From LGB's web site (in terms of diameter, not radius)
R1 = 1200 mm
R2 = 1560 mm
R3 = 2390 mm
R5 = 4640 mm
Tranlated into imperial:
R1 - 47.2" diameter (2' radius)
R2 - 61.4" dia (2' 6' rad)
R3 - 94.1" dia (3' 11" rad)
R5 - 182.7" dia (7' 7"rad)
Later,
K