The flying monkeys got me...

Helis, Fixed Wing, RC Sailing

AMA 957918

Pirate Kid Skeleton by RadDezigns.

Thursday, February 24, 2011

Cubby's ESC burns up...


Almost forgot to mention... Yesterday I finished repairs on the Cubby. I had run the motor a couple of times during this repair, about 5 minutes before this last spin up. This time I smelled an electrical fire. I turned everything off and inspection revealed a capacitor on the generic ESC had burned up. I removed it from the a/c and have asked Nitroplanes to replace it. Damn, otherwise Cubby is ready to fly!

UPDATE: Wow, now that's service! I asked Nitroplanes to replace the ESC, and Eric is sending me a new one, within 30 minutes of my posting the service request on RCDisuss.com, their forum for service etc. I have always had excellent service with them, and will continue to be a customer of NP, Hobbypartz and Xheli!

Eflite Alpha Sport 450 High Wing Trainer

I did some research looking for a good high wing trainer, since the Cubby really isn't a trainer. I decided on the beautiful and well respected E-flite Alpha Sport 450, here seen after completing the build It wouldn't fit over the shelf!  I purchased it from Horizon Hobby.  I love this plane and can't wait to fly it. Its a balsa/ply Ultracote aircraft, not a foamie, so I am a little nervous about the prospect of crashing it...

I was surprised at what I suspect is a less than optimal quality of the application of the Ultracote. In comparison with the E-flite PT17 Stearman kit (also from Horizon) I am about to embark on, this was very wrinkled. The Stearman is flawless. I am going to have to learn how to smooth it out...

I put the Alpha together in one evening. A very easy build being a plug-n-play (PNP). I added a Spektrum AR 6100e receiver, but everything else was stock. The E-flite servos were all centered, and I only had to adjust the linkages at the servo arms. Programmed easily into the Dx6i, even set up dual rates. Expo at 30%. I noted that the servos give a good and complete range of motion, except the rudder. The servo is centered, and moves through its full range, but it moves the rudder fully right, only partially left... Its not binding. I don't know if that's the way its supposed to be. As I said, the servo and linkages are moving fine... Not sure what's up with that.

So, here are the pics of the wrinkles, and the fully assembled, still beautiful aircraft!


Under the landing gear on the fuse



Underside of the elevator



Starboard side



Inboard right wing



Outboard right wing



Inboard left wing



Mid left wing



Outboard left wing



Underside right aileron. Similar wrinkles on the topside of both ailerons (no pics).



Underside mid right aileron



Inboard underside left aileron



Underside outboard left aileron




Continues all the way outboard left aileron



Left wing fillet. The right is fine.






Sweet! E-flite Alpha Sport 450!

Monday, February 21, 2011

EXI 450 Electrical Failure

I was flying Radd's in the garage when the heli started getting jumpy. The swash would twitch up and down. I turned it off and inspection revealed the aileron and pitch servo wires had gotten into the main gear and rubbed through. I didn't have my camera to photograph the damage... but I repaired them by soldering in a new section, and here's the post pic.
I have repaired the Cubby, but am waiting for the new motor and the props. At some point my foamy must become a gluey, right? I mean, how much damage can it take before its all glue and no foam?

I also installed the GY192 gyro to try again to stabilize the roll, and adjusted the clevi on the control horns. I found out that the further away from the aileron the less throw. I thought it would be the other way around. Haven't tested it yet.

Saturday, February 19, 2011

Repaired Cub, Before Today's Crash

I had just gotten the Cubby repaired this morning, only to crash it again this afternoon. I had tried a cheap gyro, which would had prevented today's debacle, but it wasn't working, so I removed it. I may buy a decent one and try it again.




Below are pics of the damage after today's crash...



I'll have the fuse repaired by morning. I am going to wait for the new motor to arrive. This one was rubbing, and I bent the shaft before the crash. Its straight, but I'd just as soon get the Cubby back with a normal motor.

Brush with danger... Death Cub for Lukey

The video says it all. I need to do a better job being safe...

Flying my just repaired Exceed J3 Cub 4 ch foamie. Winds were light, but gusts were 10-15 mph. The winds here are usually from the south. The aircraft got too close to us as it would not turn upwind on an attempted landing, and blew over our heads. Once it passed I could not get it to stay down, then it lifted with a gust. When the gust passed the aircraft suddenly dived and crashed. Luke did an exceptional job filming.

Thursday, February 17, 2011

Icarus

NTSB FINAL REPORT
AIRCRAFT: Exceed Piper J3 Cub 4 Ch EP Foamie
LOCATION: Biloxi, Mississippi
INJURIES: 1 bummed but eerily excited


The day prior to the accident the pilot had ground flipped the aircraft sustaining minor prop damage but bending the prop shaft. It was repaired and a flight waiver granted to allow flight awaiting parts and final repair. The aircraft was in otherwise excellent flight condition.


Weather on the morning of the accident was clear, calm, air temp 57 degrees. Flight was conducted under visual meteorologic conditions. No TFRs or METARs were in effect in the flight area, and there were no children or vehicles to avoid. There were no other aircraft in the area. The flight area is an uncontrolled field. The novice light sport pilot is a member of the Academy of Model Aeronautics (# 957918). He has had less than 1 hour of flight time, and all of that in type. He is in good health, but probably should have been drinking...


The pilot reports the plane departed from the lot behind the Pentacostal Church on Popps Ferry in Biloxi, MS, at approximately 0745 hrs, heading west with only the imaginary pilot on board. The aircraft flew well over the entire flight area in excellent control and appeared to fly without any difficulty. The pilot skillfully executed basic flight maneuvers, much to his surprise and pleasure.


At approximately 0749 hrs, the aircraft was seen flying directly over the pilot heading due east, at an altitude of 30 to 40 feet AGL. This newbie mistake caused momentary disorientation, but controlled flight was maintained. However, shortly after reorienting himself the pilot realized he could no longer see the aircraft due sun blindness as the aircraft continued east. Aware that the tree line along the east end of the airfield was fast approaching, he made a slow blind turn to the south. The pilot reports that the aircraft suddenly appeared in the shade in a fast descending right hand turn. The aircraft impacted the ground in uncontrolled flight. Witnesses report the pilot was smiling, saying "Wow... 4 minutes of totally controlled flight!".


The aircraft is substantially damaged but repairable. The pilot sustained no physical injuries, however he is a little mental, and his hands could be seen shaking mildly at the crash site.


CAUSE OF CRASH: Pilot error. Continued flight into terrain after pilot lost orientation of the aircraft due to sun blindness while flying directly into the rising sun. Proper flight planning would have avoided flying the aircraft north and east of the airfield preventing him from needing to navigate the aircraft into a blinding rising sun. Moron.

CRASH PHOTOS:



The crash site is approximately 150 yards behind the church in an open field.


The debris field is limited. 
All of the a/c parts are accounted for.


The tail section of the fuse was still connected to the forward part only by the ESC wires. The motor was still at flight idle.


Starboard


Port


The prop shaft repaired the day before separated forcibly from the motor. The motor was removed from the a/c for inspection. 
It is in excellent condition other than the broken shaft.


The fuse is fully severed at the passenger seat. Top down.


Port


Starboard


Underside

The aircraft is awaiting parts, but most of the original parts will be reused until the pilot learns to control the aircraft properly. It is easily re-buildable (thank goodness for foamies). The pilot is excited about repairing the a/c due to the challenge it presents. He is still smiling and telling anyone, "Did you hear that? 4 minutes of fully controlled flight!"

CopterX Arises, But She Is Parked...

Fixed the CopterX, but I don't intend to fly her for a very long time. I rebuilt her and set up her CCPM again. The main shaft was bent, and you can see the flybar is all wacky, but curiously the feathering shaft was entirely fine.  I want to recheck the tail before I fly her again, but as I mentioned, that will be a while. I took her AR6100 out and put it in the Cubby, which flies very nice with it!


So, all my helis are up and ready to fly, except as noted, the missing receiver from the CopterX.

Working on Radd's School of Rotary Flight. Planning to put up a video series of the steps as I do them. I think I am up to Battery #7.

Here's the CopterX with her receiver laying beside her before I swapped out the Exceed one in the Cub.