Simple Scout build flips to the left and crashes

[Joshfoils]

My 11-year-old son built the simple scout and is having issues getting the plane in the air. Planes veers to the left and eventually flips. Using motor pack c. See the videos. Any help diagnosing would be appreciated. He's been flying rc jets for the last 4 months. This is his first build on his own.

 

[shuimo]

From my limited experience, if there is no wind, the reason for the rolling moment may be that the angle of attack is inconsistent when installing the two wings, or the propeller angular momentum is not balanced. You can set an initial deflection angle for the aileron. Or simply make the right half heavier.

 

[Foamforce]

It appears as if the ailerons are reversed. It looks like the left aileron goes up in both videos, which is consistent with a left roll.

I can’t be completely certain because the video isn’t high enough resolution, but that’s also the only thing that would make it roll that rapidly.

 

[Houndpup Rc]

It appears as if the ailerons are reversed. It looks like the left aileron goes up in both videos, which is consistent with a left roll.

I can’t be completely certain because the video isn’t high enough resolution, but that’s also the only thing that would make it roll that rapidly.

That would do it!

 

[Mr NCT]

The C pack is a little over powered for that plane and could easily cause P factor/torque roll. Of course, reversed ailerons would make it worse. I love the first video with a clean roll back to a wheel landing

 

[Houndpup Rc]

The C pack is a little over powered for that plane and could easily cause P factor/torque roll. Of course, reversed ailerons would make it worse. I love the first video with a clean roll back to a wheel landing

I had used that size of a motor on mine......But I did have a gyro.

 

[Mr NCT]

But I did have a gyro

A good gyro covers a multitude of sins

 

[Mr Man]

A good gyro covers a multitude of sins

Hmm, I've never used a gyro on my scratchbuilds, but I did start with an ultralight mustang.

 

[Houndpup Rc]

Hmm, I've never used a gyro on my scratchbuilds, but I did start with an ultralight mustang.

Oh it really covers your true building skills! lol

 

[Mr Man]

Oh it really covers your true building skills! lol

 

[Foamforce]

Upside downThe C pack is a little over powered for that plane and could easily cause P factor/torque roll. Of course, reversed ailerons would make it worse. I love the first video with a clean roll back to a wheel landing

I thought about mentioning that, but that roll is so severe that I don’t think torque was a major factor. It’s more like a rounding error compared to what we see in that video. 🙃

 

[Merv]

+1 ailerons are reversed
To check, stand behind the plane, move the stick to the right & the right aileron should go up. If it goes down, ailerons are reversed.

 

[Mr Man]

+1 ailerons are reversed

+2

 

[bisco]

= 3

 

[Mr Man]

= 3

🤣🤣

 

[Joshfoils]

Appreciate all the feedback. We checked and the ailerons were reversed.

 

[Foamforce]

Appreciate all the feedback. We checked and the ailerons were reversed.

Good to hear! Fwiw, this happens a lot, even to experienced pilots. Every time we say, “This time I learned and I’m going to check thoroughly every single time from now on.” And then it happens again. 😄

 

[JDSnavely]

My boys have a favorite memory of our early crashing/ flying days. It was with an Alpha that I had scratch built. I had to take it inside for a minor repair. When I came out to fly, somehow the elevator reversed after the repair (still not sure how). I forgot to check the servos before flying and rammed it into the ground shortly after launch. "Dad, what happened?" "Somehow my elevons reversed..." "Did you check them before flying?" " I thought I did...... Boys, always remember to check your servos before every flight!"