The Hornby TTS Decoder has been installed into my Vitrains EWS class 37.
As the decoder is already programmed to work with a five pole motor the operation is fine....That's if there's a five pole in the vitrains,if not, and there's a 3-pole,then that's a lucky coincidence.
An in-cased 4 ohm speaker enhances the sound dramatically, better than the un-cased Hornby 8 ohm but you need to keep the sound cv's at a low level.
If you don't mind removing the rear cab detail,the 28mm speaker sits very nicely on top of the rear drive block,with a little double sided tape, and the seaker will traverse with the turning of the bogey, after you have cut off the speaker retaining lugs.
The only problem I found was with the diractional lighting....the flashing light gremlins were back and for some reason, the lighting was in reverse.
So first, in Hornby's Cv guide it says that you can reverse the polarity. No matter what values I put into the setting, I could not get the Decoder to reverse it's polarity....maybe I'm doing something wrong and I'd appreciate help here.
Anyhow, there is a solution to the flashing lights, and that's if you change the speed value to 128...mentioned in an earlier post by another member.....this worked for me. However I have a Guagemaster prodigy and you can take forever turning that control nob or pressing the speed button and I'm used to 28 speed steps anyways.
I found that changing CV29 to 1 solved the flashing light problem and she still ran on 28 speed steps. Eventually I decided to simply solder the vitrains lighting circuit in reverse at each end of the chassis.
Now, unfortunately the Banana is noiseless and is looking at me very sorry for itself....the trouble is. this damned colour scheme is beginning to grow on me, so I may sell back my de-chipped 37 as a part exchange for a new TTS banana.
Cheers!