Useful Mechanisms
1. Sine mechanism
2. Coaxial propeller drive mechanism
3. Double card an U joint
4. Worm wheel
5. Universal joint
![](https://www.ayewind.com/avatars/320/default.png)
1. Sine mechanism
2. Coaxial propeller drive mechanism
3. Double card an U joint
4. Worm wheel
5. Universal joint