Motor Guide Results
Here is your handy guide to the motors that might work with your rocket.
We found 46 motors that fit and appear to have enough thrust
(731 motors didn't fit, 25 motors failed safety checks).
70 motor had thrust curves available and 141 flight simulations were performed.
Browse the motors that did and didn't work right here or download the results as a spreadsheet.
The Rocket
Rocket Name: 

SEVRA Rocket MkII 
Owner: 
Phill Ash 
Body Diameter: 
8.38in 
Dry Weight: 
56.72lb 
MMT Diameter: 
98.0mm 
MMT Length: 
49.00in 
C_{D}: 
0.50 
Motors That Work
These motors fit your rocket and appear to have enough thrust to lift it safely.
If thrust curves are available, a quick simulation has been run to give a rough idea
of the performance of your rocket on this motor.
We encourage you to run a more complete simulation with any motor you plan to use;
see the simulators page for more info.

Motor 
Weight 
Launch 
Velocity 
Accel 
Altitude 
Time 
Delay 

Cesaroni K1620 
63.50lb 
49ft/s 
231ft/s 
5.6G 
930ft 
8.2s 
7s 

AeroTech K1999 
63.31lb 
55ft/s 
250ft/s 
6.5G 
1,040ft 
8.5s 
7s 

AeroTech L2500 
67.72lb 
62ft/s 
443ft/s 
8.5G 
2,729ft 
13.3s 
11s 

Cesaroni L3150 
67.15lb 
69ft/s 
474ft/s 
11.3G 
2,924ft 
13.5s 
12s 

AeroTech M4500 
71.32lb 
83ft/s 
691ft/s 
16.9G 
4,951ft 
16.7s 
15s 

Cesaroni M2505 
70.50lb 
59ft/s 
650ft/s 
8.5G 
5,019ft 
17.5s 
15s 

Cesaroni M4770 
71.06lb 
81ft/s 
711ft/s 
17.6G 
5,042ft 
16.9s 
15s 

AeroTech M2100 
71.97lb 
56ft/s 
633ft/s 
8.4G 
5,149ft 
17.9s 
14s 

AeroTech M2400 
70.94lb 
59ft/s 
652ft/s 
7.7G 
5,172ft 
17.8s 
14s 

AeroTech M1800 
76.92lb 
48ft/s 
610ft/s 
7.4G 
5,255ft 
18.6s 
14s 

AeroTech M1845 
71.45lb 
54ft/s 
637ft/s 
6.7G 
5,508ft 
18.7s 
14s 

Cesaroni M6400 
74.18lb 
101ft/s 
814ft/s 
21.7G 
5,919ft 
17.8s 
16s 

AeroTech M2000 
76.53lb 
52ft/s 
697ft/s 
5.9G 
6,126ft 
19.7s 
15s 

AeroTech M2500 
74.50lb 
61ft/s 
769ft/s 
7.7G 
6,579ft 
19.7s 
15s 

AeroTech M6000 
75.37lb 
90ft/s 
880ft/s 
20.7G 
6,596ft 
18.7s 
17s 

Cesaroni M1890 
76.17lb 
49ft/s 
721ft/s 
5.7G 
6,705ft 
20.7s 
15s 

Cesaroni M1800 
75.11lb 
51ft/s 
720ft/s 
5.5G 
6,777ft 
20.7s 
15s 

Cesaroni M1450 
75.63lb 
54ft/s 
660ft/s 
6.2G 
6,784ft 
21.1s 
14s 

Cesaroni M3400 
74.60lb 
69ft/s 
855ft/s 
11.0G 
6,955ft 
19.7s 
17s 

Cesaroni N10000 
78.59lb 
123ft/s 
955ft/s 
33.7G 
6,971ft 
18.8s 
18s 

AeroTech N2220 
83.17lb 
56ft/s 
751ft/s 
7.0G 
7,005ft 
20.7s 
15s 

AeroTech M1939 
76.54lb 
49ft/s 
702ft/s 
5.5G 
7,037ft 
21.2s 
14s 

Cesaroni N1800 
76.96lb 
50ft/s 
726ft/s 
5.4G 
7,045ft 
21.2s 
15s 

Cesaroni N2600 
82.03lb 
56ft/s 
823ft/s 
7.3G 
7,344ft 
20.9s 
17s 

Gorilla N2717 
79.07lb 
56ft/s 
829ft/s 
11.0G 
7,412ft 
20.6s 
16s 

Cesaroni N2200 
81.76lb 
55ft/s 
826ft/s 
6.5G 
8,078ft 
22.1s 
16s 

Loki N3800 
82.29lb 
77ft/s 
953ft/s 
12.7G 
8,338ft 
21.1s 
18s 

AeroTech N2000 
83.80lb 
58ft/s 
822ft/s 
7.0G 
8,793ft 
23.0s 
15s 

Gorilla N1720 
90.72lb 
62ft/s 
769ft/s 
8.0G 
9,052ft 
23.5s 
15s 

Cesaroni N5600 
81.59lb 
89ft/s 
1,118ft/s 
17.4G 
9,101ft 
21.3s 
19s 

Cesaroni N2500 
82.44lb 
67ft/s 
920ft/s 
9.0G 
9,176ft 
22.7s 
17s 

Cesaroni N2850 
82.49lb 
63ft/s 
983ft/s 
8.1G 
9,264ft 
22.7s 
18s 

Cesaroni N3400 
87.52lb 
61ft/s 
1,021ft/s 
9.4G 
9,307ft 
22.6s 
18s 

AeroTech N3300 
83.29lb 
67ft/s 
1,015ft/s 
9.2G 
9,386ft 
22.6s 
18s 

AeroTech N1000 
84.88lb 
48ft/s 
648ft/s 
4.6G 
9,429ft 
26.6s 
10s 

Cesaroni N3180 
83.61lb 
65ft/s 
1,029ft/s 
9.3G 
9,514ft 
22.8s 
18s 

Cesaroni N1100 
82.27lb 
57ft/s 
687ft/s 
6.4G 
9,621ft 
25.6s 
13s 

Cesaroni N2501 
86.06lb 
62ft/s 
974ft/s 
8.1G 
10,106ft 
23.8s 
18s 

Cesaroni N1560 
91.68lb 
56ft/s 
807ft/s 
6.8G 
10,902ft 
26.3s 
15s 

Cesaroni N3800 
88.16lb 
74ft/s 
1,182ft/s 
11.2G 
11,240ft 
23.9s 
19s 

Cesaroni N4100 
89.23lb 
72ft/s 
1,241ft/s 
11.4G 
11,320ft 
23.9s 
20s 

Cesaroni N2540 
92.61lb 
54ft/s 
1,059ft/s 
6.1G 
11,465ft 
25.5s 
18s 

Cesaroni N2900 
87.95lb 
68ft/s 
1,100ft/s 
9.3G 
11,535ft 
24.8s 
19s 

Cesaroni N3301 
93.15lb 
69ft/s 
1,162ft/s 
11.0G 
12,007ft 
24.9s 
19s 

Cesaroni N5800 
89.41lb 
89ft/s 
1,420ft/s 
16.9G 
12,529ft 
24.0s 
20s 

Cesaroni O3400 
93.85lb 
72ft/s 
1,238ft/s 
10.1G 
12,902ft 
25.4s 
19s 
Don't like the units?
Login to set your preferences.
Don't understand the results? See the motor guide help page.
Motors That Fail
These motors fit your rocket, but failed one safety check or another.
They may actually work, but you should use them only with caution.
We encourage you to run a more complete simulation to verify flight safety;
see the simulators page for more info.
G These simulations were run with a launch guide length of 8ft (rod, rail or tower).
If this is not correct, launch guide lengths can be specified for your saved rockets.
(The minimum velocity required is approximately 15m/s or 50ft/s.)
5 The 5:1 thrusttoweight ratio check is a useful rule of thumb, but it does break down for motors with unusual thrust curves.
For example, motors with a high initial thrust and a long tailoff may fail this test but still be safe for use.
Download the Results
The data is presented in a compact form in the tables above, broken down by motors
that worked and those that did not. If you would like to analyze the data further,
this section provides download links for files in a generic spreadsheet format
(commaseparated value, or CSV) that can be opened with almost any spreadsheet program.
You should download these files to your machine and then open them.
Normally, clicking the link will prompt you to do this.
However, if your browser insists on opening the file as plain text,
you can rightclick (controlclick on the Mac) on the link and
chose Save File As (or similar).
