Inspect and assemble a v2 flap drum
7 steps
Confirm the mechanical generation
Identify the v2 52-flap design and keep its parts separate from the older 40-flap mechanism. Compare the drum parts with the assembly guide.
Check: All parts belong to one matching mechanical release.
Companion guide, source references and reuse license
Inspect the cut parts
Remove debris from slots and inspect the wheel edges and strut tabs. Dry-fit parts before adhesive; do not force a tight joint until the cause is understood.
Check: The pieces fit without cracked tabs or distorted wheels.
Prepare the spacer
Loosely fit the specified M4x10 bolt and nut to the spacer. Leave the bolt able to turn as described in the drum instructions.
Check: The spacer is retained but the bolt is not locked rigidly.
Fit the first wheel and struts
Assemble the struts and spacer in the documented orientation. Align the nut with the wheel hexagonal opening and seat the wheel on the tabs.
Check: The nut and tabs engage their intended openings.
Fit the second wheel
Seat the opposite wheel on the remaining strut tabs. Hold the complete drum square and compare both wheel orientations before gluing.
Check: The wheels are parallel and the drum is not twisted.
Bond the drum joints
With the drum aligned, apply the small CA dots at the wheel-to-strut joints specified by the guide. Follow the adhesive safety and curing instructions and avoid bonding the rotating bolt.
Check: The joints cure while the drum remains square.
Perform the straightness check
After curing, inspect the drum from both ends and rotate it gently by hand. Continue with the separate sensor, magnet and flap installation stages only after this check.
Check: No wheel twist, cracked joint or obvious rotating interference remains.
Project credit: Scott Bezek and splitflap contributors. Guide reuse: Apache-2.0. Upstream reference. Prepared with AI assistance for a TwinWorks-managed contributor; no physical build/test is claimed.