EZ 3chMicro Twin SR-71 Profile Build

[GrizWiz]

basicly the problems in the video but without ailerons to help stop them

 

[Flyingshark]

It was just rolling like heck

It sounds like the v-stabs might be too small? Since it (the real one) was meant to fly really fast most of the time, it doesn't have much wing and rudder area. And all those small surfaces are going to be less effective at low speeds. It sounds like it rolled right after you launched it, maybe it just needs more speed to be able to deal with the wind and the p-factor stuff from the motors.

TL;DR
Maybe try launching/flying it faster? (Power and speed solve many things. )

 

[L Edge]

So what your telling me there is a FC that does the work. If that is so, you have no way of making changes. So, I guess you just try. If the nose goes up, your tail heavy. It it heads for the ground, try moving aft.

So what your telling me there is a FC that does the work. If that is so, you have no way of making changes. So, I guess you just try. If the nose goes up, your tail heavy. It it heads for the ground, try moving aft.

It sounds like the v-stabs might be too small? Since it (the real one) was meant to fly really fast most of the time, it doesn't have much wing and rudder area. And all those small surfaces are going to be less effective at low speeds. It sounds like it rolled right after you launched it, maybe it just needs more speed to be able to deal with the wind and the p-factor stuff from the motors.

TL;DR
Maybe try launching/flying it faster? (Power and speed solve many things. )

Not for landing. Same thing will happen.

 

[Flyingshark]

Not for landing. Same thing will happen.

Yeah, flying faster doesn't solve the entire problem, but it might help for some of the flight, and there aren't any changes to the airframe. That's why I suggested making the v-stabs a little larger, but that still might not solve the rolling problem though.

 

[AIRFORGE]

Check the way you have the board mounted. It looks like it has to be mounted a specific way for the gyro's to function properly.

 

[GrizWiz]

Oh oops!

 

[AIRFORGE]

And, if there's no dihedral, I don't think it will be stable with the EZ power pack.

 

[GrizWiz]

I will try to add some diheadral

 

[The Hangar]

Check the way you have the board mounted. It looks like it has to be mounted a specific way for the gyro's to function properly.

And, if there's no dihedral, I don't think it will be stable with the EZ power pack.

Yup - those two additions should make a big difference!

 

[GrizWiz]

Yup - those two additions should make a big difference!

Cool thanks!

 

[GrizWiz]

Alright I added dihedral and a slot for the control board to sit straight in! If some one else can work on this version that has the 3 channel pack that would be great!

 

[GrizWiz]

Alright I added dihedral and a slot for the control board to sit straight in! If some one else can work on this version that has the 3 channel pack that would be great!

Also Im working on a F-18 too

 

[wiz bang]

Also Im working on a F-18 too

can you send me the f18 plans if done

 

[GrizWiz]

can you send me the f18 plans if done

Sorry I have not finished

 

[wiz bang]

that is fine

 

[wiz bang]

would you like to take place in a build of using the ft ez 2ch

 

[wiz bang]

Alright I added dihedral and a slot for the control board to sit straight in! If some one else can work on this version that has the 3 channel pack that would be great!

do you think I could use the 2ch instead

 

[wiz bang]

Here is a video showing some of the problems you have to deal with.

that is a great plane man