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 KISS fc

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muckyman
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PostSubject: Re: KISS fc   Fri Dec 02, 2016 10:46 am

Bet your ring was twitching then... lol!

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CANNER
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PostSubject: Re: KISS fc   Fri Dec 02, 2016 9:24 pm

I'm done looking around for a brushed micro. I found out that the average lifetime for the brushed motors is about 12 hrs of flight and that it is very difficult to get the quad to fly smooth. Apparently the brushed motors aren't very strong and also not quick enough to maintain good stability, which is extra important when flying fpv cause you notice every wobble. So I decided to search for a microquad with brushless motors, but the smallest is still 120 sized.

Then I found this awesome little frame, only it is not available yet, have to wait a few days/weeks. But I will certainly buy it as soon as it is out. :

http://www.banggood.com/Halo-90-90MM-Mini-Brushless-FPV-Multirotor-Racing-Frame-35g-Carbon-Fiber-Aluminium-Construction-p-1109742.html?rmmds=detail-left-viewhistory

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PostSubject: Re: KISS fc   Sat Dec 03, 2016 1:58 pm

Found a supertiny PDB and flightcontroller-in-one, and also a 4-in-1 ESC board. Both are only 2x2cm in size. A challenge to solder, but perfect to go with that miniframe above.

Parts list:

Frame  €23  : http://www.banggood.com/Halo-90-90MM-Mini-Brushless-FPV-Multirotor-Racing-Frame-35g-Carbon-Fiber-Aluminium-Construction-p-1109742.html?rmmds=search

PDB+FC  €23  : http://www.banggood.com/CleanFlight-BetaFlight-Micro-F3-Flight-Controller-Built-in-PDB-Buzzer-20X20mm-For-FPV-Racing-p-1094615.html?rmmds=search

4-in-1 ESC  €26  : http://www.banggood.com/Racerstar-Mini-RS6Ax4-6A-1-2S-Blheli_S-BB2-4-In-1-ESC-with-5V-BEC-Support-Oneshot125-D-Shot-p-1110025.html?rmmds=search

motors  4x8,50 €34  : http://www.banggood.com/Racerstar-1104-BR1104-4000KV-1-2S-Brushless-Motor-For-100-120-150-Glass-RC-Multirotor-Frame-Kit-p-1065658.html?rmmds=search

mini sbus receiver  €13  : http://www.banggood.com/Kingkong-Mini-Frsky-D8-Compatible-Receiver-SBUS-PPM-For-X9D-X12S-X9E-Transmitter-p-1094782.html?rmmds=detail-top-alsolike

camera+vtx  €18  : http://www.banggood.com/Eachine-EF-01-AIO-5_8G-40CH-25MW-VTX-800TVL-13-Cmos-FPV-Camera-p-1064301.html?rmmds=search

Batteries  €6 each:  http://www.banggood.com/ZOP-Power-7_4V-500mAh-45C-2S-Lipo-Battery-XT60-Plug-p-1088305.html?rmmds=search

Plus add about €20 for small stuff like props, LEDs, etc, and shipping/insurance costs.

To get an idea of the cost of building the Halo90, I made this list of cheapest and smallest parts I could find.
Total cost, including a few batteries and everything else needed, will be about €175.

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PostSubject: Re: KISS fc   Sun Dec 11, 2016 10:03 pm

Few of the first real testflights with the KISS. It does fly pretty well, and I can notice a difference in the flight characteristics vs the cheapo nano cc3d.

But there are a few problems, which can only be solved by doing a total rebuild. The 2600kvRB motors are too strong, while the 3mm frame is too thin. Apparently the Emax 2600kvRB motors are very noisy and known to cause vibrations. Plus they draw huge amperage and drain the battery superquick, which isn't very nice.

I am not really disappointed, just shit I have to wait for new parts. Though the weather is not great for flying lately either so it doesn't matter much. The 2600kv's will go on my 180, try and see how they handle the amperage with 4inch blades. Smile

I am flying like a Drunken Ninja lol!



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PostSubject: Re: KISS fc   Mon Dec 12, 2016 12:50 pm

Going to buy the larger version of the 180 frame I already have. The bottomplate is also 3mm thick, like the qavx210 I used for the KISS build. But the LS210s arms are bigger, so less bendy. Will buy extra standoffs so I can customise the frame to become flatter.  Smile

http://www.banggood.com/Lisam-LS-210-210mm-Carbon-Fiber-Frame-Kit-Mini-Quadcopter-p-1001216.html?rmmds=category

Not sure what replacement motors I will get yet. Have looked for Lumeniers, they are supposed to be the best, but also quite expensive. €110 for 4pcs. Surprised

Rebuilding the quad with a different frame will be better anyway, cause I wasn't very pleased having the battery on the bottom.
Even a normal landing can go hard if you throttle down a little bit too early. It's just bad for the batteries to squash them each landing.
Also a problem is, because of the battery below, the quad tends to be unstable after landing and then tilts. Which sucks when the props are still spinning, causing the blades to grind and get damaged on the ground.

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