i disagree ...
John Hart "Gnome & Rhone AX2" produced for Crusader is strictly 1/56 and it works with the riders .
( and the Perry bikes suffered , IMO, of dwarf wheels
)
1/48 produce oversized vehicles, 1/56 undersized ones mostly because of the "heroic" 28mm ... may be something around 1/52 or 1/53 ?