#matek f405 wte mounting problem

31 messages · Page 1 of 1 (latest)

calm pendant
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why are you putting a wing FC into a quad frame?

jaunty grove
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There isn't even a standard rear mount pattern on this frame. Just looking at pictures, no, there will not be enough room in the back for you to fit the flight controller you've purchased.

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You'll find there are a lot of things not carried by local shops. That doesn't mean you should purchase whatever they happen have

narrow patio
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bruuuuuuuuuuuuhhhhh

jaunty grove
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I don't know how to say this more plainly

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There is not enough space

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The FC you have is 44mm x 29mm

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The space in the back of your frame is like, half that

narrow patio
clear gale
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U do know if it sticks out it will snap in half on a hard landing

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Return it

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And buy parts meant for a quad

jaunty grove
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If you do not attach the flight controller to the frame rigidly--and I mean with stack screws--you will end up with a quad that does not fly correctly due to faulty gyro data. At best, it will be sloppy to control, and at worst it will be completely uncontrollable

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I cannot stress enough just how much this flight controller is not going to work for you

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You bought 25" wheels for a car that takes 19" wheels. It doesn't matter how expensive they are or aren't or how easy they were to get

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And even if you do mount this thing and even if you do get it in the air, @clear gale is correct. There is a very high chance this flight controller gets easily destroyed in a crash because it's sticking out and exposed. PDBs are not designed for impact forces

clear gale
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Pcbs are hella easy to break lmfao

jaunty grove
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Inav's filtering is not nearly as good as betaflight's. And it isn't rigid enough to prevent oscillation in the sub-100Hz range, which is where actual movement happens

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Meaning you can't filter out junk without filtering out actual input

jaunty grove
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When the FC is not rigidly attached to the frame, the momentum of the FC itself will lag behind the movement of the quad. The softness of the tape you use to mount it will also dampen the natural oscillations that will happen between the FC and the frame, lowering their frequency significantly to the point that they are mixed in with the actual movement of the frame.

By rigidly attaching the FC to the frame, you eliminate the momentum lag, so the gyro sees the frame movement in real time. Any vibration is kept at its original high frequency and can be much more easily filtered out

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Now you may ask yourself, "If all of that is true, why do proper FC stacks have gummies between them and the screws?" and that's a fair question. For starters, a normal quad FC has a weight of a few grams at most. The WTE stack you have has a weight of at least 22g. So with a normal FC, there is a lot less mass to throw around on the gummies. Second, and more importantly, the gummies are squished in place and fixed onto the stacks screws. Yes there is a little movement allowed because they are flexible, but it's generally just enough to filter out high frequency vibrations that were damn-near impossible to eliminate when the FC is bolted straight to the stack screws. With that said, the gummies aren't always required IMO, I have a couple builds that fly really well without them

jaunty grove
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Smh

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You do you man

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I'm going to guess hot glue isn't going to stick to carbon fiber. Even if it does... it's fuckin' hot glue

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Like, what?

ashen crater
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maybe you can 3d print an adapter to a standard quad mounting layout

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im pretty sure that the bolts holding the pbs together are m2

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idk how you will fit it though

narrow patio
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you are a melon

ashen crater
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lmfao

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good for you lol