--Zak Gardner
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QUOTE: Originally posted by chad thomas Eric, Once again I have to dissagree with you today. I'm not trying offend you I hope you know.[;)] I thought the position of the air intakes was to pull cooler air off the lower position. I was set straight by none other then our own Mark Hemphill. He pointed out that the turbulance inside a tunnel would mix the exhaust and cool air enough that intake height would make no differance. The tunnel motors bigest advantage was it's recovery time once outside that tunnel. It could recover from any overheating much faster then a standard SD40-2 could.
QUOTE: Originally posted by chad thomas Eric, To tell you the truth I belive the intakes do help by drawing in lower, cooler air but I have had several qualified people (includeing Mark) tell me otherwise. I find what you say about the elephant ears on the SD45 interesting. Can you describe them? I am visualiseing an enclosed shroud extending down the body to the walkway. Is that right?
Best Regards, Big John
Kiva Valley Railway- Freelanced road in central Arizona. Visit the link to see my MR forum thread on The Building of the Whitton Branch on the Kiva Valley Railway
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Building the CPR Kootenay division in N scale, blog here: http://kootenaymodelrailway.wordpress.com/
QUOTE: Originally posted by edbenton Redrabbit the reason the tunnel motors are still in use basically they are 40 or 45-2's under the hood and so everyone knows what to expect. I for one would not want to have one being ex-SP. In the early 90's when they were getting all those rebuilt GP40's they stated flat out in the contracts not a one could be ex SP SSW or Rio Grande. That tells you what SP mainatnce policy was like.
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