bt-55 · apogee ebay-55 assembly instructions make sure its the side with the hole closest to the...

Ebay Parts ListP/N Description Qty

15403 33mm Ebay Laser-cut Sheet 113016 AC-33 (single) 1 13004 33mm Coupler with hole 110129 AT-33mm/2” with hole (for Ebay) 113066 Weld Nut for Rail Button 112980 6-32 x 3/8 Thumb Screw 112981 4-40 x 5/16 Fillister Slot Machine Screw 430933 33mm Ebay Instructions 147122 Clear Plastic Bag 6x14 109184 Simple Switch with 4” wires 130325 Kevlar Shock Cord 36” 1

www.ApogeeRockets.com

Booklet P/N 30933

Colorado Springs, COMade in the USA

6 56779 10543 1Fits 1.325” diameter rockets

(33mm or BT-55)

BT-55

KIT #10543

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P/N

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Apogee EBAY-55 Assembly Instructions

Make sure its the sidewith the hole closestto the end

Step 1

E2

Step 2

A1

BatterySwitch E2

E1

B2 B1

A2

“C” Shape

“D” Shapes

“E1” side

“E2” side

“B1” Shape (smaller disk)

E Shape

“B2” Shape (larger disk)“A1” Shape (smaller disk)

“A2” Shape(larger disk)

Step 3

Step 7

Top Side of Sled

Sand surfaces

�rst

Step 6

� 1. Insert Red Tube Coupler “F1” into White Tube Coupler “G”. Align the holes on both tubes first, then use wood glue to glue them together and let dry.

� 2. Insert the remaining Red Tube Coupler “F2” into the opposite end and glue into place and let dry. Set aside the completed tube for now. *Optional You can write “E2” on the coupler with the hole and on the edge of the sled itself. This will serve as a helpful reference during assembly process.

� 3. Mark the wood parts with a pencil (ex-cept the sled “E” for now) using the example image to the right. *They are already etched on the plywood sheet but marking the shapes themselves with a pencil will serve as a helpful reference during the assembly process.

� 4. Remove the sled Shape “E”, the 2 disks “B1 & B2” and Shape “C” from the plywood sheet. Leave the other pieces in for now. Re-move the small excess pieces inside the slots & holes with a pencil or screwdriver.

� 5. Gently sand both sides of the sled and test fit one of the “B” disks on each end. The disk should slide on and off easily on both ends when completed. Now mark the ends of the sled with a pencil as “E1 & E2”. Use the image example in Step 3.

� 6. Sand the sides of Shape “C” and then place it into the slot on the sled. Make sure the wider end sticks up from the side of the sled that shows the Apogee logo imprint. Once securely in place, dab a small amount of wood glue on the joining pieces along the non-Apogee side and let dry.

� 7. Insert metal Weld Nut “H” into Shape “C” with male end facing outwards towards Apogee logo imprint. Use thick super glue to secure it into place. *Be careful not to get super glue in the threads. Also, you can center the weld nut by placing the A1 piece on the end while gluing the them into place.

Tube Assembly

Sled Assembly

Apply the wood glue here before

pressing the diskstogether

Press both disks onto the edge of the

sled and removeafter they are

together

Step 9

Step 8

Marker lineStep 11

� 8. Place the smaller of the disks, “B1” on the “E2” end of the sled and slide it up until it stops. Now apply a small amount of wood glue to the outside surface of the “B1” disk. Then take your larger disk “B2” and quickly slide it up against “B1” (Use the image on the right for reference). Immediately wipe off any glue that oozes out of the pieces on the outside of the disks. Now apply a fillet of wood glue to where the sled meets the disks and let dry.

� 9. For the opposite side of the sled: Remove the disk Shapes “A1 & A2” from the wood kit and remove the excess pieces inside them with a screwdriver or pencil. Place the smaller disk “A1” on the “E1” side of the sled first. Then place the larger disk “A2” on after it. Dab a small amount of wood glue between the 2 disk and then press them together. DO NOT GLUE THESE DISK TO THE SLED. Once they begin to dry make sure to pull the disks off the end of the sled and set aside for now. *Wipe off any excess glue that oozes out along the outside edges.

� 10. Temporarily insert the assembled sled into the Completed Tube (From Step 1 & 2) and rotate the coupler to align your switch hole with the sled. Then, mark the side/edge of the sled through the hole.

� 11. Remove the sled from the completed tube and then align the switch button with the mark you made in the prior step and super glue it to the sled with thick super glue. *Be very careful not to glue the switch button itself or the inside of the switch. This may permanently damage the switch from working properly.*You may need shorten the wire lengths by cutting and re-stripping the ends.

� 12. Take your Altimeter “N” and align it with the corresponding holes on the Sled “E”. The PerfectFlite StratoLogger CF altimeter will align with the holes spaced farther apart and the Altus Metrum EasyMini altimeter with the holes that are closer together.

Sled Assembly Continued...

Step 10

PerfectFlite StratoLoggerCF

Altus Metrum EasyMini

Step 12

� 13. Once your corresponding holes are determined, carefully remove the laser cut holes on the sled with a small screwdriver or pencil. Feel free to rub a small amount of wood glue in the remaining holes that won’t be used to seal them.

� 14. Use your tap and drill kit to hand thread the open holes for your altimeter placement.

� 15. Remove 4 of the wooden washers Part “D” from the plywood sheet. The remainder can be saved and used later if needed. They are provided as extras. *Refer to the “Step 3 Image” on Page 3 for help locating these.

� 16. Carefully place the 4 small wooden washers over the corresponding holes. Then slowly place the altimeter on top of your wooden washers.

� 17. Use your screwdriver to insert the small plastic screws Part “J” into the corner holes on the top of the altimeter and into the threaded holes in the sled assembly. You may need to carefully adjust the washer placement as they can slide around while you insert the screws. NOTE: The screws will not extend of out the bottom side of the sled

� 18. Attach the switch wiring to the altimeter (per your altimeter instructions).

� 19. Tape the battery to the top of the sled on top of the area with the inscription “Battery”.

� 20. Now, connect the battery to the altimeter (refer to altimeter instructions for details).

Sled Assembly Continued...

Step 13 Step 14

Side View Altimeter Switch

Wooden Washers

Top ViewStep 16

Switch Connection

Screw Placement

Step 17

Top of Sled

TapeBattery

Steps 18-19

� 21. Trim the exposed wires on the igniters to 1/8th inch. This will prevent any shorts from the exposed wires touching each other. Then attach the Drogue and Main igniters to the terminal block on the altimeter. *Refer to your specific altimeter instructions for further details and MAKE SURE YOUR ALTIMETER IS CONFIGURED TO YOUR PREFERENCES AT THIS POINT, BECAUSE IT WILL BE HARDER TO ACCESS AFTER YOU COMPLETE THE EJECTION CANISTER SETUP.

� 22. Now feed the Main igniter through the hole in the disk on the “E2” side of the sled. Then bend the Drogue/Apogee igniter around the left side of the “C” Shape and towards the “E1” side of the sled.

� 23. Slide the completed tube over the sled assembly (Use the diagram on the right for ref-erence). The tube will slide over the “B1” part of the disk and butt up against “B2”.

� 24. Take your completed disk piece from Step 9 “A1&A2” and place it over the open end of the sled. Make sure the smaller side of the disk piece goes on first and insert the igniter through the smaller hole.

� 25. Screw the Metal Thumb Screw “I” into the center hole on the “E1” part of the sled. Tighten the screw to secure the fit. You may need to rotate the tube around in order to align the switch with the open hole on the tube.

Igniter Assembly

E2

B2 Shape

E2

MainIgniter Side

Apogee/DrogueIgniter Side

Terminal block

Drogue/Apogee Igniter goes around the “C” shape towards “E1” Side (bottom of the rocket)

Main Igniter goes towards the “E2” Side of the sledand through the small hole on the end.

Hole for “Main” Igniter

C Shape

Steps 21-22

Step 23

Step 24

Make sure the switch is visible from the tube holeStep 25

*VERY IMPORTANT* MAKE SURE THE SWITCH IS IN THE “EXTENDED/OFF POSI-TION” BECAUSE YOU WILL NOW BE CON-NECTING BLACK POWDER TO THE IGNIT-ERS.

� 26. Take a latex glove and measure it at about 1.25” from the end of the finger tips, then cut 2 of the fingertips off.

� 27. Measure and cut a piece of string at about 7” long. Cut it in half. This will give you two 3.5” pieces of string, one for each side.

� 28. Fill the inside of each cut finger tip from the glove with 0.5 grams of black powder. *Your rocket may need more or less black pow-der. Consult your ejection charge calculator.

� 29. Set the Ebay down on a flat surface and then place the Apogee/Drogue igniter through the open end of the finger tip. Attempt to squeeze most the air out of the bottom of the fingertip.

� 30. Wrap the string around the cut finger tip of the glove. Then tie a knot just above the top of the black powder line being sure to leave no air pockets above the powder.

� 31. For the Main igniter setup, repeat Steps 29 & 30 above.

� 32. Optional step: If you want to save time ty-ing and untying your shock cord from the “E1”/Apogee side of the sled, you can use the quick link to attach your shock cord to instead.

� 33. Tie your Kevlar cord to the “E2” end of the Ebay sled. Now place the Ebay into your rocket tube (with the “E2” side facing upwards towards the nose cone). Tie the Kevlar cord to the nose cone.

� 34. Congratulations, the EBAY assembly is complete and ready to be placed into your rocket!

Make Ejection Canisters

1.25”

glove �ngertips

stringcut in half at 3.5”

Steps 26-27 Step 28

For this step rest

Ebayon �at surface

IgniterIgniter For this

step rest Ebay

on �at surface

Step 29

IgniterIgniter

String

For this step rest


For this step rest


Step 30

Step 32

Go online and order at the website above or call us and order at 719-535-9335. We’re available M-F: 8:30am-5:00pm MST

✓ Recommended items: Product Number4-40 Tap and Drill Set 02090Altimeter Options: Easy Mini PerfectFlite StratoLogger CF

0920109104

1/8” Quick Link 296202 Quest Q2G2 Long Motor Starters 03079400mAh LiPo Battery 09210JST LiPo Battery Connector with Wires (For StratoLogger CF Connection to LiPo Battery)

09301

www.ApogeeRockets.com

For video tips/instructions on how to set-up your dual-deployment rocket go to our website link at https://www.apogeerockets.com/Advanced_Construction_Videos/Rocketry_Video_26

bt-55 · apogee ebay-55 assembly instructions make sure its the side with the hole closest to the...

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