APC AP1104 Propeller 11x4 RC Propeller Spare  [AP1104]

11x4 propeller for electric RC models

This APC AP1104 propeller is presented as an RC-scale replacement blade intended for electric model aircraft and trainers. The write-up focuses on practical fitment and tuning rather than brand claims, describing how a standard 11x4 blade functions in typical hobby setups where balancing and matching to motor and ESC characteristics matter.

Installation is straightforward on most spinner and hub arrangements: confirm spinner bore and prop adaptor fit, secure the prop with the correct nut or backplate, and follow manufacturer torque guidelines for your spinner hardware. If your model uses a threaded shaft or a collet-style adaptor, ensure the prop sits flush and centered before tightening.

In tuning terms the 11x4 designation indicates blade diameter and pitch, affecting thrust and rpm under load; in practice this size is used when a balance between acceleration and cruising efficiency is required. Routine tasks for maintaining consistent performance include visual inspection for nicks, static balancing on a prop balancer, and verifying there is no persistent vibration under throttle that could indicate a fitment or motor alignment issue.