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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Sat Nov 04, 2017 8:33 pm 
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Location: Bryan, TX
Well we had a good club meeting this morning and a few of us stayed around afterwards to fly.

I got 2 flights on the EF Edge before the winds kicked up and some bad looking weather came in. I am loving the SEF and I got over 12 minutes on each flight burning up some fuel.

I'm kind of a fan of the engine logo I came up with. Might have to get another CF prop to help match the black carbon fiber...

I'm also thinking it's time to invest in some new bungee cords. These are 12 years old so I've gotten my money's worth I think.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Sun Nov 05, 2017 7:57 pm 
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I got the throttle pushrod setup today. It took way longer than it should have but these things always do. I ended up robbing a pushrod out of my old Tiger 2 to get it done and used a ball link from a plane I used to own.

The good news is that the motor works and ran well. I'm still going to fly it a little bit on the Sabre but I am also thinking about what I could put the motor in now that I know it works. This is primarily so that I can take the plane along with my gasser or the DeJaVu without having to work out some fancy packing. The two candidates right now are the Tower Hobbies Kaos 40 and building a Sig Somethin' Extra.

The Kaos would allow me to fly in Senior Pattern but the Sig would be a fun fly type plane and I had one in the past. It's a pretty easy, quick, and straight forward build.

Either way our son will most likely be here in the next few days if I had to take a bet and I'm going to think about what I might want to do for a plane. Guess I should also make sure I can get a couple tanks and not have any catastrophic failures or problems.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Mon Nov 06, 2017 9:47 am 
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Location: Austin, TX
I can highly recommend that Tower Kaos, it's a crazy value and flies like a Kaos (which is to say: really really well).

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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Fri Nov 10, 2017 11:29 am 
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On the pattern plane pushrod issue, are you elevator servos both in the stabs? Same position (mirror image I guess)?

T


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Fri Nov 10, 2017 11:37 pm 
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exfokkerflyer wrote:
On the pattern plane pushrod issue, are you elevator servos both in the stabs? Same position (mirror image I guess)?

T


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They are both in the stabs and should be a mirror image. I will look tomorrow.

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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Sat Nov 11, 2017 12:20 am 
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Okay, so the arms should be at 90 to the hinge line and the rods should be the same length... if the servos are in the same relative position and the horns are as well (certainly better be), the pushrods at different lengths is certainly a problem!

I never used the "glued on clevice" rods, but it's a common method. If they are the right length, they work great. I always used something adjustable even though I never had to adjust it.

If you don't already, use a couple of long carbon rods and tape them to the elevator so that they meet at a point behind the rudder. When you redo the linkage, this will help you adjust them to dead-nuts-on.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Sun Nov 12, 2017 6:52 pm 
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Sorry for the late reply as my son was born on Tuesday and it is a big adjustment in terms of getting things done.

As of right now I'm glad I finished up putting the YS 63 in the Sabre because we have a fly-in on November 18th where the entry fee is an unwrapped toy for Toys-for-Tots. I will probably just take the Sabre and fly it there to get some time on the motor and if I end up dorking something, it's a plane with little emotional attachment.

Here are some pics of the stabs. It may be hard to see the elevator servos since the rudder servos (this DeJaVu has a split rudder) but they are in line with them. The horns appear to be in the same position too.

What I plan to do is to figure out which control rod I think is closest to 90 degrees and change out the rods one at a time. I plan to match the first swap to the old rod using the carbon rod trick and then measure it to adjust the second elevator servo. I also have the supplies to change out the rudder and aileron linkages.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Tue Nov 14, 2017 9:51 am 
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Congrats on your son! Hope everybody is doing ok. Kids are an adjustment for sure. Oldest is 26, youngest almost 20 months.

If I were to tackle this I would remove both pushrods and put the new ends on the horn and the servo arm. Servo arms should be at 90 degrees. Start by taking out all subtrim and get them as close as possible with rotating the arm. Usually you can get one really close. After I get as close as possible without subtrim, add it in. I would cut the carbon rod to approximate size and insert. Like I said, I haven't used this method, but it's similar to other methods I've used and these steps and methods still apply. The rod should slide into the clevis or fitting easily but tight enough to hold when glued.


Attach the carbon rods to the elevators with tape. The rods should be able to meet each other without touching behind the rudder. I usually use about 12 inches.

With more tape, secure each elevator to be zero yo the stab and more importantly, zero to each other. Secure with tape. This could take a little bit of time, so don't rush it.

So, you now have the servo arms at 90. The elevators at zero to each other and the stab. The rods are in the clevices... once I'm satisfied that I can not get any closer, I put a drop of glue in each clevice to secure it.

If the servos are at 90, elevators are at zero... it has to be correct.


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Tue Nov 14, 2017 6:44 pm 
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Cool, cool.

With the servos recessed and stab adjusters, I was hoping to leave them on and just go off of the old geometry that should be pretty close. This plane supposedly has won at the Nats by Rick Byrd so it should have been close.

I did end up having to pull of the stabs so my plan now is to get the horn as close to 90 degrees and put everything on the stab back together. I need to check my counter as it would be the best place to do this, but I am going to have to level the plane and match the incidence on the other stab before I do it so that I don't have to go through the trouble of resetting everything.

Lastly, I am a bit disappointed with the Secraft aluminum turnbuckles. Pictures to follow...


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 Post subject: Re: The Notorious B.E.N. Flying/Building/Repairing Blog
PostPosted: Tue Nov 14, 2017 9:22 pm 
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Pics of the Secraft rods. They were OK going in but not backing out. I drilled one of the ball links for a 4-40 and that was OK but I'm still not a fan after the ends of some snapped off.

I started digging through my stuff and found some Hangar 9 Titanium turnbuckles from old planes and also some that came with my Extreme Flight 88" Extra 300 when I had it that are 3mm threading and a little shorter than 2.5" so I will just order some 4.5" Hangar 9 titanium rods and some more ball links and be good to go. I have enough stuff that I can work with until it arrives.

The Hangar 9 stuff is also less bulky so the weight is the same.


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