Waiting for a new post. Please standby. Thanks. http://www.rrpicturearchives.net/pictures%5C3812%5C4821_close_cabine_carreira_comprida_14maio2005.jpg Please make a post in this thread. Thanks. [ December 23, 2005, 07:56 AM: Message edited by: sapacif ]
Thanks sapacif. This old DRGW unit is impressive with these huge trucks! Now, look at this: http://www.rrpicturearchives.net/showPicture.aspx?id=107832 Pedro: Edit this email and you can see how I posted the picture: http://www.rrpicturearchives.net/pictures%5C3812%5Cddm_850_cau_21set1997.jpg [ December 23, 2005, 07:57 AM: Message edited by: sapacif ]
You upload the url to your computer, then right-click on the image. One of the options is "Copy Image Location." Use that and past it between the letters. It is like "image' and "close image." You can try it on the International Forum.
Sorry, I clue the same link. This one, please. http://www.rrpicturearchives.net/showPicture.aspx?id=107832 http://www.rrpicturearchives.net/pictures%5C3812%5Cddm_850_cau_21set1997.jpg [ December 23, 2005, 07:58 AM: Message edited by: sapacif ]
I posted that one. See your post above that has two pictures in it now. I edited your post. Scroll up.
Here I was thinking all sorts of things about a "Brazil Engine" and blending in thoughts of Mardis Gras. Oh, well.
Pedro can tell you for sure. I understand it is to distribute weight. There are fewer tons per axle with eight axles on a big engine like that. Most of this is standard guage, but there are narrow guage diesels like this, too. Looks like there would be more traction, too?
Man, that site does some strange stuff with firefox...Kinda resizes the whole window....Weird! Probably one of my individual settings...
There's a java script on those pages which resizes the window to a maximum width of 931 pixels. Running a higher horizontal resolution than 931 will cause the smaller window to open. Disabling your window resizing java script permission in Firefox (under options/content/enable javascript [advanced tab]/move/resize window) will open the link in a full-sized window, though not centred. The locomotives, though.... what a strange looking group with those funky 3'6" B-B arrangements and mega porches at each end. Easy to model the bodies but those trucks? [ December 21, 2005, 05:32 AM: Message edited by: Gats ]
Thats wild,I 'd heard of these units,first time I've seen them. Gary,3' 6" you say,how about 4x z scale GP 35 trucks under a n scale SD40-2 lol. Dont let John Widmar see this thread hehe.
In theory, it would not reduce the pulling power because of having the same weight on the rails with an extra axle on each truck for another co-efficient of friction applied to the rail. But there are other problems. Two extra traction motors with the same horse power? Actually, I don't know if all the axles are powered? I just don't know how it affects traction.
Z scale trucks may just do it with a lot of modification to the sideframes (or just plain replaced). That should give the closer to proto wheel diameter, which look to be in the sub-30" range. Of course the major hurdle will be powering them without them jumping the tracks...
The reason of BB+BB and D-D trucks on EFVM and FCA locomotives is simple: these are meter gauge railroads that uses standard gauge locomotives. The original standard gauge traction motors do not fit inside meter gauge trucks. So, to get the same horsepower of original C40-9, C40-8, B36-7, SD40-2 or SD45, GE and GM use smaller traction motors but increase them in number. So, with eight small traction motors, we can have a Dash 9W running on meter gauge with the same performance of a standard gauge one. In fact, the test shows the BB40-9w is a bit better then a C40-9W, because it has more adhesion on rails. Another company starts to use BB+BB trucks here. It is ALL rwy, in the soulth. It is rebuilding C36-7 to BB33M. These locos uses old meter gauge traction motors from retired brazilian diesels, thats why they do not get the original 3,600 hp of C36-7. But ALL is happy with them, because they have good and powerful locos for a low price.
