Need a little sand?

Not sure but I have seen a similar photo before and an engineer on that forum explained that the hand brakes, in some cases, can hold the wheels on the one truck locked solid.

True? Possibly, but I never ran across handbrakes overpowering a traction motor before.

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Must have been a tight handbrake on either axle numbers 1&2 or 2&3

 

It also is possible that the unit was on its way to a repair shop to replace its rear truck, and was added as helper duty thinking that 66% power was better than nothing. My guess is that unit may have been in worse shape than anyone realized since its DPU control apparently wasn't operating all that great either.

 

Not sure it is, here are my reasons

1. There are 3 spots in each rail where one of the trucks was at in the first photo where there are only 2 spots in each rail where one of the truck was at in the second photo.
2. In the first photo it appears that there is not any access along side the tracks as in the second photo.
   1. If is is the same location, the photos were taken from different directions (understandable) but in the second photo there is (for a lack of a better term) a road next to the tracks with the damage, where in the first photo there are leaves.

Gary

 

Hi Boxcab:

I have used this picture in several power points teaching railroaders over the years. As I recall, the situation was that the locomotive had one traction motor cut out for unknown reasons and the other three motors/axles continued to turn either while the movement was stopped or in the reverse direction. BTW it doesn't take long for this to happen as the rail is much "softer' than the wheels.

Barry

 

On 6 axle locomotives the traction motors always cutout in pairs on opposite trucks 1&4, 2&5, 3&6 etc..

 

The wheels on the diesel were most likely grooved. They put traction tires on it and never had a problem again ! ! !

Carl