This 38mm spinner is an RC electric motor nose cone crafted to fit D3.0mm motor shafts. It can be used as a replacement or an upgrade on models that accept a 3.0mm diameter shaft mount, supplied in red to blend with your model's finish.
Compatibility is determined by shaft diameter: the spinner is intended for motors with a D3.0mm shaft. Confirm the shaft measurement before installation and ensure any prop adaptor or collet aligns with both the shaft and spinner bore to avoid misfit.
Installation guidance: slide the spinner over the motor shaft or prop adaptor, position it so it is concentric with the shaft, then secure using the existing prop nut or retaining hardware. Check for runout at low throttle and spin up progressively after fitting; re-align if you notice vibration or wobble.
Tuning and service use: the spinner cleans the nose profile and centralises prop mounting. It is useful as a service spare during routine maintenance to restore proper appearance and mounting function.
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