Athearn Roundhouse - 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.
Athearn RTR





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

Steam Locomotives

#28, #58
or
#118, #119, #158

Old Time 2-6-0 Mogul, Old Time 2-8-0 Consolidation, Old Time 4-4-0

Diesel locomotives

#28, #58
or
#118, #119, #158

EMD CF7 GP40X GP60M/B SD38 SD39 SD40 SD40-2 SD40T-2 SD45 SD45T-2 SD50 SD60 SW1000 Switcher SW1500 Switcher F59PHI Passenger

Freight Cars

#28, #58
or
#118, #119, #158

Automobile Carriers Auto Max Boxcars 40' Double Door Express Modern Outside Braced All Steel Single Door Variants Superior Door Youngstown Door 50' ACF Combo Door Express Evans Double Plug Door FMC 5347 Railbox FMC Combo Door FMC Centered Double Door FMC Offset Double Door FMC Plug Door NACC PS 5277 PS 5344 FGE Superior Door FGE Youngstown Door Single Sheath 60' Berwick FMC Gunderson ICC Covered Hoppers ACF 2970 FMC 4700 PS 4740 PS2 2600 PS2 2893 Trinity 3 Bay Flat Cars 40' Derrick 60' Flat 60' Bulkhead 85' Gondolas 52' Mill 65'6" Mill Bathtub Bethgon Coalporter Thrall Intermodal 56' Well Maxi I Well Maxi III Well Husky Stack Well 57' Trinity Spine Car Hoppers (open) 26' Ore 40' 3 Bay Rib Side 3 Bay Offset Side Ballast Wood Chip 50' 5-Bay Rapid Discharge Perishable Service 40' Pfaudler Milk Car Pickle Car 50' Ice 57' PC&F R-70-20 Mechanical Maintenance of Way Derrick Car 250-Ton Crane with Tender Rotary Snow Plow Tank Cars 62' 8,000 Gallon 30' NACC 16,000 Gallon Clay Slurry 20,900 Gallon RTC 30,000 Gallon Ethanol

Passenger Cars

#28, #58
or
#118, #119, #158

Bombardier Coach Cab-Coach 34' Overton Baggage Coach Observationr Railway Post Office (RPO) Passenger Set 50' Overland Baggage Coach Observation Railway Post Office (RPO) Passenger Set 60' Arch Roof Baggage Coach Diner Combine Observationr Railway Post Office (RPO) 70' Standard Business Coach Combine Railway Post Office (RPO) 85' Palace Sleeper Diner Combine Observation

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.

Cart