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Motor Power Table

NAR power table
NAR
Letter
Type
Typical
OD
Inches
Maximum
Newton-
Seconds
Maximum
Pound-
Seconds
micro0.250.31250.07
1/4A0.490.6250.14
1/2A0.491.250.28
A0.492.50.56
B0.49
0.69
5.01.12
C0.49
0.69
0.93
102.25
D0.69
0.93
204.5
E0.69
0.93
1.125
409
F0.93
1.125
8018
Over 18 years old
NAR
Letter
Type
Typical
OD
Inches
Maximum
Newton-
Seconds
Maximum
Pound-
Seconds
G0.93
1.125
16036
H0.93
1.125
1.5
32072
under 125g FAA exempt
240H model rocket
NAR
Letter
Type
Typical
OD
Inches
Maximum
Newton-
Seconds
Maximum
Pound-
Seconds
I1.125
1.5
2.125
640144
J1.125
1.5
2.125
1280288
K1.5
2.125
2.5
2.98
2560576
L2.125
2.5
2.98
3.875
51201152
M2.125
2.5
2.98
3.875
102402300
N2.98
3.875
6
204804600
O3.875
6
409609200
<= O defined consumer HPR power
>O is amateur or commercial rockets
NAR
Letter
Type
Typical
OD
Inches
Maximum
Newton-
Seconds
Maximum
Pound-
Seconds
P6"
12"
82K18.4K
Q6"
12"
164K36.8K
R12"
24"
328K73.6K
S12"
24"
656K147.2K
T12"
24"
1.31M294.4K
U24"
48"
2.62M590K
V24"
48"
5.25M1.08M
W48"
96"
10.5M2.16M
X48"
96"
21M4.32M
Y48"
96"
42M8.64M
Z96"
192"
84M17.28M
The "letter system" is Base 26
NAR
Letter
Type
Typical
OD
Inches
Maximum
Newton-
Seconds
Maximum
Pound-
Seconds
AA96"
192"
168M34.54M
AB192"
384"
336M69.08M
K=000 M=000000 T=000000000

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