Motor Guide Results
Here is your handy guide to the motors that might work with your rocket.
We found 54 motors that fit and appear to have enough thrust
(717 motors didn't fit, 20 motors failed safety checks).
72 motor had thrust curves available and 139 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: 

Estes Partizon PSII 
Owner: 
Joseph 
Body Diameter: 
2.50in 
Dry Weight: 
19.1oz 
MMT Diameter: 
29.0mm 
MMT Length: 
8.00in 
C_{D}: 
0.30 
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 
22.9oz 
53ft/s 
241ft/s 
9.1G 
854ft 
7.4s 
6s 

Cesaroni F120 
22.8oz 
76ft/s 
270ft/s 
21.9G 
930ft 
7.5s 
7s 

Cesaroni F59 
22.6oz 
55ft/s 
261ft/s 
10.2G 
955ft 
7.8s 
7s 

AeroTech F42 
21.8oz 
56ft/s 
248ft/s 
10.3G 
959ft 
7.9s 
6s 

AeroTech F50 
22.1oz 
57ft/s 
312ft/s 
10.8G 
1,303ft 
9.0s 
8s 

AeroTech F25 
22.3oz 
50ft/s 
274ft/s 
8.3G 
1,312ft 
9.3s 
7s 

AeroTech F52 
23.4oz 
60ft/s 
309ft/s 
11.2G 
1,328ft 
9.1s 
8s 

AeroTech F40 
23.6oz 
54ft/s 
306ft/s 
9.4G 
1,435ft 
9.6s 
8s 

AeroTech G54 
23.9oz 
57ft/s 
337ft/s 
11.3G 
1,511ft 
9.7s 
8s 
W 
Estes F50 
22.0oz 
59ft/s 
347ft/s 
11.9G 
1,534ft 
9.6s 
8s 

Cesaroni G88 
24.5oz 
64ft/s 
370ft/s 
16.2G 
1,584ft 
9.7s 
9s 

AeroTech G104 
23.9oz 
74ft/s 
380ft/s 
17.3G 
1,644ft 
9.7s 
9s 

AeroTech G74 
22.2oz 
62ft/s 
404ft/s 
13.9G 
1,763ft 
10.1s 
9s 

AeroTech G53 
24.2oz 
62ft/s 
366ft/s 
11.8G 
1,771ft 
10.4s 
8s 

Cesaroni G80 
24.2oz 
57ft/s 
414ft/s 
13.7G 
1,863ft 
10.4s 
9s 

AeroTech G77 
24.9oz 
53ft/s 
429ft/s 
12.5G 
2,004ft 
10.9s 
10s 
W 
Estes G40 
23.4oz 
55ft/s 
391ft/s 
10.2G 
2,017ft 
11.0s 
9s 

AeroTech G40 
23.4oz 
55ft/s 
391ft/s 
10.2G 
2,017ft 
11.0s 
9s 

AeroTech G77 
23.4oz 
58ft/s 
460ft/s 
14.5G 
2,117ft 
11.0s 
10s 

AeroTech G79 
24.6oz 
62ft/s 
450ft/s 
13.7G 
2,150ft 
11.1s 
10s 

Cesaroni G68 
24.6oz 
54ft/s 
442ft/s 
12.4G 
2,168ft 
11.3s 
10s 

Cesaroni G83 
24.2oz 
66ft/s 
457ft/s 
13.9G 
2,172ft 
11.1s 
10s 

Cesaroni G57 
24.2oz 
58ft/s 
430ft/s 
12.1G 
2,197ft 
11.4s 
9s 

AeroTech G79 
23.5oz 
52ft/s 
455ft/s 
11.7G 
2,210ft 
11.3s 
9s 

Cesaroni G250 
24.1oz 
104ft/s 
521ft/s 
43.0G 
2,272ft 
10.9s 
10s 

AeroTech G76 
24.3oz 
80ft/s 
459ft/s 
21.4G 
2,355ft 
11.4s 
9s 

Cesaroni G126 
24.2oz 
80ft/s 
517ft/s 
22.6G 
2,401ft 
11.3s 
10s 

AeroTech G64 
24.4oz 
66ft/s 
456ft/s 
15.0G 
2,422ft 
11.7s 
9s 

Cesaroni G131 
26.2oz 
73ft/s 
528ft/s 
20.6G 
2,491ft 
11.6s 
11s 

AeroTech G75 
23.7oz 
64ft/s 
500ft/s 
14.3G 
2,508ft 
11.7s 
10s 

AeroTech G78 
23.5oz 
63ft/s 
521ft/s 
14.7G 
2,580ft 
11.8s 
10s 

AeroTech G125 
23.5oz 
77ft/s 
577ft/s 
22.8G 
2,665ft 
11.8s 
11s 

AeroTech G80 
23.6oz 
68ft/s 
543ft/s 
14.9G 
2,736ft 
12.1s 
10s 

Cesaroni G106 
25.7oz 
63ft/s 
572ft/s 
17.4G 
2,803ft 
12.3s 
11s 

KBA G82 
27.2oz 
55ft/s 
536ft/s 
12.6G 
2,824ft 
12.6s 
11s 

KBA G135 
27.1oz 
67ft/s 
588ft/s 
20.5G 
2,862ft 
12.3s 
11s 

AeroTech G75 
27.3oz 
52ft/s 
547ft/s 
9.7G 
2,996ft 
13.0s 
11s 

Cesaroni G125 
26.0oz 
76ft/s 
652ft/s 
21.4G 
3,249ft 
12.8s 
12s 

AeroTech H165 
26.2oz 
83ft/s 
673ft/s 
25.8G 
3,255ft 
12.7s 
12s 

Cesaroni G118 
25.7oz 
71ft/s 
651ft/s 
20.8G 
3,266ft 
12.9s 
12s 

Cesaroni G54 
25.9oz 
68ft/s 
532ft/s 
15.8G 
3,297ft 
13.4s 
10s 

Cesaroni H133 
25.8oz 
77ft/s 
668ft/s 
25.8G 
3,338ft 
13.0s 
12s 

Cesaroni H410 
25.5oz 
132ft/s 
759ft/s 
74.6G 
3,397ft 
12.6s 
12s 

Cesaroni H163 
25.7oz 
87ft/s 
705ft/s 
29.4G 
3,413ft 
13.0s 
12s 

Cesaroni H87 
26.3oz 
63ft/s 
642ft/s 
16.5G 
3,437ft 
13.4s 
12s 

Cesaroni H54 
26.5oz 
62ft/s 
550ft/s 
12.7G 
3,438ft 
13.8s 
10s 

Cesaroni H90 
24.8oz 
73ft/s 
658ft/s 
21.5G 
3,440ft 
13.2s 
11s 

AeroTech H128 
26.4oz 
85ft/s 
696ft/s 
24.2G 
3,457ft 
13.1s 
12s 

AeroTech H238 
26.0oz 
95ft/s 
729ft/s 
32.6G 
3,500ft 
13.0s 
12s 

AeroTech G138 
24.3oz 
77ft/s 
746ft/s 
26.4G 
3,501ft 
13.0s 
12s 

AeroTech H115 
26.3oz 
67ft/s 
706ft/s 
16.2G 
3,596ft 
13.4s 
12s 

AeroTech H182 
26.4oz 
83ft/s 
897ft/s 
25.8G 
4,260ft 
13.9s 
13s 

AeroTech H195 
26.0oz 
105ft/s 
975ft/s 
34.1G 
4,558ft 
14.1s 
13s 
W,D 
Estes G80 
23.5oz 
12:1 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.

Motor 
Reason 
G 
Estes E16 
speed at end of launch guide too slow (30ft/s) 
G 
AeroTech E23 
speed at end of launch guide too slow (40ft/s) 
G 
AeroTech E16 
speed at end of launch guide too slow (34ft/s) 
G 
AeroTech F23 
speed at end of launch guide too slow (43ft/s) 
G 
Cesaroni F36 
speed at end of launch guide too slow (43ft/s) 
G 
AeroTech F27 
speed at end of launch guide too slow (38ft/s) 
G 
Estes F15 
speed at end of launch guide too slow (28ft/s) 
G 
AeroTech F37 
speed at end of launch guide too slow (39ft/s) 
G 
Cesaroni F36 
speed at end of launch guide too slow (41ft/s) 
G 
AeroTech F20 
speed at end of launch guide too slow (43ft/s) 
G 
Cesaroni F32 
speed at end of launch guide too slow (36ft/s) 
G 
Cesaroni F29 
speed at end of launch guide too slow (35ft/s) 
G 
Cesaroni F31 
speed at end of launch guide too slow (39ft/s) 
5 
Estes F26 
average thrust fails 5:1 thrust/weight ratio (4:1) 
G 
AeroTech F26 
speed at end of launch guide too slow (38ft/s) 
G 
AeroTech F22 
speed at end of launch guide too slow (33ft/s) 
G 
Apogee F10 
speed at end of launch guide too slow (31ft/s) 
G 
AeroTech G38 
speed at end of launch guide too slow (45ft/s) 
G 
AeroTech G25 
speed at end of launch guide too slow (39ft/s) 
G 
Cesaroni G33 
speed at end of launch guide too slow (36ft/s) 
G These simulations were run with a launch guide length of 5ft (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).
