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Discussion Boards => HO => Topic started by: a17dl on July 04, 2020, 11:34:33 AM

Title: Reverse loops
Post by: a17dl on July 04, 2020, 11:34:33 AM
Using Bachmann EZ track and have two reverse loops. Plan on using  both DCC and DC for the layout switching between them. Would the Bachmann auto reversing track work with both systems or would I need separate power to each reverse loop area for DC. I am new  this DCC concept and could use some guidance.
Title: Re: Reverse loops
Post by: rich1998 on July 04, 2020, 11:59:06 AM
All I have heard is auto reversers will not work with DC. You need a DPDT switch for a reverse loop. DCC has the code to make the reverser work.

Rich
Title: Re: Reverse loops
Post by: a17dl on July 04, 2020, 12:17:19 PM
thank you
Title: Re: Reverse loops
Post by: rich1998 on July 04, 2020, 12:29:33 PM
When our club switched to DCC a number of years ago, we had a reverse loop and fourteen blocks, four throttles. we thought of some DC and DCC in some blocks and the reverse loop. Did not work plus we toasted the five amp booster by running a couple locos from a DC block into a DCC block. No more DC. Our DC throttles were good for 2.5 amps, hand built. HO layout.

Rich
Title: Re: Reverse loops
Post by: a17dl on July 04, 2020, 12:53:17 PM
. Looks like I should just stick with making my layout DCC only
Title: Re: Reverse loops
Post by: rich1998 on July 04, 2020, 03:42:39 PM
Good choice unless you have a good understanding of the difference between DC and DCC.

Rich
Title: Re: Reverse loops
Post by: Trainman203 on July 04, 2020, 05:49:04 PM
Yes keep them separate. 
Title: Re: Reverse loops
Post by: rich1998 on July 04, 2020, 08:39:37 PM
Oh, more details. If your layout comes close on one side and decide to put in a crossover, that is a short reverse loop and requires a reverser. Our club layout on DC ran one direction and was lke that.
When we went to DCC, we realized we could put in a crossover.

Rich
Title: Re: Reverse loops
Post by: jward on July 05, 2020, 11:41:24 PM
Do your reverse loops each have just one switch you use to enter and exit the reversing section? If so, you can use an Atlas snap relay or other latching type circuit to operate the reverse loop. This will operate on both DC and DCC.

In reading your post it appears you have confused autoreversing track with an autoreverse unit. the Autoreversing track is designed for a point to point system like a streetcar that reverses direction at the end of its run. It is not suitable for use in reverse loops. The autoreverse unit, which is wired between the Command station and the track, handles the reversing function by sensing a short circuit when trains enter or exit the loop, and instantaneously reversing polarity to that section to conform with the track the train is crossing to/from.