介绍：

2.5寸双涵道，装在84手抛机上的，有涵道阻挡飞行超级静音，整活画的，性能还不错，有兴趣可以试试。

2.5-inch double duct, installed on the 84 hand-throwing aircraft, the duct blocks the flight and is super quiet. It is painted for the whole life and has good performance. You can try it if you are interested.

如何安装：

图中大致位置开槽走线，用胶黏好即可；

Cut grooves for wiring at the approximate positions in the picture, and glue them in place;

选装配件（不一定，有空余用空余配置就行）：

1.桨叶用2.5寸 6 叶或者 8 叶；

1. Use 2.5-inch 6-blade or 8-blade propellers;

2.电机用13xx或者14xx的就行（玩玩的配置，不用花太多钱）；

2. Use 13xx or 14xx motors (just for fun, don’t spend too much money);

3.电机可以做差速混控；

3. The motor can be used for differential speed mixing;