GEMFAN Qianfeng D90-3 3-leaf 3.5-inch inverted duct crossing machine model aircraft accessory is designed for hobbyists and builders seeking reliable rotor components for small ducted models. The three-blade configuration delivers smooth, balanced thrust in a compact 3.5-inch diameter, suitable for tight installations and ducted setups. Constructed to fit common small inboard housings, it aims to provide consistent performance for indoor and outdoor model applications.
This part is intended as a replacement or upgrade for compatible miniature ducted craft. Its inverted duct-friendly design helps reduce interference with surrounding structures and aids airflow stability within the shroud. Lightweight and straightforward to install, it works well in projects where space and clearance are limited.
Highlights:
– 3-leaf, 3.5-inch design for compact ducted models
– Inverted duct compatible for improved airflow
– Lightweight construction for model aircraft applications
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