Ultralight "MicroGP" 1S brushed "toothpick" FPV quad (MultiGP Micro Class build) - BUILD LOG

When talking about fast, nimble and enjoyable micro quads, your mind will most probably go straight to 2S, 3S or even 4S builds, with screamingly high KV motors and expensive gear.

Inspired by the recent introduction of the Micro Class in the MultiGP leagues, I started planning out for a lightweight brushed build, strictly based on 1S batteries and composed of easily found hardware. I am a fan of micros and wanted to see how "good" a 1S quad can be in the air.

The must haves were the following:
Frame: small footprint, compatible with 65mm props
Motors: cheap, powerful and reliable
F/C: all-in-one, including receiver and OSD
VTx: switchable from 25mW to 200mW

The weight goal was initially 36,5 grams and required some tricks to reach.
After various combinations and several test builds, I finally assembled the most enjoyable of them all, that ticks all checkboxes and survives some crashes as well.
Starting at 36,3 grams (dry) and according to my motor/prop static thrust tests, this build has a power to weight ratio of 3,39:1 (using 300mah nanotech 1S batteries).
With a few touches here and there it easily drops down to 35,5 grams (dry), with a 3,45:1 power to weight ratio!
And if you opt for a light 25mW AiO FPV combo instead of the 600TVL board camera and the switchable VTx, you can easily exceed 3,5:1 power to weight ratio..

These numbers may not seem much, especially when compared to powerful 3" and 4" builds.
But the miniscule weight and size, combined with the convenience of 1S batteries, make for an extremely enjoyable and fast micro brushed quad.

This is BUILD LOG: Ultralight "MicroGP" 1S brushed quad (MultiGP Micro Class build). Let's go!

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Parts list (and some alternatives):

MI110 frame: https://goo.gl/aXb6Pk or https://goo.gl/EKUCrF or https://goo.gl/pYLqNw

AIOF3_Brushed flight controller: https://goo.gl/UGVcu2
(alternative #1) AIOF3PRO_Brushed flight controller: https://goo.gl/2xvjt8
(alternative #2) Aurora RC JHF3 V1.0 F3 brushed flight controller: https://goo.gl/Wspkr9

RACERSTAR 8520 motors (set of 4 in black): https://goo.gl/JrWJOS
RACERSTAR 8520 motors (set of 4 in red): https://goo.gl/tfuYY1 or https://goo.gl/EQfSu6

KINGKONG 65mm propellers (10 pairs in black or red): https://goo.gl/eom0tW or https://goo.gl/FbyIwG

VTX03 Switchable 25/50/200mW: https://goo.gl/Am23jQ or https://goo.gl/0oGKvw
(alternative #1) VTX01 25mW: https://goo.gl/oBAqI2 or https://goo.gl/O5bXZP
(alternative #2) VTX02 200mW: https://goo.gl/EcQHKj or https://goo.gl/3YF9yc
(alternative #3) ATX03 25/50/200mW with audio: https://goo.gl/lW4SQA

600TVL CMOS camera: https://goo.gl/kLw4Y0 or https://goo.gl/Li4Wcc or https://goo.gl/6IO5Yz
(alternative #1) 700TVL CMOS camera: https://goo.gl/DXu4P7 or https://goo.gl/1bXkQT
(alternative #2) 1000TVL CMOS camera: https://goo.gl/M8JnFk or https://goo.gl/Wns4vY or https://goo.gl/MGNz5z

Adhesive 9.5mm 3:1 heat shrink: https://goo.gl/HoJCLb or https://goo.gl/XIVFHC

Convenient heat shrink 2:1 basic kit: https://goo.gl/vpDt6u


If you are wondering about the tools, you can find them here:

Realacc Strange Third Hand: https://goo.gl/aEeo6D
S.K. Wire stripper: https://goo.gl/YYzCMx
TS100 soldering iron (various versions): https://goo.gl/44Iz0s or https://goo.gl/GC7wNf or https://goo.gl/Y7UuSL or https://goo.gl/h2895r or https://goo.gl/r07g3o
Replacement TS100 shell in various colors: https://goo.gl/44GPtO

Relevant video for the helping hands and wire stripper:    • Realacc Strange Third (helping) Hand ...  
Relevant video for the soldering iron:    • TS100 Soldering Iron - Overview, Conf...  


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This video features the song "Talking With You" by Artificial Music, available under a Creative Commons License
Song link:    • Talking With You – Artificial Music (...  
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