I'd just got done putting a remote kill switch on my plane. A 30 cc goldwing MX with a DLE 30 on it.
I had retarded the timing by 3 degrees or so and had retuned it..
now I had been waiting several days to fly it so when I seen a clearing in the rain I took her out to the field.
Now prior to that I had put a lipo in my Futaba 9C with a couple of diodes to reduce the voltage.
I took the battery out of the TX the night before to charge it.
the next day when I got to the field after starting her up my throttle curve seemed way off as did my throttle trim.
Now I had set that all up a week before that with the cowl off and everything was fine.
But now it was really off. It wopuldn't come off Idle till almost a 1/3rd throttle.
So I went into the program screen and reduced the expo on the throttle.
For some reason I dumb thumbed it getting out of the program menu.
I then had to change the throttle trim.
Now mind you I had done all this a week earlier.
I checked all my control surfaces, but I didn't check to make sure the ailerons were in the right direction.
I seen no need to as I've been flying this plane for over a year and I'm using a wye connector for them.
So thinking everything was fine I throttle up and headed down the runway. Now the minute she lifted off she dropped her left wing. This had never happend before but I calmly add right aileron.
To my suprize she rolled left really hard.
Did a full 360 and then caught the left wing tip on terra firma. spinning her around and throwing wood everywhere.
Now she had came to a rest right side up on her belly.
I ran up to her and the 1st thing I noticed was the right aileron was a bit low. I moved the sticks and they worked fine, but upon closer inspection I found they were backwards.
HOW COULD THIS OF HAPPENED?
looking at my plane the lower longerons were gone alone with the bottom of all the formers.
My motor box was busted as well and one side going all the way back to the wing tube as well.
Now the rain had started coming down again so I packed up.
I was thinking if I patch her back together she'll be a lumberwagon.
So I gave Gerry at GMP a call and it just so happened he had a fuse for me.
I got the fuse and stabs for 150 dollars. so now I'm back to work on her.
I did find the the left wing root had some busted sheeting when I got her home but other than that the wings look fine.
I did have a problem with my old wing tube being a smidget bit to big for the fiberglass fuse wing tube.
I sanded the inside so but when I put the wing tube in and twisted it. It broke the glass tube.
I just removed the center of the tube and now it fits fine.
Lots of work left to do.

I'm wondering if I over built the undercarraige the 1st time.
And of course I'm still trying to figure out how the ailerons got reversed. My radio is a 9C

Wrong Model?

I have know ideal if this is the case,but something maybe we should all check on.Our radios are now computers,not like the older 72 days.All pc's\laptops have batteries in them to retain settings in the motherboard,not for when you turn them off,but for when they get unplugged.I wonder if our radios have these?Removing your battery to charge it outside the radio and the onboard battery being dead could cause some lost settings.Anyone know if these 2.4 radio's have these little batteries on the mb?
Jeff Sikes

I used a Futaba 9C for eight years and regularly removed the battery pack for charging and never lost any settings. The ailerons are the default selection in the servo reverse menu so if he "dumb-thumbed" his way out of the 9C menu, he could have easily changed this. That or he may have had the wrong model selected which would also explain the unexpected change in throttle settings.

It was the right model.
Yeah it's also a 72 MHZ.
I may very well have dumbed thumbed it.
All I know is I never want this to happen again.

Before Every take off make sure that when you move you ail. stick to the right your right ail goes up then move it left and make sure the left one goes up then check up ele. and then down ele. then right rudder then left rudder, check it before starting the motor and on the runway before you throttle up to take off, Do this EVERY Time !!!!!!! It will save you a plane sooner or latter even if you just flew it check it out before take off !!!!!!!!!!!!!

Originally Posted by McFueler

Before Every take off make sure that when you move you ail. stick to the right your right ail goes up then move it left and make sure the left one goes up then check up ele. and then down ele. then right rudder then left rudder, check it before starting the motor and on the runway before you throttle up to take off, Do this EVERY Time !!!!!!! It will save you a plane sooner or latter even if you just flew it check it out before take off !!!!!!!!!!!!!

Your absolutely right.

Originally Posted by kerwin50

Your absolutely right.

agree, re check every flight.
Doubt you dum thumbed it, easly a wrong aircraft seting or similar, groundcheck every take off
I. trust, your,full scale pilot would do the same for you.

Originally Posted by McFueler

Before Every take off make sure that when you move you ail. stick to the right your right ail goes up then move it left and make sure the left one goes up then check up ele. and then down ele. then right rudder then left rudder, check it before starting the motor and on the runway before you throttle up to take off, Do this EVERY Time !!!!!!! It will save you a plane sooner or latter even if you just flew it check it out before take off !!!!!!!!!!!!!

+1

Too easy to plug in something wrong on many models and thus create reversed ailerons or other issues.

Full control response check before every takeoff. It may find a failed servo...

Kerwin,

You will do this once.
You will be paranoid forever about aileron reversal.
Actually its a good thing.

Sometimes things like this keep us paying attention to detail.

Ronster

Good idea to practice every time. I learned the hard way. Mine were not reversed, but not connected. Plane banked hard left on take-off and I went to correct and nothing. Thankfully it was a plane that was well seasoned and not a new one. My flying buddy and I bug each other each flight-"check your surfaces?"

I am disappointed! no pics ? nah just kiddin ya........ sorry to hear about your plane, but yes, something I do every flight as I taxi out to the runway is move the surfaces, and verify they are working as intended. I once forgot to plug in ailerons on a plane, and by the time I reacted with rudder it was too late and too lil effective. It was a minor damage, but none the less, made me a stickler for checking and rechecking things.

Originally Posted by PropsnWings

I am disappointed! no pics ? nah just kiddin ya........ sorry to hear about your plane, but yes, something I do every flight as I taxi out to the runway is move the surfaces, and verify they are working as intended. I once forgot to plug in ailerons on a plane, and by the time I reacted with rudder it was too late and too lil effective. It was a minor damage, but none the less, made me a stickler for checking and rechecking things.

Plus one on that. I've got her back up and flying once again.
I really love my MX.
There is just somthing about that green color sheme.
I've found the v3 fuse to be alittle lighter in the tail as well.

Here's a video of her after my repair
http://www.youtube.com/watch?feature...&v=4neuVcCXHPg

You look but don't see. Happened to me once. Now when i do my pre-flight I say " left up, right up" same with the elevator and rudder. I say it out load so I hear myself saying it. Fear keeps me doing it. Dennis