Motor Guide Results
Here is your handy guide to the motors that might work with your rocket.
We found 92 motors that fit and appear to have enough thrust
(686 motors didn't fit, 22 motors failed safety checks).
112 motor had thrust curves available and 224 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: 

Big Bad Burt 
Owner: 
Jim Lane 
Body Diameter: 
3.00in 
Dry Weight: 
28.0oz 
MMT Diameter: 
29.0mm 
MMT Length: 
16.00in 
C_{D}: 
0.70 
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 

AeroTech F62 
31.8oz 
55ft/s 
161ft/s 
6.2G 
407ft 
5.3s 
4s 

Cesaroni F120 
31.7oz 
85ft/s 
188ft/s 
15.3G 
447ft 
5.3s 
5s 

AeroTech F42 
30.7oz 
56ft/s 
161ft/s 
7.1G 
448ft 
5.5s 
4s 

Cesaroni F59 
31.5oz 
59ft/s 
175ft/s 
7.1G 
453ft 
5.5s 
5s 

AeroTech F67 
30.8oz 
66ft/s 
199ft/s 
9.1G 
534ft 
5.8s 
5s 

AeroTech F50 
31.0oz 
62ft/s 
205ft/s 
7.4G 
610ft 
6.3s 
5s 

AeroTech F25 
31.2oz 
51ft/s 
171ft/s 
5.7G 
611ft 
6.6s 
4s 

AeroTech F52 
32.3oz 
61ft/s 
205ft/s 
7.8G 
634ft 
6.4s 
5s 

AeroTech F40 
32.5oz 
56ft/s 
199ft/s 
6.5G 
683ft 
6.8s 
5s 
W 
Estes F50 
30.9oz 
63ft/s 
227ft/s 
8.1G 
716ft 
6.7s 
5s 

AeroTech G54 
32.8oz 
61ft/s 
225ft/s 
7.9G 
722ft 
6.8s 
5s 

Cesaroni G88 
33.4oz 
68ft/s 
255ft/s 
11.6G 
760ft 
6.8s 
6s 

AeroTech G104 
32.8oz 
79ft/s 
260ft/s 
12.4G 
787ft 
6.8s 
6s 

AeroTech G74 
31.1oz 
65ft/s 
269ft/s 
9.5G 
819ft 
7.0s 
6s 

AeroTech G53 
33.1oz 
64ft/s 
241ft/s 
8.4G 
849ft 
7.3s 
5s 

Cesaroni G80 
33.1oz 
64ft/s 
282ft/s 
9.7G 
887ft 
7.3s 
6s 
W 
Estes G40 
32.3oz 
57ft/s 
251ft/s 
7.1G 
953ft 
7.8s 
5s 

AeroTech G40 
32.3oz 
57ft/s 
251ft/s 
7.1G 
953ft 
7.8s 
5s 

AeroTech G77 
33.8oz 
59ft/s 
292ft/s 
8.5G 
956ft 
7.6s 
6s 

AeroTech G77 
32.3oz 
64ft/s 
307ft/s 
9.8G 
992ft 
7.6s 
6s 

AeroTech G79 
33.5oz 
67ft/s 
304ft/s 
9.6G 
1,023ft 
7.8s 
6s 

Cesaroni G83 
33.1oz 
68ft/s 
309ft/s 
9.9G 
1,030ft 
7.7s 
6s 

Cesaroni G68 
33.5oz 
60ft/s 
295ft/s 
8.9G 
1,033ft 
7.9s 
6s 

AeroTech G79 
32.4oz 
58ft/s 
299ft/s 
8.0G 
1,039ft 
7.9s 
6s 

Cesaroni G57 
33.1oz 
63ft/s 
282ft/s 
8.6G 
1,046ft 
8.0s 
6s 

Cesaroni G250 
33.0oz 
114ft/s 
367ft/s 
30.4G 
1,069ft 
7.5s 
7s 

AeroTech G76 
33.2oz 
83ft/s 
305ft/s 
15.3G 
1,124ft 
7.9s 
6s 

Cesaroni G126 
33.1oz 
83ft/s 
356ft/s 
16.3G 
1,133ft 
7.8s 
7s 

AeroTech G64 
33.3oz 
73ft/s 
301ft/s 
10.7G 
1,157ft 
8.2s 
6s 

AeroTech G75 
32.6oz 
68ft/s 
330ft/s 
10.1G 
1,184ft 
8.2s 
6s 

Cesaroni G131 
35.1oz 
81ft/s 
369ft/s 
14.2G 
1,191ft 
8.0s 
7s 

AeroTech G78 
32.4oz 
68ft/s 
347ft/s 
10.2G 
1,210ft 
8.2s 
7s 

AeroTech G125 
32.4oz 
81ft/s 
392ft/s 
15.5G 
1,243ft 
8.0s 
7s 

AeroTech G80 
32.5oz 
70ft/s 
360ft/s 
10.5G 
1,284ft 
8.4s 
7s 

Cesaroni G106 
34.6oz 
70ft/s 
392ft/s 
12.6G 
1,328ft 
8.5s 
7s 

KBA G82 
36.1oz 
60ft/s 
366ft/s 
8.6G 
1,359ft 
8.8s 
7s 

KBA G135 
36.0oz 
75ft/s 
413ft/s 
14.5G 
1,364ft 
8.5s 
7s 

AeroTech G75 
36.2oz 
57ft/s 
365ft/s 
6.8G 
1,441ft 
9.2s 
7s 

AeroTech H165 
35.1oz 
93ft/s 
466ft/s 
18.5G 
1,531ft 
8.7s 
8s 

Cesaroni G125 
34.9oz 
85ft/s 
446ft/s 
15.7G 
1,532ft 
8.8s 
8s 

Cesaroni G118 
34.6oz 
79ft/s 
443ft/s 
15.2G 
1,538ft 
8.9s 
8s 

Cesaroni H175 
36.7oz 
92ft/s 
477ft/s 
20.7G 
1,550ft 
8.8s 
8s 

Cesaroni H133 
34.7oz 
85ft/s 
456ft/s 
18.9G 
1,570ft 
8.9s 
8s 

Cesaroni H410 
34.4oz 
151ft/s 
540ft/s 
53.5G 
1,572ft 
8.5s 
8s 

Cesaroni G54 
34.8oz 
73ft/s 
341ft/s 
11.5G 
1,584ft 
9.5s 
6s 

Cesaroni H163 
34.6oz 
91ft/s 
487ft/s 
21.6G 
1,598ft 
8.9s 
8s 

Cesaroni H90 
33.7oz 
79ft/s 
432ft/s 
15.5G 
1,619ft 
9.1s 
7s 

AeroTech G138 
33.2oz 
81ft/s 
507ft/s 
17.6G 
1,622ft 
8.9s 
8s 

AeroTech H128 
35.3oz 
89ft/s 
477ft/s 
17.5G 
1,628ft 
9.0s 
8s 

Cesaroni H87 
35.2oz 
70ft/s 
426ft/s 
12.1G 
1,631ft 
9.3s 
7s 

AeroTech H238 
34.9oz 
104ft/s 
506ft/s 
23.3G 
1,638ft 
8.8s 
8s 

Cesaroni H54 
35.4oz 
66ft/s 
351ft/s 
9.3G 
1,656ft 
9.8s 
6s 

Cesaroni H123 
36.0oz 
77ft/s 
473ft/s 
12.9G 
1,662ft 
9.2s 
8s 

AeroTech H115 
35.2oz 
74ft/s 
473ft/s 
11.6G 
1,698ft 
9.3s 
8s 

AeroTech H97 
37.8oz 
67ft/s 
452ft/s 
9.4G 
1,747ft 
9.6s 
7s 

Cesaroni H118 
36.2oz 
84ft/s 
477ft/s 
15.9G 
1,758ft 
9.3s 
8s 

Cesaroni H237 
38.4oz 
103ft/s 
577ft/s 
24.8G 
1,843ft 
9.2s 
8s 

AeroTech H220 
36.8oz 
110ft/s 
575ft/s 
29.0G 
1,867ft 
9.2s 
8s 

AeroTech H210 
36.7oz 
105ft/s 
583ft/s 
24.0G 
1,900ft 
9.3s 
8s 

Cesaroni H151 
36.4oz 
92ft/s 
541ft/s 
19.1G 
1,906ft 
9.4s 
8s 

KBA H130 
53.0oz 
77ft/s 
438ft/s 
13.9G 
1,933ft 
10.3s 
8s 

Cesaroni H170 
36.2oz 
102ft/s 
575ft/s 
22.6G 
1,976ft 
9.5s 
8s 

AeroTech H182 
35.3oz 
94ft/s 
607ft/s 
18.2G 
1,982ft 
9.5s 
8s 

Cesaroni H160 
37.6oz 
90ft/s 
573ft/s 
16.7G 
1,985ft 
9.7s 
8s 

Cesaroni H135 
36.9oz 
87ft/s 
545ft/s 
15.1G 
1,993ft 
9.7s 
8s 

AeroTech H180 
36.9oz 
101ft/s 
601ft/s 
23.8G 
2,026ft 
9.6s 
8s 

AeroTech H250 
37.0oz 
121ft/s 
637ft/s 
30.4G 
2,040ft 
9.5s 
9s 

KBA H225 
39.1oz 
93ft/s 
641ft/s 
23.2G 
2,110ft 
9.8s 
9s 

AeroTech H195 
34.9oz 
108ft/s 
656ft/s 
25.2G 
2,113ft 
9.6s 
8s 

Cesaroni H295 
40.1oz 
119ft/s 
677ft/s 
30.6G 
2,125ft 
9.6s 
9s 

AeroTech H135 
35.5oz 
82ft/s 
549ft/s 
14.6G 
2,128ft 
10.0s 
8s 

Cesaroni H53 
38.1oz 
57ft/s 
419ft/s 
7.8G 
2,218ft 
11.2s 
7s 

Cesaroni H180 
39.1oz 
102ft/s 
628ft/s 
23.9G 
2,220ft 
10.0s 
8s 

Cesaroni H194 
38.0oz 
101ft/s 
644ft/s 
25.7G 
2,221ft 
9.9s 
9s 

Cesaroni H200 
37.7oz 
106ft/s 
654ft/s 
26.7G 
2,256ft 
9.9s 
9s 

Cesaroni H340 
41.8oz 
127ft/s 
739ft/s 
37.3G 
2,303ft 
9.8s 
9s 

Cesaroni H255 
36.2oz 
125ft/s 
728ft/s 
36.4G 
2,313ft 
9.8s 
9s 

Cesaroni H399 
38.4oz 
152ft/s 
781ft/s 
50.2G 
2,318ft 
9.8s 
9s 

Cesaroni H140 
37.8oz 
102ft/s 
609ft/s 
22.4G 
2,354ft 
10.2s 
8s 

Cesaroni H226 
40.7oz 
114ft/s 
710ft/s 
30.0G 
2,482ft 
10.2s 
9s 

AeroTech H268 
40.6oz 
116ft/s 
747ft/s 
28.2G 
2,492ft 
10.2s 
9s 

Cesaroni H159 
40.1oz 
87ft/s 
663ft/s 
15.8G 
2,514ft 
10.6s 
9s 

Cesaroni H233 
39.6oz 
115ft/s 
742ft/s 
30.0G 
2,528ft 
10.2s 
9s 

Cesaroni H255 
39.2oz 
121ft/s 
774ft/s 
36.9G 
2,552ft 
10.2s 
9s 

Cesaroni H160 
39.3oz 
111ft/s 
667ft/s 
28.0G 
2,606ft 
10.5s 
8s 

AeroTech I200 
40.6oz 
110ft/s 
715ft/s 
25.9G 
2,619ft 
10.5s 
9s 

Cesaroni I204 
40.3oz 
114ft/s 
753ft/s 
30.9G 
2,736ft 
10.5s 
9s 

AeroTech I205 
39.1oz 
109ft/s 
772ft/s 
32.5G 
2,738ft 
10.5s 
9s 

Cesaroni I243 
42.1oz 
122ft/s 
807ft/s 
36.3G 
2,903ft 
10.7s 
9s 

Cesaroni I224 
41.1oz 
126ft/s 
812ft/s 
37.0G 
2,904ft 
10.7s 
9s 

KBA J520 
53.5oz 
142ft/s 
1,194ft/s 
47.0G 
3,915ft 
11.9s 
11s 
W,D 
Estes G80 
32.4oz 
9:1 thrust/weight ratio (no data) 
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).
