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Electronics Bay Construction

E-Bay Specifications

Component Description
Diameter 98mm (4")
Design Single threaded rod (lighter than dual)
Access Wing nut removal, sled slides out
Sled Glued to one bulkhead

Design Advantages

Apogee's e-bay design features:

  • Fewer parts = lighter weight
  • Faster field setup
  • Shorter pre-flight checklist
  • Easy electronics access

Assembly Steps

1. Bulkhead Preparation

  • Sand edges of plywood bulkheads
  • Remove any laser char

2. Stop Rings

  • Glue stop rings to inner tube
  • These position the sled correctly

3. Threaded Rod Rails

  • Glue alignment rails for threaded rod
  • Ensures straight rod path

4. Sled Assembly

  • Glue sled plate to bulkhead with single slot
  • Add internal fillets for strength
  • Pre-drill holes for altimeter mounting

5. Switch Band

  • Install switch band on coupler tube
  • May need to peel inner paper layer if tight fit
  • Glue centered on coupler

6. Eyebolt Installation

  • Install eyebolts on both bulkheads
  • These attach to shock cords

7. Final Assembly

  • Insert sled through coupler
  • Secure with washer and wing nut
  • Test fit in airframe

Electronics Mounting

Altimeter Installation

The sled provides mounting holes for:

  • Dual deployment altimeter
  • GPS tracker
  • Wiring routing between sides
  • Featherweight Blue Jay (compact, affordable)
  • Missileworks RRC3
  • Eggtimer Quantum
  • PerfectFlite StratoLogger

Wiring Considerations

  • Route wires through sled holes
  • Keep wiring short to reduce snag risk
  • Use CAT5 cable for power runs
  • Strategic hot glue to prevent vibration issues

Build Photos

Photos to be added during construction