12-21-2009, 02:44 PM
Ummm.
Didn't see this question the first time around.
I think that you need to look for wheels that fit the RP-25 profile.
Most modern wheel sets are made to the NMRA RP-25 profile, but older stuff may have "Pizza-Cutter" wheel flanges.
It's easy enough to change out wheel-sets on rolling stock, but locomotive wheels are more of a challenge.
What happens is that the wheel flange may be too deep and will bump along on the ties and spike heads.
and/or
The wheel flanges will lift the wheel tread up off the rails while going through turnouts and crossings because they are deeper than the flangeways.
Any time that the wheel flanges lift the wheels, you lose contact with the rails and the loco's will stall.
Also, there will be derailments through turnouts and crossings.
Didn't see this question the first time around.
I think that you need to look for wheels that fit the RP-25 profile.
Most modern wheel sets are made to the NMRA RP-25 profile, but older stuff may have "Pizza-Cutter" wheel flanges.
It's easy enough to change out wheel-sets on rolling stock, but locomotive wheels are more of a challenge.
What happens is that the wheel flange may be too deep and will bump along on the ties and spike heads.
and/or
The wheel flanges will lift the wheel tread up off the rails while going through turnouts and crossings because they are deeper than the flangeways.
Any time that the wheel flanges lift the wheels, you lose contact with the rails and the loco's will stall.
Also, there will be derailments through turnouts and crossings.
Ron Wm. Hurlbut
Toronto, Ontario, Dominion of Canada
Ontario Narrow Gauge Show
Humber Valley & Simcoe Railway Blog
Toronto, Ontario, Dominion of Canada
Ontario Narrow Gauge Show
Humber Valley & Simcoe Railway Blog