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Steam & Excursion > 844 under steam today


Date: 04/11/07 12:57
844 under steam today
Author: WW

844 has been puttering around the Cheyenne yard today. It appears they are doing some "load testing" with it, using UP Centennial 6936 (with dynamic brakes) as a test "load." As of right after lunch, it appeared that they were finished. Don't know if there are any other things planned while 844 is "hot."



Date: 04/11/07 14:32
Re: 844 under steam today
Author: john1082

No doubt some whistle blowing will ensue. Or has 'progress' taken away fun like that, too?



Date: 04/11/07 20:08
Re: 844 under steam today
Author: Doug

WW Wrote:
-------------------------------------------------------
> 844 has been puttering around the Cheyenne yard
> today. It appears they are doing some "load
> testing" with it, using UP Centennial 6936 (with
> dynamic brakes) as a test "load." As of right
> after lunch, it appeared that they were finished.
> Don't know if there are any other things planned
> while 844 is "hot."

How do you define "puttering" around the yard? I thought dynamic brakes, particularly on older locomotives like the 6936, didn't work below about 15 miles an hour.



Date: 04/12/07 10:48
Re: 844 under steam today
Author: WW

When I saw it at lunch yesterday, 844 was running about 20-25 mph with 6936 in full dynamic. Yes, there was whistling, too.



Date: 04/12/07 11:40
Re: 844 under steam today
Author: southern_steam_nut

So how much of a load does dynamic braking equate to???? And we need video as well :))))))



Date: 04/12/07 14:55
Re: 844 under steam today
Author: Bob3985

Gentlemen;
They recently retrammed the running gear and were probably using 6936 to put a load on the engine to test out how well the loco got trammed.
Bob K.

Bob Krieger
Cheyenne, WY



Date: 04/12/07 15:22
Please explain "retrammed"
Author: Doug

Bob3985 Wrote:
-------------------------------------------------------
> Gentlemen;
> They recently retrammed the running gear and
> were probably using 6936 to put a load on the
> engine to test out how well the loco got trammed.
> Bob K.

Explain please -- what does "retrammed" mean?



Date: 04/12/07 18:45
Re: Please explain "retrammed"
Author: Bob3985

Tramming a locomotive is like a wheel alignment on a vehicle. They are squaring up the boxes that hold the wheel axles.

Bob Krieger
Cheyenne, WY



Date: 04/12/07 23:16
Re: Please explain "retrammed"
Author: ProAmtrak

Can't wait to hear when she'll be steamin' again, I'd love to see her in action!



Date: 04/13/07 09:17
Minimum Speed for 6936's dynamics?
Author: prr4828

At what speed would 6936's dynamics cut out? Do all axles provide retarding force in dynmic?

Thanks,

* JB *


WW Wrote:
-------------------------------------------------------
> When I saw it at lunch yesterday, 844 was running
> about 20-25 mph with 6936 in full dynamic. Yes,
> there was whistling, too.



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