The flying monkeys got me...

Helis and fixed wing

AMA 957918
IRCHA 4345
AMA Intro Pilot Instructor

Sunday, September 17, 2017

All came home

Sunday's are quiet at Wagner Field on top of Mt Hudson, and today was no exception. Though today I met Clarence White, a core club member and groundskeeper. I had a pleasant visit, but by the time I had arrived he was closing up having been at the field since 8am. It was foggy when he arrived, which is why I didn't come out until around 11. He watched me fly a bit, then headed home.

The air was dead calm, warm and a bit humid, and when there was a light breeze it was a crosswind easily managed. I have been planning to bring the Waco 26cc out, but feel I want some more stick time before I fly my favorite plane again, and today is Patriots Game Day, had to be home by 1. It was gorgeous out... it would have been perfect for the Waco first flight of the year.


I started with the recently repaired HK Sbach. I had recently rebuilt the hard point for the landing gear, and she held together well in a few light crosswind landings. I flew one pack at the beginning and the end of my day. She flew perfectly, and I dialed in my DR and Expos, and flew her with the HK Orange 3 Axis on and off.  Truly easy and enjoyable aerobat!



I hadn't even run the engine this year on my Sukhoi SU-26 10cc, but she started up, and with a little idle servo end point tuning, ran and flew flawlessly. She also has a HK Orange 3axis reciver, and I flew her with it on and off, practiced approaches in calm and light crosswinds. I flew 3 20 min tanks flawlessly. I had to figure out how to bring her down very soft, and raise the throttle a touch; she would often quit on touchdown. I brought the gear a bit closer together raising the prop up a touch, and worked the throttle, kept a bit more speed on at approach and touchdown, and kept her running. Fun working this all out! These Orange 3axis stab systems work really well, easy to manage. My Spektrum Alpha6 systems remain troublesome... more on that later. Not a fan...


In the end, 1.5 hrs flying, everyone came home whole. Great day of flying!

Sunday, September 10, 2017

Same as it ever is...

Its been a windy summer. I'm talking 8-10mph with gusts to 20. Today was temperate, not so windy, but a tad gusty. I went flying anyway.

I headed out to Misfits in Auburn. Rules prohibit flyi g without anyone there, but for small park flyers, which makes it a poorly attended field. Today was no different. Despite being 11 on a Sunday, no one there. I flew the Sbach once, but the winds were too much, and I really wnated to fly my Stik 10cc gasser. I decided to head over to "Mt Hudson" (SNHRCC in Hudson. No one there either, but better conditions.


I flew the Sbach, and on a simple landing the gear came off. I know they are not attached well... not sure that I can make it much better without rebuiliding the entire under carriage. I may have to. She did fly pretty darn well, though.


The Stik flew well, but the idle is still a bit high. She flew without needing any adjusments, so that was a change. I decided to try and tune her better for a lower idle (can't change the low end point to make it better). Made one change and she stopped running correctly. Had to start over, taking about half an hour. I think I have found the balance with a decent low idle and max power, between the neeldes nad end point, but she just doesn't sound right. All in all, flew three 20 min tanks before I got hungry enought it was time to quit. Enjoyed mynown private field!



Sunday, June 11, 2017

I knew it could...

I was having problems getting the usually reliable RCGF 10cc to run when I went out to Hudson the other day. I knew that it could run the 13x8x3, and now that it wasn't I was determined to get it to.

I took the engine off The Stik this morning, removed and completely took apart ths carb, from Hi-Lo needles, to metering needle and its lever, cleaned and adjusted everything, using GumOut and WD40. Removed and cleaned the butterfly in the fuel intake to the cylinder, cleaned the flapper valves in the Walboro carb, I cleaned the piston shaft and the cylinder, I cleaned the spark.

I set the needles about 2-3 turns out and she started up after spitting out the WD40. Tuned her in a few minutes and now she runs smooth and sweet! I did have to move the low throttle end point down to 22% (last time it ran well it was 35%). I had to work the low end to keep an odd thing from happening, I have noticed, maybe just this engine, but if I run for a few seconds at half throttle, then pull quick to idle, she would slow, stutter and stop, even thoguh the Hi and Lo needles were set. If I set the idle a little higher with endpoints, moving it from 35 to 22% in this case, she would not stutter, and if she did would return to idle no ptoblem. I had to work this end point down to find a nice medium. The idle is  a bit fast for paved, but grass will be no problem.

Too gusty to fly now, work for three days, then house closing, so it will be some time until I can fly again... When I can, Das Stik is going up!

Wednesday, June 7, 2017

Good day, not as planned.

Headed out to SNHRCC in Hudson today with the 30cc MXS-R, the 10cc Stik and the newly rebuilt HK EPP Sbach. I started with the Sbach. She flew fine, but with the 3-Axis on it flew odd. A recheck of the settings mysteriously showed the aileron response on the stabilizer were backwards. I had tested it extensively when I set it up before bringing it out. This is quite odd. Set it right and really didn't notice a difference with it on.


I flew a couple of batteries. Even witth a little wind, she flew so much better than last time we came out here, stabilizer on or off.

I brought out the 10cc Stik. She had been nicely tuned, but for some reason she wasn't accelerating consistently.  She would quit on some run ups, or bog down. If I got her to run well, she stops when I pull the throttle back. To get that not to happen I have to set a high idle. I spent an hour on it and couldn't find a sweet spot. A guy named Ray (clearly a skilled builder and flier) was there and I asked him for help, He pretty much did what I did and couldn't get it to run right. He thinks the prop is too much. I have flown this prop before, and it ran fine. It also runs fine on the Sukhoi with the same engine (I checked). I wasn't going to fly her today. I decided to wrap it up for the day having wasted so much time. Ray and another guy were flying their Veloxities on the gas side and I didn't feel like asking them to go to the electric side so I could fly the 30cc.

I like 3 blades, not just for the look, but for the thrust. The loss of efficiency is insignificant compared to the increase in thrust, which is why full scale prop planes use as many blades as they can.



I drove by my new house in Chester. The closing is next week. It is on the way to Misfits in Auburn, so I thought I would stop there, then head over to Misfits.

I can't fly anything bigger than a park flyer at Misfits because I was by myself, and its too small for the 30cc anyway. I flew a couple more batteries in the SBach. I am sure there are occasional delays is response with this receiver. Since I am not really impressed with the 3-Axis system, I think I will just put a regular receiver on her. She was a lot of fun!


Headed home and took the 10cc Sukhoi out to the garage, and fired her up with her 3-blade 13x8x3 prop to see how she ran with the 3-blade. She ran fine. I changed the Stik's prop to a 2-blade 14x8. She ran pretty much the same as she did at the field. I still could not tune her. I took her to the bench, pulled the motor and cleaned the carb on both sides. The screen filter had a little dirt, but nothing amiss. I put it back on and started her, still can't get her to tune right. I gave up for the night. Since its not the prop I put the 3-blade back on, and will tune her with it on. I am at a loss. I may have to settle for having to set her up best I can and be careful making fast changes on throttle. I can find that spot, but will need to be ready to dead stick her. At some point I may send it to RCGF-USA to see if they can figure it out. There are a couple of things I can do still, clean the spark, change the carb flapper pump. I looked for the single needle carb, but I must have tossed it. I'll keep looking for that too.

Thursday, June 1, 2017

HK EPP Sbach rises!


Its been a productive couple of days. Winds kept me from flying, moving preps kept me busy, but I finished rebuilding the EPP Sbach! She looks pretty good. Close up she has some scars, but really I am glad that I rebuilt her.

I noticed a few things. I had to replace the plastic control arms on the elevator and rudder. They were stripped, and the elevator servo was acting the fool. I wonder if these two things caused the crash? I installed a Spektrum AR600 rwciver I have and it burnt out two replacement servos before I realized what was going on. Threw it out. With the servo and horn issues as possible causes for the crash, not wanting to throw awya $25, and now lacking a reciever, I dug the HK Orange 3-axis Stabikizer-DSM2 reciever out of the trash and installed it. I also noticed that the gain settings on this reciver were way too high. WTF? I installed it, reset everything, retested the responses and dialed the gains down to a bit more than 50%. Everytning seems fine!

Ths spinner is wobbly. The prop shaft is true, and the blade is true, but the spinner back plate is wobbly. I may change it out before I fly her.


Set the reciever a bit aft of the carbon fiber wing tube to minimize signal blocking. I wanted the antenna pointing aft to prevent the battery from blocking the signal.




Before painting the black. I used a water based brush on paint.



All done and pretty!

Tru-Turn Spinner. Oh my...

Is this not something else?

I worked with Wendy at Tru-Turn to get the right adapter and spinner for my RCGF 10cc engine on the Stick. Wendy helped me by checking which adapter would fit, and pointing me to the right spinners.  Thanks, Wendy!  I got a TTH-1250-A 1-1/4" A-Style Prop Hub, and a TT-0140-A 1/4-28 W/1/4" Adapter Kit for the RCGF 10cc. Fit perfectly, of course.

I have always wanted to put a bullet spinner on her. I have a Tru-Turn spinner on the 26cc Waco that I bought last year. These spinners, while not inexpensive, are worth every single penny.  I had to trim about 1/4" off the spinner screw, but that ain't no thang.

Would ya look at that?



Wednesday, May 31, 2017

HK EPP Sbach Bebuild

Finally decided I was ready to rebuild the HK EPP Sbach I crashed back in April. She became uncontrollable and she crashed. I have to suspect that it was the HK Orange Reciever-3 axis Stablizer as there really was no other reason for it to fly the way that it did. A few weeks later the Edge 540, also equipped with that receiver-stabilizer combo was delayed responding to an up elevator command and came in a bit hard. I don't know that I will trust these reciever ones anymore, and threw out the one in the Sbach. I will fly it without stablilization for now. I just hate to throw them away, but its not worth the worry.


I collected all the pieces and disassembled the motor box. Looked over what I had and started putting things together. I missed a few pieces that I didnt recognize just where they went in the puzzle, which lead to some sequencing errors, but I was able to get a nice frame together.



The gear hard point after the major pieces were CA'd in place.
Front.



Back.



Epoxied wood into the front frame of the gear hardpoint to add strength.
The front fuse frame is also drying but thin CA. 



The epoxied wood supports. I laid up a lot of epoxy behind the wood to strengthen the puzzle pieces. There was a center piece I missed. I will look tomorrow at dropping a piece in from the top, but I think this is enough support.



Since the back of the hardpoint wasn't so broken up, I only added support to carry energy from the hardpoint into the fuse. If this comes out again the aircraft will not survive.

Tomorrow I will work on getting the motor box onto the fuse. I am gluing the EPP where its cracked and split, but its going to need some more support, and I am not sure how I am going to paint it. Not sure if EPP can take rattle can paint? I don't have air paint... some research to follow. I am sure I can find some brush paint.

The gear hardpoint went back together better than I expected. I am a little anxious about getting it to fit its tear away points, and know in the end this repair is adding some weight that will affect its CG and flight characteristics.

Either way, we are on our way.