Massoth 8157001 Reverse Loop Kit for DCC/MTS/DC NIB

Massoth 8157001 Reverse Loop Kit for DCC/MTS or Analog Power NIB

New and Unused In original package from the #1 Massoth Dealer in the USA

Made in Germany by Massoth Elektronik GMBH.

Comes with all items for automatic control of one or more reverse loops

Price: $130.08 New

Description:

Operate your reversing loop without any short term short circuits and extend the life span of your DCC components and locomotives considerably. No more burnt wheels! Operate multiple reversing loops at the same time with this one kit.

The DiMAX Reverse Loop Module is a high performance unit which is able to handle digital track currents up to 15 AMPS without causing any short circuits. Conventional units cause short term - short circuits when the train enters the loop to trigger a change in the polarity of the track voltage. The DiMAX Reverse Loop Module avoids just that by eliminating the deliberate overload of the Digital Central Station of other units.

The DiMAX Reverse Loop Module extends the life span of all your railroad components. The DiMAX Reverse Loop Module works with all NMRA/DCC compatible digital systems and depending on the voltage used, handles up to 15 Amps. Current consumption like this can easily be reached with multiple motored G-Scale locomotives or consists of multiple locomotives.

The DiMAX Reverse Loop Module may be used in the regular short circuit mode if desired. The set includes 8 insulated track connectors and 4 sensing track units..

Features:

• 3 Year Warranty
• Avoids Short Circuit Arcing!
• Easy install
• Works with DCC, MTS or Analog Power
• Totally automated loop control
• Operates multiple loops
• Optionally operates in short circuit (arcing) mode when desired

Included Kit items:

• Reverse Loop Module
• 4 Massoth insulated track connectors with barriers/nuts & bolts/electrical connectors
• 4 Diodes for sensing rails
• 4 Brass rail sections for arc free sensing of trains
• Detailed Instructions

Overview: What is a reversing loop? How do they work?

Reversing loops and wye junctions inescapably produce a short circuit at the entry or exit points. Therefore
these arrangements require to be electrically isolated at the entry and exit points. To facilitate a reversing
loop operation a module is required to take care of the polarization of the loop section.

It is essential, that the isolated track section is longer than the longest train on the layout with cars that are
equipped with power pick-ups or metal wheels. In case only cars with plastic wheels are used, the maximum length of the loop section may be reduced to the length of the longest locomotive on the layout.

In case cars with metal wheels or wheels with a power pick-up are used, the length of the loop must
accommodate the whole train. Each metal wheel bridges the disconnecting points when passing. Bridging
both the disconnecting points at the entry point and the exit point at the same time will result in a short
circuit condition that even the reverse loop module is unable to handle.

Most modules available on the model railroad market work with a short circuit detection. A train entering the
reverse loop shorts the track power which is detected by a module. This module subsequently changes the
polarity of the isolated loop thus resolving the short circuit condition as the train continues.

This method has several drawbacks. The burn-off on the wheels and the track at the disconnecting points is
extensive due to the recurring shorts. In case multiple reversing loops are operated on the same power
supply all modules detect a short and subsequently switch the polarity at the same time. So only one train
at a time is allowed in a reversing loop. The remaining reversing loops cannot be used at the same time.

Easy Install:

Option 1. Hook up diagram using the included brass sensor tracks for totally arc free operation.

Use the included diodes at the sensor inputs for improved operation in this mode of operation. Note that that the plug is closed for this mode of operation.

 

Option 2: Hook up diagram using LGB or Shourt Line TC-17100K tracks contacts and LGB or Massoth 8420102 loco magnets for totally arc free operation.

This mode requires the reverse loop section to be completely isolated from the main layout at the entry and exit points. Hook up the module according to the wiring diagram. The Shourt Line TC-17100K track contact kit is an economic alternative to the LGB 17100 which is no longer available. Please see our other auction for track contacts and loco magnets. Note that that the plug is closed for this mode of operation.

 

Option 3: Hook up diagram for reverse loops with short circuit detection

This mode requires the reverse loop section to be completely isolated from the main layout at the entry and exit points. Hook up the module according to the wiring diagram. Please note that this operation results in a higher burn off at the wheels and the tracks. Note that that the plug is open for this mode of operation.

 

Wye Track Installation: Hook up diagram for digital wye junction installation with sensor tracks

To view the Massoth user guide click here

Photos:

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