What is the top speed of the new Genset Locomotives? I know they are switchers, but can they be use as road switchers as 40 mph in between switching locations?
GS
That would depend upon how they are geared. It does appear that they are being used for transfers, industry jobs and local freights in addition to straight yard duty.
LAJ What is the top speed of the new Genset Locomotives? I know they are switchers, but can they be use as road switchers as 40 mph in between switching locations? GS
Many Genset units are built reusing frames and other components from retired EMD roadswitchers(GP38s, GP40s, ect.). I assume that in most cases they have the same gearing that the "donor" units did...
"I Often Dream of Trains"-From the Album of the Same Name by Robyn Hitchcock
Going up hill or downhill ?
Randy Stahl Going up hill or downhill ?
Now, now....
The "TRACTIVE EFFORT VS SPEED" diagram on Page 6 of 22 of this Power Point presentation from Feb. 2006 by National Railway Equipment Co. has the speed graphed as high as 70 MPH . . . so draw your own conclusions.
http://www.northeastdiesel.org/pdf/low-emissions-switcher-012206.pdf
I couldn't quickly find anything similar on the Progress Rail webpage for its gensets.
- Paul North.
I see red lines....
EMD D77 traction motors with standard 62:15 gearing have a nominal maximum rotational speed of about 71 mph. Spinning faster under a heavy load will soften the copper windings and the centrifical force may cause 'bird nesting' - grounded traction motor when the windings touch the motor case. I suspect that most modern engines have a limiter in the controls to prevent over-speed.
Jim
Modeling BNSF and Milwaukee Road in SW Wisconsin
Thanks, Jim - Those parameters correspond with what's shown on the chart on Page 6 of 22 of the Power Point PDF that I linked above, with 40'' diam. wheels.
LAJ What is the top speed of the new Genset Locomotives? GS
What is the top speed of the new Genset Locomotives?
As fast as a running non-genset engine can shove it into the shop for repair.
Mike WSOR engineer | HO scale since 1988 | Visit our club www.WCGandyDancers.com
I have seen several photo's lately of Canadian Pacific's two gensets being used as power on manifest and intermodal Trains sometimes as the leading Locomotive.
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