Jonathan Wells
Active User
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Magnus Build thread - TJIRC
- Thread starter Jonathan Wells
- Start date
I was going to say, I usually get them as close as I can and then adjust the subtrims to dial in the final bit. It should be a small correction. If it is big, then go back and adjust the horn again. I use a FrSky radio, and should the plane have a geometry issue, or even unmatched servos or brands of servos I can dial in the mix to make them preform identically. So I have become a little used to that for older planes. For new planes I do my best to get the geometry perfect mirror images.
Jonathan Wells
Active User
Plane #1 but with a new fuse, a friend crashed it on landing in some bad rotor....
The X08+ is much taller than the standard X08. The X08 is plenty strong for the elevator.
I'm never shy about sanding on gap seals of this type. I want to make sure they can not grab and get stuck, and many planes will need some sanding to get go travel for the flight surfaces.
Now for noise, if you want the noise, just bust out all of the gap seals. A local pilot does this as he had lost a few high dollar planes to stuck gap seals over the years. He just does not trust them anymore. Anyhow, his planes make the best noises!! Yes, he gives up a tiny bit of speed, but the glorious noises!! LOL
Konrad
Very Strong User
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Konrad
Very Strong User
Am I reading and seeing that correctly, that nice epoxy fillet is on top of a sticker? With my landing that won't work as the sticker will peel away from the tray allowing the servo tray to move around.
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SC_Pilot
New User
If that's all it takes... I'll do a few flights with them in first and out they'll go! ?
SC_Pilot
New User
Did not know that. I just got 5 of the same servos so if I built something else in the future, they'd all match.
Diceman
Moderator
I have been working slowly getting my Magnus built. Trying different ways to get bigger servos in flaps to make it stout for DS and trying to get full 90 degrees on the flaps, but to achieve this I have a slightly longer servo horn that I am not going to be able to keep under the cover. I am still playing around with the geometry of it to see if I have to (and of course transmitter programming) but I might end up with the longer horn at this rate.
The fuse is done (very easy) but I changed the build a bit by adding a pushrod support just behind the wing in the fuse to help stop and flex in the 3mm pushrod when hitting the higher G’s. It worked out great.
I purposely moved the elevator servo as far forward as possible to be able to put a bit less weight in the nose and since I put in the support for the pushrod I am not worried about the pushrod being too long to flex. ?
The fuse is done (very easy) but I changed the build a bit by adding a pushrod support just behind the wing in the fuse to help stop and flex in the 3mm pushrod when hitting the higher G’s. It worked out great.
I purposely moved the elevator servo as far forward as possible to be able to put a bit less weight in the nose and since I put in the support for the pushrod I am not worried about the pushrod being too long to flex. ?
Attachments
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Jonathan Wells
Active User
Note: CG has now been moved back to 90. 5mm from wing LE, hands off inverted.
Diceman
Moderator
Thought I’d post up a short video of the first servo flap travel I got out of the Magnus with a full KST X10 servo and 4-40 Clevises. I am sure most of you got this just as far, I just haven’t seen anyone post their flap travel yet. I purposely want only down in my flaps, I not trying to use full span ailerons.
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Jonathan Wells
Active User
Flap/crow - 46mm measured from the Fuselage fairing to the flap TE.
SC_Pilot
New User
That's more travel than I was able to get out of the X08+ with arms that fit under the servo covers. I'll post a pic of my full throw the next time I plug in the battery.
Jonathan Wells
Active User
Assuming you're using the crossover method-Offset the flap servo arms forward to the LE by 20 degrees.
Diceman
Moderator
Nope, with the X10's instead of the X10 mini's that I wanted...…. the servo cover will not line up. this is one of my issues. I am debating my options.
Diceman
Moderator
Yup, they are offset.
