11-19-2015, 03:10 PM
Ok,
if you are going to work on an Athearn loco, I suggest have a read of this article, it will give you some additional tips etc to make the thing run better.
<!-- m --><a class="postlink" href="http://www.mcor-nmra.org/Publications/Articles/Athearn_TuneUp.php">http://www.mcor-nmra.org/Publications/A ... TuneUp.php</a><!-- m -->
There's more such pages is you surf around.
I've Done a similar conversion once with a GP38 locomotive.
Used a similar repowering kit. You might find issues fitting the flywheels etc onto the new motor shaft. I found that they were a little too loose fitting.
I solved that by carefully wrapping a little bit of electrical insulation tape on the motor shafts, adding a small drop of super glue, and then press the flywheels on.
The cradle I fitted with thin double sided tape, and the same for the motor to the cradle, that also works to isolate it from the frame, a must for DCC.
Some other generic tune ups can be found on youtube, for example this one. You don't have to do all of it, but it's just one other method.
<!-- m --><a class="postlink" href="https://www.youtube.com/watch?v=TFxTNI-HILc">https://www.youtube.com/watch?v=TFxTNI-HILc</a><!-- m -->
One remark, are you sure your SD40-2 is a 'bluebox', or is it a somewhat newer, but similar 'RTR' . The RTR can be recognised by plastic handrails, and it will also have 'normal' polished wheels. The older bluebook uses sintered wheels that are a bit grey in appearance, and will have metal wire handrails and stanchions. Other than that, the construction is similar to some of the RTD locomotives . (Newer RTR have even more enhancements under the hood).
Koos
if you are going to work on an Athearn loco, I suggest have a read of this article, it will give you some additional tips etc to make the thing run better.
<!-- m --><a class="postlink" href="http://www.mcor-nmra.org/Publications/Articles/Athearn_TuneUp.php">http://www.mcor-nmra.org/Publications/A ... TuneUp.php</a><!-- m -->
There's more such pages is you surf around.
I've Done a similar conversion once with a GP38 locomotive.
Used a similar repowering kit. You might find issues fitting the flywheels etc onto the new motor shaft. I found that they were a little too loose fitting.
I solved that by carefully wrapping a little bit of electrical insulation tape on the motor shafts, adding a small drop of super glue, and then press the flywheels on.
The cradle I fitted with thin double sided tape, and the same for the motor to the cradle, that also works to isolate it from the frame, a must for DCC.
Some other generic tune ups can be found on youtube, for example this one. You don't have to do all of it, but it's just one other method.
<!-- m --><a class="postlink" href="https://www.youtube.com/watch?v=TFxTNI-HILc">https://www.youtube.com/watch?v=TFxTNI-HILc</a><!-- m -->
One remark, are you sure your SD40-2 is a 'bluebox', or is it a somewhat newer, but similar 'RTR' . The RTR can be recognised by plastic handrails, and it will also have 'normal' polished wheels. The older bluebook uses sintered wheels that are a bit grey in appearance, and will have metal wire handrails and stanchions. Other than that, the construction is similar to some of the RTD locomotives . (Newer RTR have even more enhancements under the hood).
Koos
Be sure to visit my model railroad blog at <!-- m --><a class="postlink" href="http://www.namrr.blogspot.com">http://www.namrr.blogspot.com</a><!-- m -->