While sitting at Uni for the first time in what seamed like months the action was pretty slow and uneventful until CP292 started out of Shoreham and I caught sight of these two units,


The MPEX 244 is a MP21B Demo unit and the only one out on the rails


The other RPRX 5407 is RP20BD one of 6 currently roaming the country, I was able to track these two units to CP's Alyth yard in Calgary but do not know where they are heading from here, kinda neat and sure made the day worth while.

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Milwaukee Road Matt

seen them tonight when I was leaving work they were in newport when I passed them

Matt was that you with the kid? I was the conductor.

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Will
CP Superior, WI

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Milwaukee Road Matt

Nice Catch!

Isnt the M21B a hybrid?

you know, batteries and 2 or 3 smaller prime movers?

and that begs another question:

Would they still be called prime movers?

No not a Hybrid, but a multi engine genset prototype. It spent the past few months testing on the CP along with the RPRX unit, Below are the specs for the MP21B, I dont think you could get away with calling an "electric" locomotives traction motors prime movers

MP21B Multi-Engine
Horsepower 2,100 (700 bhp x 3)
Engine Cummins QSK-19 (Tier 3 nonroad)
Traction motors D77 / D78
Maximum speed (nominal) 50 mph
Continuous tractive effort 55,000 lbs
Starting tractive effort 85,000 lbs
Weight (nominal) 275,000 lbs
Length 59' 2"
Height Plate C / Plate L
Fuel capacity 2,500 gal
Alternators 1800 rpm constant speed
Air compressor Electric driven rotary screw
Dynamic brake Optional
Locomotive control Q-Tron QES-III microprocessor

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Milwaukee Road Matt