This is your moment, but if you are following along in the series, then you know that weve finished the build, and the next thing we got to do is put the props on and do the very first flight known as the maiden thats. What were here for im, joshua bardwell youre, going to learn something today for now, though, i just want you to look at this lettering. Thats embossed on the top of the propeller, and one of them is going to read 51477r and the other is going to read. Just 51477: no r thats what you need to identify youre going to have two that are 5 1, 4 7. 7 are and two that are 5, 1, 4. 7. 7. No r for this quadcopter were going to put the r props on the front left and the back right, thats, the r props and the not r props on the front right and the back left. And if you want to know why. I did that. And when you would do that and when you would do anything else, go watch the propeller anatomy for absolute beginners. Video linked down in the video description next were going to put the nuts on the motor shafts and believe it or not, theres a way to screw this up like what are you talking about bard? Well, i put putting nuts on bolts for my whole freaking light check this out. These nuts are whats known as nylock nuts, and they have a nylon insert thats.

What this little white thing is here, and the purpose of that nylon insert is that it squeezes down on the motor shaft and it keeps the nut from backing off. If the prop is subject to some kind of shock, like you hit a branch or something or in just normal vibration, these nuts can work their way loose and theres various ways to solve that problem on big aircraft to lock the nuts in various ways. But in these little aircraft we just use these nylock nuts and the reason thats causes a problem for some people is that there is resistance when you initially go to tighten the nut down about two or three times a year. Somebody posts this picture on reddit or facebook, and they ask is this right because, like the prop is loose that cant be right, but the nut sure seems like its all the way tight and what you got to do. Is you got to get in there and youve got to tighten it down the rest of the way and the first time you do it. It will take a little bit of force to cause that nylon to deform, but then then itll be fine and the next time, if you have to loosen that nut again. The next time you tighten it down itll be a little bit easier. Eventually, the nylon just wears out and it doesnt hold anymore and then your nuts sort of come off while youre flying dont.

Let that so. You should see that the nut is all the way cinched down, and you should see that if you take and you try and like wiggle the prop while holding the motor bell, you should see that its relatively secure dont over tighten it or you can like the Uh crop can get stressed and actually shatter, but you definitely want it tight enough that the prop doesnt easily move. So maybe uh. You know another eighth of a turn after it. After it gets all the way down. It makes contact as much as a quarter of a turn there we go next up the battery strap with the battery strap to insert the battery, strap youre, going to take the velcro side and turn it down and then youre going to pass it through uh. Here, underneath the top plate and above the flight controller, you might find this difficult to do but make sure that you dont, like accidentally, catch any of the wires. If you put the battery strap underneath one of your wires itll pull on it and itll. That wont be good, so were gon na put it in like that, and i dont think this kit comes with a second battery strap. But my opinion is that you always want two battery straps theyre more than twice as strong as one so im gon na get a second one, and if you have a spare, i would use it. The second battery strap were gon na put right here again.

Be careful about your wires, be careful about your antenna. Cable dont accidentally snag that stuff, and then we need a battery. Now. Im gon na show you how to mount your battery, but i wan na show you something else. First, this balance connector flopping around loose. You need this to charge the battery but oftentimes, while youre flying the balance connector will get hit by the prop because its just sort of flipping around there one thing you can do is you can pass the balance connector up through the main xd60 lead, and then It may keep it in place. The other thing that i like to do is get some of these big honkin rubber bands, and just put it like so, and that will keep the balance connector out of the prop. The other trick that i use is. This is a fully charged battery when i finish flying and take the battery off the quad. I real quick just like that. This is a used battery. Then after im done charging, i just put it back on and it is ready to go when you mount the battery on the quad. You must give it some thought, because if you mount it carelessly, you will end up chopping. Your battery lead and potentially ruining a perfectly good battery and those things are not cheap. Well, if i do it like that, its going to kind of get pushed back here – and i kind of like that – and this one is going to get pushed back and maybe the prop would hit it.

I really like that to come forward if we come over. The top thats not ideal, but at least now this wire is being pushed to the front and out of the way of the prop so thats good. That might be this thing to do now. You get this just this loose bit of cable flopping around out here. I dont love that i think thats. What im gon na do. Im gon na turn this around backwards and then were gon na cinch down this strap good and tight down this one good and tight and yeah okay, Music and then yeah. I just passed that, like so oh yeah, i like that thats, not the best, so the problem with this approach is weve got this big loop of cable here off here on the rear and it could get snagged by something and thats not ideal. Lets see if we can come up with a better way to do this Music. If i just take this to the side here, oh yeah thats going to be the one thats, not bad. This is probably not going to end up in the prop, because of my zip tie will keep it out of the way this is relatively secure. I can even move that forward a bit. Well, i dont love that thats a bit of a mess. Can we do this thats, better thats, better Music? I think thats, okay yeah! So now we dont have any sort of loose wires waving around.

We dont have any big loops of wires. Everything is secure by the way as youre cinching that down make sure that youre not putting tension on the wires and pulling on them. Because i mean some of this is going to move in a crash and if its already got tension on it, then you could damage something when it moves. The next thing were going to do is: grab our controller power it up and plug on the battery plug. In the battery, welcome to http and were gon na do an arm, disarm check and a failsafe check were gon na. Do that check with the props off with the props off and the battery plugged in im gon na arm no uh a little gotcha here with er express lrs if you power up the receiver first before the controller after about 30 seconds, the receiver will go into Wi fi mode and then youll have to power cycle it to get it to bind thats better. Now then, were going to try, arming and disarming good its working as expected. The next test were going to do, is were going to arm and then were were gon na power down the controller shutdown model still powered yes, and the motor should stop within just a few seconds and itll begin beeping. That means that your failsafe works connect correctly. That means that if you run into any problems and you fail safe hit, it will not just fly to the moon and disappear now that thats done were going to put our props back on, and we can actually do our very first hover test see there now Were going to do a hover test for the quadcopter and its not as simple as just plug in the battery arm, raise the throttle and go to the moon because thats? What might happen if anything has gone wrong, especially when youve just built a new quadcopter or if youve been working on like you changed a motor or something there are a couple theres, a way that i like to do it.

That will keep you out of trouble, and the first warning i want to give you about a hover test is: do it outside. I get videos from people and theyre like oh im, trying to get my new quadcopter to fly and somethings wrong and theyre like in their dining room or in their basement thats how you get a hole in the ceiling. Folks, okay, youve been warned all right, so the first thing were going to do is were going to lower the throttle with the throttle. All the way down were going to flip the arm switch were gon na see. If anything bad happens, nothing bads happening yet. The next thing were gon na do is, with the throttle. All the way down were gon na push the roll stick slightly to the left and the right and basically tilt the quadcopter Music, and it basically behaved as it should. It got a little a little bouncy there, but it basically behaved as it should. I disarmed it because it was kind of starting to bounce and rev up nothing bad there. It didnt, like pop up or flip over, were gon na arm. Do the same thing on the pitch axis: it really wants to fly, doesnt it and were gon na do the same thing on the roll axis or the yaw axis. Okay, well its a little more jumpy than i um would really prefer it to be im sure its going to fly just fine, but basically thats.

What you do is you tilt? It left right front back and on the yaw axis and if it does all those things pretty normally, then we are okay to take it off and fly it during this preflight check. There are some things the quadcopter could do. That are sure signs that you should not proceed. Something is wrong, do not raise the throttle and attempt to fly and, for example, if you push on the roll axis left or right and instead of lifting up one side as expected, the quadcopter kind of just squats – and maybe you hear the motor speed up. But it doesnt actually lift up and tilt, and so you push the stick a little more and then it still doesnt lift up and tilt something isnt right, its not moving the way its expected to move. The other thing to look for is if you begin to push the stick and the quad goes and pops up in the air and disarms, or maybe it flips over something isnt right, youve got a prop on wrong. A motor is spinning the wrong direction, or something like that. I also want to point out that there are some combinations of problems that can cause the quad to appear to work correctly for the pitch and the roll axis. But not the yaw axis so always check pitch and roll first and if pitch and rolls seem to be working correctly, check the yaw axis, where you move left to right like this and if it works, if it checks out, if it moves as expected on all Three of those axes then youre okay, to raise the throttle and take off and fly the quad.

The other thing i want to demonstrate for you is how to use turtle mode to flip the quad back over when its crashed and its upside down so ive set. It upside down there and what were going to do is again with the quad disarmed were going to flip. This switch to the all the way towards us position and that is going to activate turtle mode and then were going to flip the arm switch into the arm position and what well see is itll, say armed, but nothing will happen the now. At this point, we need to think about which way we want to push the quadcopter to flip it over and a lot of times when youve crashed. The like two of the props will be down on the ground in the grass and wont be able to spin and youll want to push it sort of the other direction. But in this case it looks to me well, it looks like on this side of the screen. The props are touching the ground, so were going to push to the left. Here we go so im just going to take the roll stick and when i do that. Well, see that just the left side motors will begin to spin and flip the quad over or i could go, could go that direction and im just going to give it a little bit of a push to flip it over. You can actually fl push any direction left right front back and on the yaw axis.

This is super useful for flipping the quad over if its crashed and its upside down and its super useful for getting the quad out of trees. But do be careful if you kind of go bonkers when the quads in the tree bout banging the props against branches and stuff, you can blow the esc, so you might want to be a little careful with it and as we go into this flight, i just Want to congratulate you for completing this challenge and say how proud i am that you have gone through it and how uh honored i am that youve gone through it with me uh. If youve accomplished a maiden flight, you have accomplished something truly significant. This is an incredibly challenging hobby and the challenges just keep coming, but you overcome them one at a time one at a time and in between all the time you spend working on the bench you get a few transcendental moments of joy, youre, flying and flipping through The treetops – and that is what it is all about – um im gon na – let this flight go out. Youre, welcome to keep watching it, but uh id kind of. Rather you just go ahead and get out there and go fly. Go fly your quadcopter happy flying uh.

https://www.youtube.com/watch?v=D_P-7Cw1y7E