I wish I had known.... F550 purchase, build and first flights..

PilotHal

Real Pilot, RC's Too
Cool. We have same sort of washer here in the states. So I'll investigate that solution when I'm at that stage.
 

kloner

Aerial DP
8x5 graup have two or three rings on em inside the hub you can ream to.......the outtermost being 6 and 8mm being the maximum precision hole,,,,,, the 10x5 just come 8mm hub
 

Martyf1

Member
Hello!
I have been reading this thread with great delight!
I have been flying my mCPX for a while now using a DX8. I had a Blade 450 3D and hated it, so I eBay'd it. I had plans on building a TREX 550E DFC, but this hexacopter thing bit me in the butt! I don't have a lot of time right now to head down to the field and work with the local boys in the club to get a 550E with the BeastX going. So in the meantime, I wanted to be different and go the hexacopter route since I believe that I will stand a better chance of getting this thing built and in the air on my own. In January, when I have more time, I'll go the TREX route.
Anyway, I have one the way, a DJI F550 with the Wookong-M and the basic 550 landing gear. I can't wait to get it! I so appreciate the tips on soldering as it has been a while. So I broke out the old Weller 40W (WLC-100) and installed the chisel point. Tinned it; and twisted 2 wires together to see if I remembered how to solder. I had to keep the knob at position 3 - position 5 seemed way too hot! I successfully soldered two wires together. :nevreness: I bought flux from Radio Shack, but I'm not sure I will use it when soldering connections to the lower board (suggestions?)
Also, I'm curious which gauge wire to use to make the power lead cable from the bottom board? Also, what kind of connector do I use for that? I have never soldered a connector on to a battery before either. Is there anything to be careful about? I know, I shouldn't short the leads! But I'm not sure if there are any hidden caveats that I'm unaware of. Also, I'm not sure what size battery to use as well.
Thanks in advance for the responses!

Hal, I'm just a little ahead of you on the build. My 550 is flying but is still a work in progress. Your soldering iron is fine. Same one I have and worked great. Just keep the tip clean. Wire guage??? I started with 10 guage for my battery leads, but after I tinned it, it wouldn't fit into my 4mm bullet connectors. Had to file the end down. I've since gone to 12 guage and ec3 connectors. Works much better. Lipo batteries?? Google it and you'll get a whole bunch of very detailed articles and videos. Way more information then you'll want to know, but need to know. I initially went with some 3s 2600mAh and get about 5 1/2 minutes of flight time. I've got some 5000's on the way. In general, my build was a little frustrating. I felt like I was lacking a lot of information about the build and had to scour the internet looking for answers, especially programming the Naza assistant. But there is a wealth of information in these forums that should answer all your questions.
 

Martyf1

Member
I was more thinking of videoing it on your mobile phone or something, to show what it looks like from your perspective..
I know exactly what you mean, once you plug that lipo in, the clock's running and who wants to waste any precious time!? :)

mmurfitt, maybe I'll do that, thanks. You mentioned you're getting OSD. You going FPV? That's my next buy, but at this point I'm a little overwhelmed by the choices.
 

PilotHal

Real Pilot, RC's Too
Thanks for the response and the info martyf1. I just received my F550, landing gear and WKM today! Astonishing that it came in such small boxes!
Gonna start it tonight. Will hit the hobby store tomorrow for connectors and wire for the battery lead.
My mesh wire braid arrives early next week. Then I'll continue on with the ESC's. My goal is to get it done by the end of next week.
 

PilotHal

Real Pilot, RC's Too
Question on my solder pads

- Get a good soldering iron, the solder kit I had was good (bought especially for the job) but the 'iron' part was rubbish, or rather the tip of the iron was rubbish, I got a new 'tip' and it transformed its effectiveness. What took me hours to solder should have taken minutes.
If you're not used to soldering, or don't have much experience then practice. It's not too hard to solder, but it does take a bit of practice to ensure it's not too messy. There's plenty of YouTube videos on good soldering technique, I found this helpful:http://so.ee/nRd
Hello mmurfitt;
I received my F550 kit today and dove right in!
Can you take a look at the solder pads on my lower board? See attachment. I have the Weller 40W soldering iron set at position 3 on the dial. I properly tinned the tip. I applied the chisel point tip to the solder pads to heat them up a bit. I applied the solder and it flowed right on to the pad no problem. But some of them look dull, whilst some others look shiny like mercury.
Is this ok? Or did I do something wrong?
Thanks.
 

Attachments

  • Lower plate solder pads.jpg
    Lower plate solder pads.jpg
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PilotHal

Real Pilot, RC's Too
I'll take your 2 cents! No problem!!
There is a moderate amount of solder on the pads, it's just that some of them are dull and the others are shiny. I think I held the iron too long on the pad and burned away a lot of the flux - hence the dull appearance. I'm going to get a de-soldering tool at the local Shack and try again.
 

VytasandRio

New Member
If you are using tin/lead solder and your solder look dull or frosty, it may be crystallization due to insufficient heat.
 


Martyf1

Member
Hal, I'd try just reheating the blobs. They should reshape into a nice round ball. And I used my weller on 5 for the entire project, and once again, make sure your tip clean as a whistle.
 

mmurfitt

Member
Hal, I'd try just reheating the blobs. They should reshape into a nice round ball. And I used my weller on 5 for the entire project, and once again, make sure your tip clean as a whistle.

Yeah, I'd agree, in that a lot of heat isn't a bad thing, just don't hold the iron on for too long..! My soldering iron unit thing runs up to 450C, and I normally run it at 400C, which is more than hot enough.

@Martyf1 - My OSD arrived the other day, it's the Cyclops Easy OSD, and to be honest I don't know how these companies get away with giving no instruction or manual with their products!
The bits for my OSD literally arrived in a anti-static bag, and that's it! Nothing else, no paperwork, nothing! I guess I should be thankful they came in the anti-static bag rather than a sandwich bag or crisp packet!
So, I guess I'll start trawling YouTube for some video's on how it plugs together and wires in to the what I already have...bliming heck but this learning curve is just getting steeper!
Regarding FPV, yeah, I'm kind of doing that, but kind of not :)
I have a 7" monitor on a tripod which I feed live AV from my GoPro. The feed has been very helpful when the hexa's out of sight (even if it is a little scary, especially when you temporarily lose the AV signal!!). You have to put a lot of trust in your gear when the hexa's out of sight. I've just bought a new aerial for the onboard AV TX as I think the one I have is a little flaky, I'm not sure if I shouldn't have bought two, one for the hexa, one for the groundstation...hmmmm

Regarding soldering the pads on the bottom plate, to be honest I didn't put half that amount of solder on, not sure if you should or not really. I got my 'instruction' from YouTube so it could well be wrong, but thus far I've not had any issues with the ESC's coming loose.
But, do what you feel comfortable with, it's your money which'll be hovering in the sky... :)
 

Martyf1

Member
mmurfitt....can you post a pic of your 550? Wanna see what ya got and where... I agree on the instuction manuals, or lack thereof!! I feel like most of my build instructions has come off of youtube, and I don't think we should have to spend hours trolling the videos looking for how to do something. Got my Graupner props yesterday. Checked a couple for balance and they were right on. Checked one of my old DJI props and it was way out of balance. So maybe that affected my little wobble I mentioned in previous posts.

Back to FPV...did you go 5.8? Straight antennae or the circular? Separate battery to run video? Did I hear the GoPro video feed is a bit delayed getting back to you? I'm looking at FPV equipment now. Wish I could find an all-in-one purchase that I could just hook up and go...already have my eyes set on an Octocopter with a good video camera for the spring....can't get this one up and running fast enough.
 




mmurfitt

Member
mmurfitt....can you post a pic of your 550? Wanna see what ya got and where... I agree on the instuction manuals, or lack thereof!! I feel like most of my build instructions has come off of youtube, and I don't think we should have to spend hours trolling the videos looking for how to do something. Got my Graupner props yesterday. Checked a couple for balance and they were right on. Checked one of my old DJI props and it was way out of balance. So maybe that affected my little wobble I mentioned in previous posts.

Back to FPV...did you go 5.8? Straight antennae or the circular? Separate battery to run video? Did I hear the GoPro video feed is a bit delayed getting back to you? I'm looking at FPV equipment now. Wish I could find an all-in-one purchase that I could just hook up and go...already have my eyes set on an Octocopter with a good video camera for the spring....can't get this one up and running fast enough.

Hey Marty, I'll post some photos, but it may not be till Monday as I gave a fairly hectic weekend ahead.
Regarding the props, it sounds like you found the problem, I guess the only to properly tell is to try the new props and see if the wobble's gone.
I got a straight antenna with my AV TX, but I've just bought a twirly one to see if the signal holds up a bit better, I have a feeling I should have bought two of them, we'll see...
Oh, and yea, I went with 5.8ghz, it seemed like the sensible choice for distance and resilience.

If someone comes up with a decent all-in-one kit they'd make a killing, this stuff is quite aid soon to learn for newbies!


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mmurfitt

Member
What made you go with the 10x5"s? I'm getting a recommendation of using the 8x5"'s. Any issues with the 10's? Your thoughts?
Thanks.

I went with the 10" props as well, they're supposed to have a greater lift capacity when coupled with a larger battery.
Not sure if this true or not, but I seem to get around 12mins flight time from my combo..


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Martyf1

Member
What made you go with the 10x5"s? I'm getting a recommendation of using the 8x5"'s. Any issues with the 10's? Your thoughts?
Thanks.

Hal, take this for what it's worth as I'm also a newb, just a little further along than you. But from what I've read on the forums, I'm picking up that the 8 x 5's are better for more manuverability and hot-doggin. I'm looking for maximum lift for aerial photos, hence the 10's. If you have other info, I'd love to hear it.
 

PilotHal

Real Pilot, RC's Too
I'm getting some conflicting info, so I'm not sure which way to go. Which battery do you use with the 10x5" props?
 

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