QUOTE: Originally posted by barbarosa http://www.utahrails.net/webpubs/up-dda40x.htm This link will take you to a lot of info on the DDA40X Centennials.Enjoy,Don
QUOTE: Originally posted by drailed1999 The main problem the UP found with their DD35's & DD40AX's was their frames were cracking in the center. Thats why they had such a short life span.
QUOTE: Originally posted by eolafan QUOTE: Originally posted by drailed1999 The main problem the UP found with their DD35's & DD40AX's was their frames were cracking in the center. Thats why they had such a short life span. These monsters lasted in service from 1969 until the mid 1980's, and I have seen other models that did not last that long, so why are we condemming this model for it's so called short life span? I don't think it was terribly and abnormally short at all for a primarily mainline high speed loco. Jim
QUOTE: Originally posted by jhhtrainsplanes Salutations, Alex lol still trying to play forum tag. [8D] [:D] [:p]
QUOTE: Originally posted by drailed1999 The DD40AX was also known as the 6600HP track straightener. The Santa Fe banned them from their San Bernadino yard cause it straightened out all the switches it went thru.
Larry Resident Microferroequinologist (at least at my house) Everyone goes home; Safety begins with you My Opinion. Standard Disclaimers Apply. No Expiration Date Come ride the rails with me! There's one thing about humility - the moment you think you've got it, you've lost it...
QUOTE: Originally posted by mudchicken Reading Coal: Tree68 is right, the steam engines bad blind drivers and the inside diesel axles on the D truck do not. There is only so much lateral motion allowed on the D-Truck with an axle. It's the length of the truck as opposed to the length of the unit that is an issue here. (DD40AX's had a huge coupler swing)...The yards in San Bdno ("A" yard/depot and "B" yard)were all #8 and #6-1/2 turnouts (9 degree 31 minutes or sharper), suspect that those rascal would not turn well on any curve over 6 degrees. Hardly an urban myth. Any roadmaster worth his salt would be concerned to see something that big (248 tons)wandering around in the light duty backtracks...the same goes for the bigger steam engines. Amtrak and Santa Fe guys had trouble with new GE dash-8 locos with restricted coupler swing straight out of the factory (not worn and not lubricated)...they tore up a healthy number of 6-1/2 turnouts in yards system wide until they got worn in and lubricated. Usually they "rolled over" the outside curved rail between the switch points and the frog, yanking spikes right out of good ties.....the lateral force on the rail just would get beyond what the spike and tie could be expected to hold. -mudchicken
She who has no signature! cinscocom-tmw
Have fun with your trains
QUOTE: Originally posted by vsmith There is a DD40 on display at the L.A. County Fairgrounds in Pomona, Ca.,
QUOTE: Originally posted by Mookie QUOTE: Originally posted by mudchicken Feather Duster - bet this would be really interesting if I had a clue what you just said! Moo
QUOTE: Originally posted by mudchicken
QUOTE: Originally posted by mudchicken QUOTE: Originally posted by Mookie QUOTE: Originally posted by mudchicken Feather Duster - bet this would be really interesting if I had a clue what you just said! Moo [:D] Welcome to a mudchicken's world Ms. Mookie! radius? - we don't need no stinkin' radius to railroad here! Chord definition rules! The highway guyz can keep that darned arc definition! Frog numbering is nothing more than a unit triangle, a way of determining the frog angle/deflection angle. (Ignore the hypoteneuse, the short side =1 and the long side = the frog size number) I'll quit while I'm ahead. It was fun watching a cat's eyes glaze over though! Close your books. Open mind! Pop quiz! Dirty Bird[^]
QUOTE: Originally posted by tree68 Many of the long-wheelbase steam locos had "blind drivers" - drivers with no flanges, specifically for that reason.
Dave H. Painted side goes up. My website : wnbranch.com
QUOTE: Originally posted by TARGUBRIGHT You would think Union Pacific had learned from the Big Boy failure, "Bigger is not better". I am surprised the SD90mac's are not seeing some of these problems. TIM A
QUOTE: Originally posted by mudchicken Pop quiz maybe not so good an option about now? Save the claws and teef for some smaller critter (sans beak & talons) that deserves the rath of mookie. I'd like to get thru Nebraska undamaged next week! MC
QUOTE: Originally posted by Bat21 Gentlemen, In not wanting to upset anyone on here with regards to the accuracy of Information concerning the DDA40X. As a hobby growing up 1974-82, I started riding rear loco's of U.P. freights between Las Vegas Nevada, Yermo Calif, East Los Angeles and back. I've rode in all 3 monsters, U50C's, DD35's and the 40X. They rode like giant cadillac's and climbed Cima hill and Cajon Pass with ease....P.S....I did get caught a few times.............
23 17 46 11
QUOTE: Originally posted by Mookie MISSOURI LIVES!
QUOTE: Originally posted by Bat21 Hello All....."I'm back"...I just wanted to apoligize to each and every one of you for my past undesirable comments. And to you Mr Blysard, I owe a sincere apoligy sir and hope we can shake hands and get on to better and more meaningful subjects.
QUOTE: Originally posted by edblysard Hi Blue, When we see them in a trailing unit, and its a bum, or a realitive of Mr Cellphone, we leave them be, call the gumshoes, and make arangements for them to meet us at a certain crossing, and we stop the train where they are waiting, guys on each side of the locomotives. Havent had one fight yet, they go pretty quitely. If its a kid, joyriding, we usually go get them, bring them into the cab, chew their butt up and down for a while. The we put then off at the next crossing with warnings that next time we call the cops. Havent had a repeater. In the yard, if we see them in a car, we keep on switching till we get down to that car, then drag it up in front of the tower, where we have the gumshoes waiting. Because we are a switching road, we really dont have main line per se, but we get our share of these dummies. We did have a pair of real hobos get on a leading unit that was dragging a switch cut out, demanding to know where "this train is going" They picked the wrong train, our engineer then was a ex Louisiana State fullback, and, after they ignored his request to get off the locomotive, he really and truly threw them off, while it was running about ten mph. Just picked them up and chunked them over the railing. Along with you, I would like to hear how wasbash would deal with them on a long distance run, out in the middle of the boonies! Stay Frosty, Ed
QUOTE: Originally posted by jhhtrainsplanes Years ago I worked for Rail Bearing Service here in North Little Rock. We remaned many bearings for MOPAC/UP. On Saturdays if we didn't work I had to go in and check the equipment and such. There was a big field next to the shop and right behind us was the railroad yard. I usually tried to take Sasha (my first Doberman) and let her play in the big field. She loved to run and I could trust her to come when called. She was an excellent dog and knew how to behave. She ran across this guy laying down in the big field. So I went over and let him know she was a good dog and he was ok. We began to talk and I found out he was a hobo. All he had with him was a bedroll and a few small things he could carry in a small sack. He told me he had been doing that for years and usually didn't have any problems. He was headed to Texas. He had been up north. I never saw him again after that and have always wondered about him. When I was little we had a hobo knock on a neighbors's door and ask for food. It really scared her and she called over to our house so we could keep an eye out for him and make sure she was ok too. I don't remember much more than that about it. I guess there are more around than we can imagine. It might be fun for a little while but not for long. Sorry, I need a roof over my head and food in my mouth. I don't think Duchess would care much for it either. She is too spoiled already. It would worry my mother sick so I guess I will keep my job and house and stay right here. [:)] [;)]
Pump
QUOTE: Originally posted by UPTRAIN The 6936 is the only operating one today...at 98 feet long it's like a diesel Big Boy...I ran it once back last February on a UP inspection train....ALL HAIL THE POWER!!!!!!! *(Tim Allen Growl)*
QUOTE: Originally posted by TARGUBRIGHT From what I understand the DD40X was some what of a failure,( twice the power, twice the failures). They drank alot of fuel and something was alway's broke on them. Probably why they never lasted very long. TIM A
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