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Motor Guide Results

Here is your handy guide to the motors that might work with your rocket. We found 12 motors that fit and appear to have enough thrust (779 motors didn't fit). All motors had thrust curves available and 17 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:   Chopped
Owner: Jim Lane
Body Diameter: 4.00in
Dry Weight: 40.0oz
MMT Diameter: 54.0mm
MMT Length: 8.00in
CD: 0.44

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
OK AeroTech I117 60.0oz 56ft/s 534ft/s 8.8G 2,572ft 11.9s 9s
OK AeroTech I599 58.1oz 147ft/s 776ft/s 46.8G 2,695ft 10.8s 10s
OK AeroTech I215 58.6oz 84ft/s 643ft/s 15.1G 2,745ft 11.5s 10s
OK Cesaroni I140 59.9oz 62ft/s 560ft/s 8.5G 2,792ft 12.2s 9s
OK AeroTech I170 58.6oz 70ft/s 616ft/s 11.6G 2,826ft 11.9s 10s
OK AeroTech I229 58.1oz 83ft/s 683ft/s 15.9G 2,843ft 11.6s 10s
OK AeroTech I115 59.2oz 55ft/s 536ft/s 8.7G 2,878ft 12.5s 9s
OK Cesaroni I445 60.3oz 112ft/s 826ft/s 30.7G 3,076ft 11.5s 10s
OK Cesaroni I150 60.1oz 68ft/s 617ft/s 9.6G 3,226ft 12.8s 10s
OK Cesaroni I218 60.5oz 85ft/s 721ft/s 14.7G 3,274ft 12.3s 10s
OK Cesaroni I120 62.0oz 61ft/s 577ft/s 7.5G 3,494ft 13.6s 9s
OK Cesaroni I165 61.0oz 69ft/s 663ft/s 10.1G 3,504ft 13.0s 10s

Don't like the units? Login to set your preferences. Don't understand the results? See the motor guide help page.

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 (comma-separated value, or CSV) that can be opened with almost any spreadsheet program.

CSV Excel   Download full details of the simulation runs with the various motors:
that worked, that failed, or all of them.
 
RockSim   Download the list of motors that fit your rocket into a batch for use with SMARTSim. (See the Simulators page for more info.)

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 right-click (control-click on the Mac) on the link and chose Save File As (or similar).

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