I was sent this photo which shows a CP rail Locomotive that I and brother, were recently pulled out of retirement to do, to fit electric/dynamic braking system in order for Loco to traverse the Canadian Rocky's.
Supplements the air brakes.
Nice to see it in action used now just for tourist/passenger market.
https://www.railpictures.net/viewphoto.php?id=651274

 

The site insist that I disable my adblocker to see the photo. Pass.

Hope you had a nice time working on the choo-choo.

 

 

During my MIllwright apprenticeship back in the mid 70's, I maintained a fleet of diesel/electric pushers and rolling cranes. Brake shoes were a common replacement item, as well as wire rope and clutch bands. I miss the physicality of those early years.

 

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During my MIllwright apprenticeship back in the mid 70's, I maintained a fleet of diesel/electric pushers and rolling cranes. Brake shoes were a common replacement item, as well as wire rope and clutch bands. I miss the physicality of those early years.

What Prov. were you apprenticed in?

 

to fit electric/dynamic braking system in order for Loco to traverse the Canadian Rocky's.

Sounds like an interesting job.
So it increases locomotive efficiency some, while reducing wear/replacement of the mechanical brakes.
So the locomotive motors to do the dynamic braking?
I assume there are some added batteries to store the braking energy(?).

 

It was interesting, I had not done any work on a Locomotive at that point, it was by brother who had been a RR technician was offered the job and talked me into joining him on it.
The locomotives came from the flat lands of central US, and only had pneumatic braking, CPR purchased them for use through the Rockies so they required dynamic brakes also.
For obvious safety issues !
There were no extra battery storage required, but the huge bank of braking resistors mounted in the roof of the unit were missing and had to be installed.
You can see the rows of fans mounted in the roof of the unit in order to cool the braking resistors that glow if high braking is required.

 

What Prov. were you apprenticed in?

Alberta. Millwright apprentice in Edmonton/area, Electrical apprentice in Calgary/area. Red Seal both. Worked for a number of years in the Vancouver area supervising trades. Currently retired on the Island, poking around to see what technical trouble I can find to get involved with.

Road Via from Vancouver to Edmonton once. Never again.

 

Sounds like an interesting job.
So it increases locomotive efficiency some, while reducing wear/replacement of the mechanical brakes.
So the locomotive motors to do the dynamic braking?
I assume there are some added batteries to store the braking energy(?).

My understanding is the "dynamic" braking uses the motors to extract energy from the train, but that it is not captured for reuse, but rather dumped as heat in large resistor banks, often position along the roof of the locomotive with large fans to blow air past them. If they capture the energy for reuse, then that is terms "regenerative" braking.