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AHM (Rivarossi) - HO Coupler Conversions



NOTE: Our conversions typically requiring the least modification to a model. The How To Instructions and Diagrams are based of the Standard Coupler; they will still be a good guide for the Whisker® & Other suggested coupler options. Always check the coupler heights with either our #205 or newer #206 Coupler Height Gauge.
AHM (Rivarossi)





Stop & Read This! Newer HO-Scale Models with Factory Knuckle Couplers will not be listed. They are easily converted by using our #148 or "scale" head #158 Whisker® Couplers.

**Note: Some manufacturers now produce models with non-industry standard coupler pockets. These shallower coupler pockets may require slight modification to the gearbox or coupler to function properly. If the model has a removable gearbox it can be replaced with a Kadee® gearbox. If the model has a molded-on gearbox, the coupler shank may be filed thinner to fit.

  Whisker® Metal Coupler Standard Coupler Other Coupler Options

0-4-0 Dockside (Early model)

0-4-0 Dockside (Early model) Conversion

 
#144 Pilot or #141 Rear
in a #252 Gearbox

0-4-0 Dockside (Late model)

0-4-0 Dockside (Late model) Conversion

 
#144 Pilot or #144 Rear
in a #252 Gearbox

0-4-0 Switcher w/Tender

0-4-0 Switcher w/Tender Conversion

 
#147
in a #252 Gearbox

0-8-0 Switcher

0-8-0 Switcher Conversion
#148 or #158 Pilot
in a #252 Gearbox

2-4-0 Bowker (Tender only)

2-4-0 Bowker (Tender only) Conversion
 
#144
in a #252 Gearbox

2-8-4 Berkshire

2-8-4 Berkshire Conversion
 
#144 Pilot
in a #252 Gearbox

2-10-2 Santa Fe Class

2-10-2 Santa Fe Class Conversion
 
#148 or #158
in a #252 Gearbox

2-8-8-2 USRA Mallet

2-8-8-2 USRA Mallet Conversion
 
#143
in a #252 Gearbox

4-4-0 Genoa or Reno (Tender only)

4-4-0 Genoa or Reno (Tender only) Conversion
 
#143 Pilot
in a #252 Gearbox

4-6-0 Casey Jones (Tender only)

4-6-0 Casey Jones (Tender only) Conversion
 
#147
in a #252 Gearbox

4-6-2 Heavy Pacific

4-6-2 Heavy Pacific Conversion
 
#143 Pilot
in a #252 Gearbox

4-6-4 J3a Hudson

4-6-4 J3a Hudson Conversion
 
4-6-6-4 Challenger
 
#143 Pilot
in a #252 Gearbox

4-8-8-2 Cab Forward (Early model)

4-8-8-2 Cab Forward (Early model) Conversion
 
#144
in a #252 Gearbox

4-8-8-2 Cab Forward (Late model)

 
#143 Pilot
in a #252 Gearbox

4-8-8-4 Big Boy

4-8-8-4 Big Boy Conversion
 
 

Heisler (2 & 3 truck)

 
#142
in a #252 Gearbox

Alco C424

 
#141
in a #252 Gearbox

Alco RS-2

Alco RS-2 Conversion
#28, #58
or
#118, #119, #158

EMD BL-2

EMD BL-2	 Conversion
#28, #58
or
#118, #119, #158

EMD E-8/9

EMD E-8/9 Conversion
 
 

EMD GP-18

EMD GP-18 Conversion
 
 

EMD SD-40

 
 

Fairbanks Morse ‘C’ Liner

Fairbanks Morse ‘C’ Liner Conversion
 
#144 Pilot or #147 Rear
in a #252 Gearbox

GE 1000

 
 

GE U25C

GE U25C Conversion
 
 

GG1

GG1 Conversion
 
#147
in a #252 Gearbox

Krauss/Maffi

Krauss/Maffi Conversion
#28, #58
or
#118, #119, #158

Plymouth MDT Switcher

Plymouth MDT Switcher Conversion
 
 

Whitcomb Switcher

Whitcomb Switcher Conversion
 
#148 or #158
in a #252 Gearbox

All Freight Cars - Talgo Trucks

All Freight Cars - Talgo Trucks Conversion
 
#147
in a #252 Gearbox

All Freight Cars - Body Mount

All Freight Cars - Body Mount Conversion
#28, #58
or
#118, #119, #158

Old Time Freight Cars

Old Time Freight Cars Conversion
#28, #58
or
#118, #119, #158

Old Time 4-Wheel Pass. Trucks

Old Time 4-Wheel Pass. Trucks Conversion
 
 

4-Wheel Pass. Trucks

4-Wheel Pass. Trucks Conversion
 
 

6-Wheel Pass. Trucks

6-Wheel Pass. Trucks Conversion
 
 

Tavern Lounge or Observation -
Truck Mount As Above -
Dummy Coupler End

 
#148 or #158
in a #252 Gearbox

4-Wheel European Passenger Cars

4-Wheel European Passenger Cars

 
 
#18

Anywhere a NO.5® is listed, the #28, #58 or #118, #119, #158, #148 Whisker Coupler can be used in its place.


*Our conversion’s based on only one model from a production run, there may be inconsistencies in a model’s production run that require a different coupler or model modifications to achieve the proper coupler height for coupler function.

** Metal Coupler Note: It is not recommended to use a metal coupler directly on a metal surface to avoid the possible electrical crossover or shorting that may cause damage.

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