Description BT Size (OD) BT Length NC Length Scale
T-2+ (MicroMaxx) 0.281 3.82 1.15 0.21
TT T-3 0.375 5.09 1.53 0.28
TT T-4 0.448 6.09 1.83 0.34
BT-5 0.544 7.39 2.22 0.41
BT-20 0.736 10.00 3.00 0.56
Rogue T-22 0.85 11.55 3.46 0.64
T-.908 (ST-8) 0.908 12.34 3.70 0.69
BT-50 0.976 13.26 3.98 0.74
29mm motor tube 1.21 16.44 4.93 0.91
BT-55 1.325 18.00 5.40 1.00
BT-56 1.3 17.66 5.30 0.98
BT-60 1.637 22.24 6.67 1.24
Rogue T-45 1.75 23.77 7.13 1.32
Aerotech 1.9 1.88 25.54 7.66 1.42
T-2.04 (ST-20) 2.04 27.71 8.31 1.54
BT-70 2.217 30.12 9.04 1.67
54mm motor tube 2.26 30.70 9.21 1.71
BT-80 2.6 35.32 10.60 1.96
3" LOC/PML 3.1 42.11 12.63 2.34
4" LOC/PML 4 54.34 16.30 3.02
T-4.476 4.546 61.76 18.53 3.43
5.54" LOC 5.54 75.26 22.58 4.18
6.15" PML 6.155 83.62 25.08 4.65
7.67" PML 7.672 104.22 31.27 5.79
11.6" PML 11.66 158.40 47.52 8.80

The body tube data, format and original idea for this table taken w/o permission from A bigger and smaller Der Red Max
RogerBanks