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Class 93 Tri-mode Loco

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RailUK Forums

Roast Veg

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All are ABB AMXL 400 (as 68 and 88). The model number denotes ASEA / Swedish / Vasteras heritage. The numbering system is based ASEA industrial drive numbering (AML series) with 1xx is >~250kW with increments of 250kW stepping up a hundred so 4xx demotes >= ~1MW

4FRA / 6FRA are models based on the Brown-Boveri Swiss (Zurich) / German (Mannheim) numbering e.g. 4 = 4pole, 6 = 6pole, FRA = Frame mounted rigid axle linkage, FIA = Frame mounted with Independent Axles linkage, FHA = FRA with additional height clearance, FXA = FRA with eXtra additional height clearance (e.g. for India). There is still significant linkage between Bombardier (now Alstom) locomotives and the Brown-Boveri Swiss /German heritage for example the Alstom/Bombardier Traxx MS3 and recent AC3 locomotives have 6FIA series motors.
Interesting, thank you. I have in my notes that the class 92 was fitted with 6FRA7059B traction motors, and the 68 is fitted with 4FRA6063 motors. I can't find the source, so I'm willing to be corrected.
 

Nottingham59

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In last night's test, I see that 6Q09 passed Tebay at 0035, apparently without stopping, and got to the summit just ten minutes later at 0045. It was pathed from Crewe to Carnforth as a diesel, then as an electric.


The timing load last night had been changed to 1800t, but the load for tonight is still currently set to 2000t.

 

ac6000cw

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It swapped modes at Preston where in made an unscheduled (according to the path) stop.
Crewe Coal Yard to Winsford took 14.25 minutes for 6.7 miles - 28.21mph pass to pass average (I assume accelerating as hard as it could on diesel+battery, on level or very gentle downgrades), then the 43 miles from Winsford to Preston South Junction took 46 minutes - 56mph pass to pass average on a gently undulating route.

So probably not bad for a roughly cl.37 equivalent.
 

Rail Quest

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It swapped modes at Preston where in made an unscheduled (according to the path) stop.
Crewe Coal Yard to Winsford took 14.25 minutes for 6.7 miles - 28.21mph pass to pass average (I assume accelerating as hard as it could on diesel+battery, on level or very gentle downgrades), then the 43 miles from Winsford to Preston South Junction took 46 minutes - 56mph pass to pass average on a gently undulating route.

So probably not bad for a roughly cl.37 equivalent.
Perhaps it therefore swapped early due to battery depletion. Diesel-only accelerating with 1800t in tow off the Preston speed limits must be painfully slow and would perhaps cause a delay.
 

Richard123

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Perhaps it therefore swapped early due to battery depletion. Diesel-only accelerating with 1800t in tow off the Preston speed limits must be painfully slow and would perhaps cause a delay.
6Q09 or 6Q42?

6Q09 gained time all the way Crewe to near Shap where it changed over as planned?

6Q42 south to Crewe climbed Shap in diesel and stayed in diesel and kept time throughout?

Previous day lost time at Eden (planned changeover).

Must be looking at different trains to you...
 

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