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walthers EMD SW-1 diesel loco
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Rudy, <br />I've go two of these and find them to be excellent runners. However, you describe a problem that I once had with my first Walthers "Pup". It originally came equipped with a flexible rubber tube connecting the rear motor shaft to the rear power truck. After a while, the tubing became loose on the shaft and power transmission was lost to the rear truck. In effect, the front truck was trying to drag a locked rear truck. <br />Walthers had a fix in that they offered a free universal link to replace the rear tubing. I wrote them and they came through in good order with a part that was a good retrofit. The SW-1 has been a good runner ever since - and I have lots of running time on it. My second Pup never developed this problem, but I have not run it very much as I have not yet painted it for my home road. <br />Check to see what kind of linkage you have to that rear truck. If it's a tube, replace it. (Contact Walthers for a free replacement universal link) If you already have universals on both trucks, it sounds like one is loose on the motor shaft or the truck driveshaft. If that is the case, you could score the offending shaft or, with care, fix the slipping bushing with ACC. <br />I was under the impression that this was corrected on later production runs, but maybe there are still a few of the early ones still out there. You probably could use a universal link from Northwest Shortline or Grandt Line, also. <br />Once fixed, the unit runs and pulls well at prototypical switcher speeds (not a lot of high end speed), but it does have some gear noise. <br />I find it to be an excellent switcher. <br />Jim - Roseau, MN
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