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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Tue Sep 04, 2018 8:32 pm 
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Posts: 1868
Location: Bryan, TX
Well I guess there is a reason why everyone mounted their flight controllers with the connections facing the main shaft...

I'll take off the RX tray and see if I can just flip the plate the Brain2 is mounted on around.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Thu Sep 06, 2018 8:08 am 
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Location: Bryan, TX
Last night I worked on the wiring in the back of the Synergy 516. I tried to just turn the plate that the Brain2 is mounted on around but there wasn't enough clearance to get the servo leads in without binding. So I popped it off and just used a new piece of double sided tape to put it in the right place. I had to move some wires around to get everything to fit. If all the wires were on one side, then there wasn't enough space to get all the wires under the RX mount.

I also installed the servo horns. I did this by opening the Brain app while I powered everything with my 2S LiPo for my DeJaVu from last year. This apparently is a bad idea with the HW 100A V3. Apparently it back feeds the BEC in the ESC and after a few minutes I began to smell hot electronics. Apparently if you go under the BEC set voltage then you don't have this problem and my RX pack was probably slightly above. The ESC was warm but I could easily touch it so I'm hoping it is OK.

After realizing this, I unplugged the ESC and finished with the RX pack. After I finished the servo horns, I plugged the ESC leads back in and took the 516 outside and plugged in one of my 6S packs for the PROTOS. Everything seemed to work fine and I'm hoping the BEC in the HW 100A V3 is OK.

I plan to do the rest of the setup with a 6S pack plugged in to the ESC and hopefully that will be enough run time to tell if the BEC is OK or not.

On the bright side, everything fits under the canopy now though.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Fri Sep 07, 2018 10:30 am 
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Joined: Thu Aug 25, 2011 9:14 pm
Posts: 1868
Location: Bryan, TX
I got the linkages to the same lengths last night and installed the servo screws with loctite. I found it was easier to just pull the servos off of the mounts to install the screws than to try to get them in the tight spaces.

I also added the fan to my ESC. Not sure if I'm going to leave it there or not.

I am taking the day off from work today so I did a little for the 516 this morning. I have the radio setup, the ESC calibrated, the rudder pushrod setup, and so all I need to do is fire up the SOKO virtual main shaft and check the CG.

I should be able to go through the SOKO setup today.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Fri Sep 07, 2018 10:35 am 
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Location: Bryan, TX
Oh and I also found this podcast where Section 336 and the differences between the modelling community and the commercial drone alliance is discussed with a lawyer who worked with Taylor. Some really good information in there and the AMA needs to take notes in my opinion.

http://rcroundtable.com/podcasts/mp3/RC ... e_63_1.mp3

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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Fri Sep 07, 2018 8:31 pm 
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Location: Bryan, TX
I finally got through the Brain2 programming this afternoon. I needed to change one of the blade grip turnbuckles to get close to zero pitch and on the second one got too out of wack. I had to go run some errands so I just redid the entire setup in the Soko app from the start after I rechecked the linkage lengths.

Getting the linkage lengths close on the second go around was easier and smoother. So the ESC is calibrated, the rudder is moving in the right direction and correcting in the right direction, the swash is moving in the right directions, the pitch is set close to 12 degrees positive and negative, and the cyclic is close to 10 degrees.

I also worked on the Byp Yak tonight. I got the elevator pull-pull setup but I misplaced some of the mini crimps for the wire and then also accidentally set one up too short. It's foam so I'm not too worried about it. My goal is to do the ailerons tomorrow and then I just need to find a battery.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Sat Sep 08, 2018 4:17 pm 
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Location: Bryan, TX
Good club meeting with good turnout this morning. Went longer than normal because we are dealing with some theft and the club doesn't have the membership to raise money for a new mower like we did less than 10 years ago. We have gone from mid-40's in 2012 to the upper teens and thankfully now mid-20's for club members. Lack of a local hobby shop and interest in the public I believe are some of the problem.

I showed off the 516 and tried to fly it. I thought I checked everything yesterday but I neglected to check the aileron movement and it was reversed. The spool got a little harry but thankfully I was able to right it and hit throttle hold before it left the ground and destroyed itself. I would've been really disappointed.

I brought it home and went back through the setup for a third time and everything was where it should be except the cyclic numbers from the SOKO app and what I was reading. So after I finished I broke out an old pre-SOKO too and checked the pitch and cyclic. I'm about 12 degrees pitch and 10 degrees on cyclic. And my apologies for the poor picture, it's raining outside.

The only thing I can think of is maybe I needed to be a full pitch but I'm not sure.

I also removed the fan off of the ESC.

I also took the DeJaVu because I knew one of our resident pattern flyers (though he hasn't done much in the past few years) was going to be at the meeting. He's a CC user but he knew someone that does the Jeti's so we got on the phone and got it setup properly in the DeJaVu. He also game me some tips on proper orientation and helped me get the right CG. One interesting thing about the Jeti is that I had to create a throttle curve. Some of this was referenced in an RCU thread but not all the information that we needed was in that thread.

To setup the Jeti I needed to plug the program box in to my throttle channel to read the RX output. After we had that, we were able to put the numbers into the ESC and a few minor adjustments in the radio were needed to get it to arm but it's working and the DeJaVu returned to form.

I flew the PROTOS twice. The first flight was kind of boring as I was getting back used to it but the second flight was a bit more sporty. I got in to an orientation twice in the second flight that I wasn't sure about and went to center stick and then figured out what I needed to do. So it was nice to be capable of flying through problems instead of becoming anxious.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Sun Sep 09, 2018 2:45 pm 
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The Byp Yak is done minus setting the control throws!

I got the ailerons hooked up this morning and I might also need to tweak the top aileron linkages too. After that I got the ESC hooked up to the receiver and mounted it with hook-n-loop velcro pieces in the fuse.

After that I wanted to get an idea of where the CG was without a battery and it was dead on. So I got an idea to just use a spare strap and glue some of the loop side (battery has the hook type of course) of the velcro to the side of the fuse. Now I don't to find a battery pack and if I demolish it in 5 flights, so be it.

It's kind of nice to just have the Skeeter 40 to work on.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Sun Sep 09, 2018 8:59 pm 
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The step where I'm at with the Skeeter calls to glue in some pieces of 1/4" x 1/8" hardwood for servo mounting rails. I do not seem to have any on hand so I'll have to either order some or source some from a craft store in town. Seeing as how there are engineering majors in town, I'm going to source some from Hobby Lobby.

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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Mon Sep 10, 2018 7:47 am 
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Location: Austin, TX
Home Depot and Lowes usually has some decent selections of birch dowels and square stock too. That's where I usually go, since Useless Town (or Hobby Frown, depending on my mood) seldom has what I need.

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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Mon Sep 10, 2018 8:15 am 
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Location: Bryan, TX
Interesting...

I might have to see if they would have some hardwood in that size.

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