Hornby always fit the same profile bogie wheels to all their locos, for some they are near enough correct; for others they are downright awful!
The pattern seems to be in favour of Gresley but when that same pattern of wheel is fitted to Stanier locos; it looks altogether wrong. I notice that Hornby’s proposed new Princess Royal pacific, which although being fitted with correct profile driving wheels, seems to be suffering with the usual wrong bogie wheels; the Duchesses and Black Fives certainly do! Would it be possible to forward my attached pdf file to Hornby’s design team for their consideration?
Bachmann bogie wheels are usually better; in the past I’ve even transposed Hornby wheels for Bachmann….now that can’t be right!!!
Hornby incorrect bogie wheels.pdf