Bachmann Online Forum

Discussion Boards => General Discussion => Topic started by: Derek on August 11, 2015, 09:44:17 PM

Title: Bachman Turntable
Post by: Derek on August 11, 2015, 09:44:17 PM
Hello,  I have also just bought and installed a Bachmann turntable, which I am really enjoying.
I have left the factory-fitted decoder in it and am using the supplied switch to move the turntable.
My layout is DCC.
However, I notice that, when the turntable is turning, and is between the in/out tracks, there is no power to the turntable track, so the lights and sound on the loco go off until it reaches the next in/out track.
Is it designed like this?
Would it be different if I put a DCC decoder into it?

Many thanks,

Derek
Title: Re: Bachman Turntable
Post by: Mdaskalos on August 13, 2015, 12:56:11 PM
I would have to think this is by design, and would be related to polarity. If you rotate the turntable 180° with turntable track power maintained, then you have opposite poles connect, kind of like you've made a reverse loop short "on the fly".

And depending on how many tracks the turntable serves, and their polarity, you could make a short at far less rotation than 180°

So, I would think that for this reason, that turntable tracks would of necessity be powered by the tracks with which they are presently aligned, and not be wired for power directly.

Title: Re: Bachman Turntable
Post by: Derek on August 13, 2015, 02:37:39 PM
That makes sense, many thanks,

Derek