Motor Guide Results
Here is your handy guide to the motors that might work with your rocket.
We found 61 motors that fit and appear to have enough thrust
(739 motors didn't fit, 2 motors failed safety checks).
63 motor had thrust curves available and 114 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: 

Liberty 4 
Owner: 
John O'Connor 
Body Diameter: 
3.90in 
Dry Weight: 
5.20lb 
MMT Diameter: 
54.0mm 
MMT Length: 
13.00in 
C_{D}: 
0.60 
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 I140 
6.44lb 
51ft/s 
331ft/s 
4.6G 
1,672ft 
10.8s 
8s 

AeroTech I215 
6.36lb 
71ft/s 
378ft/s 
8.2G 
1,740ft 
10.4s 
9s 

AeroTech I170 
6.36lb 
61ft/s 
365ft/s 
6.4G 
1,773ft 
10.7s 
8s 

AeroTech I599 
6.33lb 
129ft/s 
444ft/s 
26.3G 
1,827ft 
9.9s 
9s 

AeroTech I229 
6.33lb 
70ft/s 
401ft/s 
8.8G 
1,850ft 
10.6s 
9s 

Cesaroni I150 
6.46lb 
55ft/s 
381ft/s 
5.1G 
2,084ft 
11.8s 
9s 

Cesaroni I445 
6.47lb 
98ft/s 
489ft/s 
17.5G 
2,175ft 
10.9s 
10s 

Cesaroni I120 
6.57lb 
50ft/s 
366ft/s 
4.0G 
2,243ft 
12.6s 
8s 

Cesaroni I218 
6.48lb 
69ft/s 
445ft/s 
8.2G 
2,248ft 
11.6s 
9s 

Cesaroni I165 
6.51lb 
58ft/s 
419ft/s 
5.5G 
2,362ft 
12.3s 
9s 

Cesaroni I100 
6.98lb 
65ft/s 
352ft/s 
8.8G 
2,841ft 
14.1s 
5s 

AeroTech I65 
6.86lb 
56ft/s 
364ft/s 
5.4G 
3,041ft 
14.9s 
6s 

Cesaroni J250 
7.03lb 
62ft/s 
566ft/s 
7.8G 
3,067ft 
13.2s 
10s 

AeroTech J250 
7.20lb 
66ft/s 
572ft/s 
8.5G 
3,151ft 
13.3s 
11s 

AeroTech J90 
7.08lb 
49ft/s 
415ft/s 
4.7G 
3,163ft 
14.7s 
7s 

Cesaroni J280 
7.30lb 
69ft/s 
597ft/s 
8.8G 
3,169ft 
13.3s 
11s 

Cesaroni J145 
7.05lb 
68ft/s 
452ft/s 
14.5G 
3,202ft 
13.9s 
9s 

AeroTech J250 
6.76lb 
79ft/s 
569ft/s 
10.2G 
3,257ft 
13.2s 
10s 

Cesaroni J1055 
6.90lb 
149ft/s 
755ft/s 
36.3G 
3,273ft 
12.4s 
12s 

AeroTech J315 
7.08lb 
80ft/s 
621ft/s 
11.0G 
3,382ft 
13.4s 
11s 

AeroTech J180 
6.98lb 
76ft/s 
545ft/s 
9.5G 
3,632ft 
14.1s 
9s 

Gorilla J365 
7.85lb 
66ft/s 
680ft/s 
13.3G 
3,637ft 
13.9s 
12s 

Cesaroni J240 
7.13lb 
68ft/s 
619ft/s 
8.2G 
3,640ft 
14.1s 
11s 

Cesaroni J430 
6.96lb 
96ft/s 
727ft/s 
15.9G 
3,655ft 
13.4s 
11s 

AeroTech J1299 
7.04lb 
162ft/s 
854ft/s 
46.5G 
3,662ft 
12.8s 
12s 

AeroTech J460 
6.94lb 
102ft/s 
739ft/s 
16.9G 
3,727ft 
13.4s 
11s 

AeroTech J275 
7.11lb 
72ft/s 
620ft/s 
9.5G 
3,732ft 
14.1s 
10s 

Cesaroni J293 
7.05lb 
73ft/s 
668ft/s 
10.3G 
3,737ft 
14.0s 
11s 

Cesaroni J244 
7.21lb 
64ft/s 
639ft/s 
7.2G 
3,812ft 
14.5s 
11s 

Cesaroni J210 
7.06lb 
69ft/s 
570ft/s 
9.4G 
3,845ft 
14.8s 
11s 

AMW J1365 
7.67lb 
157ft/s 
866ft/s 
45.3G 
3,867ft 
13.2s 
13s 

AMW J400 
8.25lb 
77ft/s 
732ft/s 
11.9G 
4,006ft 
14.3s 
12s 

Loki J350 
7.98lb 
75ft/s 
732ft/s 
11.8G 
4,060ft 
14.4s 
12s 

Gorilla J167 
7.88lb 
72ft/s 
527ft/s 
9.6G 
4,176ft 
15.6s 
10s 

AMW J475 
8.31lb 
86ft/s 
787ft/s 
15.8G 
4,178ft 
14.3s 
12s 

AeroTech J1799 
7.65lb 
184ft/s 
1,017ft/s 
62.7G 
4,256ft 
13.4s 
13s 

Cesaroni J360 
7.63lb 
76ft/s 
774ft/s 
14.9G 
4,293ft 
14.6s 
12s 

Cesaroni J1520 
7.46lb 
168ft/s 
1,030ft/s 
50.3G 
4,311ft 
13.5s 
13s 

Gorilla J465 
7.81lb 
85ft/s 
821ft/s 
17.8G 
4,313ft 
14.4s 
12s 

Cesaroni J380 
8.05lb 
76ft/s 
792ft/s 
10.8G 
4,320ft 
14.7s 
12s 

Gorilla J395 
7.76lb 
79ft/s 
794ft/s 
12.3G 
4,358ft 
14.7s 
12s 

Gorilla J485 
7.82lb 
87ft/s 
851ft/s 
15.6G 
4,452ft 
14.5s 
12s 

AMW J395 
8.00lb 
87ft/s 
784ft/s 
12.3G 
4,482ft 
14.9s 
12s 

Gorilla J535 
7.90lb 
108ft/s 
880ft/s 
18.3G 
4,503ft 
14.4s 
12s 

Loki J820 
7.87lb 
134ft/s 
941ft/s 
28.8G 
4,514ft 
14.0s 
13s 

AMW J440 
7.91lb 
116ft/s 
840ft/s 
21.9G 
4,525ft 
14.4s 
12s 

Loki J525 
7.93lb 
99ft/s 
891ft/s 
17.4G 
4,539ft 
14.5s 
13s 

AMW J325 
7.91lb 
89ft/s 
723ft/s 
14.4G 
4,575ft 
15.1s 
12s 

AeroTech J540 
7.59lb 
107ft/s 
905ft/s 
19.1G 
4,635ft 
14.4s 
12s 

AeroTech J401 
7.21lb 
91ft/s 
864ft/s 
14.0G 
4,680ft 
14.7s 
12s 

AMW J745 
7.89lb 
118ft/s 
973ft/s 
24.0G 
4,772ft 
14.5s 
13s 

Cesaroni J355 
7.79lb 
84ft/s 
820ft/s 
11.6G 
4,895ft 
15.3s 
12s 

AeroTech J800 
7.59lb 
130ft/s 
1,017ft/s 
27.1G 
4,937ft 
14.5s 
13s 

Loki J175 
7.96lb 
77ft/s 
626ft/s 
10.9G 
4,980ft 
16.4s 
10s 

Cesaroni J760 
7.57lb 
122ft/s 
1,056ft/s 
25.7G 
4,991ft 
14.5s 
13s 

Loki J300 
8.10lb 
80ft/s 
759ft/s 
10.2G 
5,022ft 
15.9s 
12s 

Cesaroni J295 
7.67lb 
85ft/s 
764ft/s 
11.9G 
5,031ft 
15.7s 
12s 

AeroTech J415 
7.78lb 
89ft/s 
887ft/s 
14.6G 
5,082ft 
15.2s 
12s 

Cesaroni J449 
7.67lb 
92ft/s 
937ft/s 
15.5G 
5,098ft 
15.2s 
12s 

Cesaroni K360 
7.92lb 
79ft/s 
878ft/s 
10.2G 
5,215ft 
15.7s 
12s 

Cesaroni J140 
8.02lb 
54ft/s 
567ft/s 
5.1G 
5,322ft 
18.2s 
9s 
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 10ft (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.)
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).
