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I have installed a number of the ernst kits , mostly in the old metal sideframe trucks. The only inside bearing trucks I did were a couple of SD40-2s. <br /> If gear noise bothers you Find another alternitive such as a replacement motor with a lower RPM. <br /> If your ok with a little gear noise, follow the instructions included, they are pretty straight forward and easy to follow. The only thing I do extra on the outside bearing trucks is to add shims to reduce the endplay of the wheelsets. <br /> I realy liked the difference as far as slow speed running capability and less current draw . <br /> If you add a little extra weight to the loco there won't be much that will compare in pulling power.
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