Ez3D-Mini-Lite

• Great park flyer that uses mini A motors.
• Parts tape together - No glue required!

Tall thin structures (like rockets) can be a challenge to print. Ez3D Rocketry designs use 3D printing for the short, complex parts such as fin cans and nose cones while incorporating commercial cardboard body tubes as airframes.

Parts List:

1. Ez3D-1320 Fin Can
2. BT-20 Nose Cone
3. 13mm Retainer Cap
   • Print out the multiple sizes (No scaling, +3%, +5%), These account for different printing tolerances and post flight shrinking.
4. Six (6) inches of BT-20 type body tube
   • A standard 18 inch tube makes three kits
   • 3D printable tube cutting guide included in repository files
5. Three (3) feet of Kevlar string for Recovery Harness
   • Flight tested on 9KM DWLIFE Black Braided Kevlar Cord (1.3mm, 300 lb) but others may work
6. Twelve (12) inches of streamer (Optional)
7. Tape

Assembly:

NOTE: Individual printers and filament have different tolerances 

- Fit check items before assembly and sand to fit if required

1. Tie Recovery Harness to hole in Fin Can
2. Thread Recovery Harness thru Body Tube
3. Slide Body Tube onto top of Fin Can
4. Tape Body Tube to Fin Can - avoid blocking integrated launch lug
5. Tie loose end of Recovery Harness to Nose Cone
6. Tie streamer to Recovery Harness near top of Nose Cone

Launch Preparation:

1. Insert 1 or 2 squares of recovery wadding into Body Tube
2. Load Recovery Harness and Streamer into Body Tube
3. Place Nose Cone on top of Body Tube - ensure slightly snug fit
4. Load motor into Fin Can
5. Screw Motor Retention Cap onto base of Fin Can
   • Depending on your printer, the larger sizes may fit better
   • After a flight or two, the smaller size may fit better
6. Launch using standard model rocket procedures

Recommended motors and expected performance:

1/2A3-2T or 4T = 170 ft (Optimum delay = 2.9 s)

A10-3T = 370 ft (Optimum delay = 3.5 s)

A3-4T = 400 ft (Optimum delay = 3.9 s)

IMPORTANT POST FLIGHT NOTES:

• 3D printed material shrinks after cooling down from heat of motor
• Removal of motor may be difficult or impossible after one or several flights
• The smaller motor retainer cap may fit better after the first flight
• If existing motor retainer caps no longer work, friction or tape may suffice for retention
• PLA filament most susceptible to shrinking. Others may last longer.

Entire kit fits in a Ziplock sandwich bag!

Comments? Try ez3drocketry@gmail.com