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Discussion Boards => HO => Topic started by: NKPR765 on December 13, 2025, 04:50:36 PM

Title: Bachmann F7 A&B 2012
Post by: NKPR765 on December 13, 2025, 04:50:36 PM
Hi I just bought this Locomotive and was looking for information on it.  It is a Bachmann F7 A-B 


The B unit has a DCC board AE32034 looks to be from 2012. The A unit has K110526 on it.  


First thing I should say is I don't know much about DCC. Is this Locomotive just DCC sound and moves with  a dc transformer or does it move with a dcc controller?


Can you run it on just DC? 

Where I bought it said the bell and horn need programed. Could you explain that process?  


Being that the A unit has a motor itself not being connected to the B unit dcc boad makes me think it's just a DC Locomotive. 


Thanks for the help. 

Title: Re: Bachmann F7 A&B 2012
Post by: NKPR765 on December 13, 2025, 09:09:01 PM
I did run it on DC. After so much throttle the B unit will start the sound. Then with more power the B unit will start moving. The A unit however runs at a faster rate than the B unit, and slips it's wheels more so at slow to medium throttle.

Will the A unit run at a closer rate to the B unit with DCC. Is that a common thing with these or adjustable?

Thanks
Title: Re: Bachmann F7 A&B 2012
Post by: Len on December 14, 2025, 04:23:48 AM
You have a straight DC 'A' unit and DCC 'B' unit.  The speed differance is due to the DCC board requiring at least 5 volts on the track before the loco starts moving, while the DC unit will be moving fairly fast at that voltage.

You need to install a AE32033 DCC board in the 'A' unit to make them both DCC capable:

https://estore.bachmanntrains.com/index.php?main_page=product_info&cPath=698&products_id=10488

While they look the same externally, the AE32033 board has light functions the AE32034 in the 'B' unit does not.

Len