I’ve have been building this plane in parallel with the F22. Extra 300 is a free PDF-plane from rcpowers.com

The idea with this plane is to use a motor with variable pitch. These setups are rare and a bit more expensive than other powers systems. I will also have to install another servo to be able to change the pitch rate on the prop. 4D motor features a hollow motor shaft and I bought a set from hobby-lobby.com some weeks ago. The motor mount coming with this motor is designed for 3mm depron and I’m using 6mm depron. This is my first real problem on this plane so far. Will probably grind the front down to 3mm to be able to mouting the motor.

Update: the 4D motor were to weak for this plane and failed pretty quick. It`s now run as a pure 3D plane, even as this it`s way to flexible. I should have stiffened it of with more carbon.

Another mistake I did was making the plane in 105% size, 5% bigger than the orginal. If I were to build this again it would be 80%.

View all pictures of the plane below.

Extra 300

Tags: 3.0mm, 4D, 6.0mm, depron, Extra 300, F22, hobby-lobby.com, motor, mount, PDF, power systems, project, rare, rcpowers.com, servo

This entry was posted on Friday, March 20th, 2009 at 7:08 pm and is filed under Hobby, RC. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.