Spectrum GP-30 w/ DCC on board

[Mouse]

Mr. Bachmann, I've got a noisy GP-30. Using DCC, the engine makes a almost buzzing sound, but if I remove the shell, all is quiet. I've tried to brace the shell in spots, but can't seem to remove the noise. Any suggestions?

[Yampa Bob]

Here is an article by Jim Banner regarding the noise.

http://www.bachmanntrains.com/home-usa/board/index.php/topic,1268.0.html

In the above thread, there is a link to an original discussion about noisy shells.

[Jim Banner]

Thanks, Bob.  Frankly, you amaze me.  You can remember, and even find, things that I have posted long after I have forgotten that I ever wrote them!

[Yampa Bob]

When I read your original thread, I imbedded a picture of you holding a needle in your teeth, playing a phonograph record.  Try this, type "Phonograph Needle" in the search box.   

Anyone can improve their memory with a simple tool called "Mnemonics".  The latest buzz word is "Synergy". 

http://en.wikipedia.org/wiki/Mnemonic

At my age, I need all the help I can get. 

Now, to reaffirm what Jim wrote earlier, I had a noisy GP40, growled like an alley cat in heat.  Removing the shell, I found the orange and gray wires laying across the motor case.  The wires feed from the center of circuit board, down through a hole.  There was enough slack to pull the wires down through a little and reposition them in a space between the motor case and casting.  I added short pieces of thin tape to keep the wires in place.

After replacing the shell, the noise was gone. There is still a slight buzzing at slow speed, but I attribute this to the lower pulse frequency as mentioned by Jim in the first thread by Ten Wheeler.