XW-XY 9 INCH DIFF WIDTH/ LENGTH
HOUSING 1378MM OR 54.25 INCHES FLANGE TO FLANGE
DRUM TO DRUM 1524MM OR 60 INCHES
XA-XB-XC 9 INCH DIFF WIDTH/ LENGTH
HOUSING 1416MM OR 55.75 INCHES FLANGE TO FLANGE
DRUM TO DRUM 1562MM OR 61.5 INCHES
TOTAL LENGTH IS 38MM DIFFERENCE BETWEEN HOUSINGS IF YOU WANT TO SHORTEN TO XW-XY LENGTH FROM XA-XC HOUSING
DRUM BRAKES ARE 146MM OR 5.75 INCHES EXTRA TO HOUSING OR
73MM OR 2.87 INCHES PER DRUM
THESE ARE THE CORRECT MEASUREMENTS