed too.
They will be new batch with ETS from the factory. The transformer is already sized to be able to provide ETS.I imagine they would require ETS fitment and a speed increase.
The speed increase would probably be a drawn-out process, in terms of certification.
The 92s may well be quite iconic and interesting to see, but to be honest they are not particularly reliable and that is a key to service such as this.I’d be very sorry to see the end of the 92s.
Having been refurbished specifically for this purpose, I think it would be a crying shame to see them replaced by 99s.
Fingers crossed this doesn’t happen.
I believe that some of the 99s will be fitted with ETS.I imagine they would require ETS fitment and a speed increase.
The speed increase would probably be a drawn-out process, in terms of certification.
I have been assuming that subclass as well.Cue the 99/4 series......
But being bi-modes presumably the good thing about 99s is they can stay on the front part of the train for the whole journey, with additional locos coming in for the other portions as now. As more of Scotland is electrified they can also use wires for more of the journey going forward.I’d be very sorry to see the end of the 92s.
Having been refurbished specifically for this purpose, I think it would be a crying shame to see them replaced by 99s.
Fingers crossed this doesn’t happen.
More than enough surely?I believe that some of the 99s will be fitted with ETS.
The maximum speed of a 99 is 75 mph (120km/h) but can be raised to 100 mph.
Mark 5s may be cleared for 110 mph....but, having ridden over the bogie in one of them from Euston to Edinburgh at 87 mph maximum, I don't think I would want to do it at any higher speed than that!Mk5s are cleared for 110mph so would make sense to have the locos able to the same.
The 92s being limited to 87mph causes issues when they are out of path.
100mph would be good, 110mph better - even if timings remain the same.
I’d be very sorry to see the end of the 92s.
Having been refurbished specifically for this purpose, I think it would be a crying shame to see them replaced by 99s.
Fingers crossed this doesn’t happen.
I can't imagine the flakes having worse brakes than a 66, especially given the former has rheostatic braking, something the sheds do not.RETB fitment is easy enough. It's the braking capability that will need some work for that line, bringing a sleeper smoothly down from County March into Fort William is no mean feat, even at 40mph max.
Yes, the only reason the 31/37/47 ETH versions were /4 was a coincidence in that it was the next sub-class available for each of those classes (standard 31s numbered up to 31327, 37s numbered up to 37308, 47s numbered up to 47381).We might have had 31/4, 37/4 and 47/4, but we also had 45/1 and 27/2 as ETH sub-classes.
99101 onwards would make more sense.