Interesting - why is the 745/3 "for fun"?
Indeed. What, I wonder, are the environmental credentials of such an over-powered unit? I seem to recall a steam loco designed for use from Liverpool Street on suburban workings which was called the 'Decapod' (0-10-0 wheel arrangement) which did 0-30mph in around 30 seconds in, I think, the 1920s. The GE, it seems, goes in for this sort of thing!
I imagine that with an alumnium body - fewer bogies modern traction electronics, LED lighting etc..the 755 is as 'green' as you are going to get. A 70 second burst of 2600Kw power gets a 755 from rest to 100mph..compared to the previous traction with 'only' 945kw needing around 5 minutes to achieve the same speed. Needless to say - no nasty diesel emissions being spewed out either in electric mode.
Yes - although I was really thinking of fixed formations/units.Sometime around 1990 I saw a pair of 31/1s roll into Exeter Central with ‘Annie and Clarabelle’ (the remaining two mk1 BSKs from the Exeter scratch set) on a local working to Honiton.
I worked it out as about 2940hp for a total weight of 290(ish) tons including the locos.
Surely one of the few times that class 31s were considered overpowered for the duty they were performing?
Yeah I know. It just popped into my mind sorry Deepgreen.
No, it's fine. I've also just recalled an occasion, about three years ago I think, where a singe HST power car was used to carry about 8 or so passengers (in Devon?) - I can't remember the details. There - I've taken myself somewhat off-topic!Yeah I know. It just popped into my mind sorry Deepgreen.
what a noise though!!Sometime around 1990 I saw a pair of 31/1s roll into Exeter Central with ‘Annie and Clarabelle’ (the remaining two mk1 BSKs from the Exeter scratch set) on a local working to Honiton.
I worked it out as about 2940hp for a total weight of 290(ish) tons including the locos.
Surely one of the few times that class 31s were considered overpowered for the duty they were performing?
Cornwall... That was on the Newquay branch after a derailment. Well remembered though.
Do you mean these?Sometime around 1990 I saw a pair of 31/1s roll into Exeter Central with ‘Annie and Clarabelle’ (the remaining two mk1 BSKs from the Exeter scratch set) on a local working to Honiton.
I worked it out as about 2940hp for a total weight of 290(ish) tons including the locos.
Surely one of the few times that class 31s were considered overpowered for the duty they were performing?
Have had a Taurus on load 3 - lets say 8000hp (think it's around 8500hp in reality) and probably total mass of 200 tonnes so 40hp/tonne. This easily hit 60mph in under 30 seconds (was around 25 seconds) - definitely know as train screen had a real time speedo on it. As for diesel have had 3 Eurorunners on load 2 all powering - possibly around 6000hp+ at rail on total mass of about 240 tonnes so at least 25hp/tonne, pretty quick off the mark!
68s - A bit more complicated than that as a fair chunk of that 400kW apparently lost can be used for ETS if needed. i.e. it is even more efficient than that!
I know you are referring specifically to the Class 800's and 802's. But not the Anglia Class 755's.
I imagine they wanted to keep it consistent with the 755/4's, for maintenance reasons, and perhaps to future-proof for expansion?
That's it! Thanks.
I think that's 'Meridian'?
