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Saturday, March 12, 2022

How to open a BB 27000 or BB 37000 from Mehano

 

Here's the video:




I finally got around to create this video on opening a BB 27000 or BB 37000 from Mehano. I followed the instructions to take the engine apart:
  1. Remove the 4 buffers
  2. Remove the 2 couplers
  3. Remove the 2 "chasse-pierres"
  4. Remove 2 small parts in the center of the engine
  5. Spread the sides of the body to separate it from the chassis


One thing to add is about putting the model back together. There are two holes on each side of the body which is where the decoder holder under the chassis should go back:






Digitization of the Traxx HLE 2901 from Piko

 

I worked on this engine over a few week period at the end of January and never got to writing this post. I initially thought I'd use a Piko sound module, but a short test showed that it is for a diesel engine, not an electric one. Ultimately, I reversed back to using one ESU sound decoder with a ESU sound project.


Running analog







Opening the model

As usual with Piko, the manual is very clear about how to open the engine: one screw!



Here's how it looks:






Using an incorrect sound module

As you can see in the first picture, the sound module is for diesel engines, so not for this Traxx electric model ...







And now with an ESU sound decoder

I'm now using ESU ref 58420:



This is a blank sound decoder, so I need to load the ESU sound project:

http://projects.esu.eu/


I adjusted the announcements to use the French ones:


Now, it is a matter of loading the sound files and configuring the ECoS Command Station:






And with everything together now: