Yeti 6LR long-range cruiser

By beeb on Feb 15, 2019

13  698  1

This build was my attempt at making a long-range cruiser that's not too heavy, so that I can potentially try to fly a 6s1p Li-ion custom pack without drawing too much current. I found the Yeti frame by FridayFPV which comes in at 96g which is super light for a 6" non-racing frame! It should be able to carry a GoPro Hero 7 (which I enabled by designing custom TPU parts), and carry any size or shape batteries which is why I wanted a bottom mount style.

Components

  • BrainFPV Radix as flight controller: it has a nice graphical OSD to display gyro noise and features a high-quality gyro chip
  • T-Motor F55A Pro ESC: according to some tests I saw, this ESC is low-noise and will provide waaayyyy enough headroom for current draw
  • MB Primo 2208 motors: smooth and quite cheap, these are really enjoyed by long-range enthusiasts
  • Runcam Racer (first version): camera with a very nice dynamic range, not going for realism here, the picture looks kinda weird but you see EVERYTHING
  • TBS Unify Pro MMCX: first time actually using a MMCX vTX, came in handy when assembling the quad because I could easily pop off the pigtail to remove the "canopy"
  • Crossfire Diversity Nano RX: the new receiver allows to use 2 antennas, thus cancelling nulls in the reception pattern and also can use a backup battery to run after the main battery is ejected
  • 35mm GPS board: I found the small 18x18mm boards tend to lose reception over time, and become quite useless after a few months. The bigger ones provide quick fixes and seem to work better
  • Vifly Finder 2: buzzer with its own battery so that it can still beep in case the main battery is ejected. And it's loud.

Alt Tag

Build

Here are some pics of the build, it's pretty tight but you can take advantage of the height to make a 4-layers stack.

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Alt Tag Fitted a capacitor as an afterthought because I'm gonna use 6s Alt Tag Printed some custom parts to angle the two antennas 90 degrees to each other Alt Tag waiting for motors to be delivered...
Alt Tag motors are here!

It's done! I won't lie it was not easy cramming everything into that stack, but I'm super happy with the result!

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Finished

And here are the not-so-glamour shots! I'm pretty happy with the weight, it would have been hard to make it much lighter without compromising on motor power or features.

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Maiden Flight

Hope you liked it!

Photos

Part List

Frame

Yeti 6LR, mid-long range cruiser
Fridayfpv.com
$1.12

Flight Controller

BrainFPV RADIX Flight Controller (Custom Graphical OSD, Baro, Stackable) (57 builds)
Getfpv.com
$54.99

ESCs

T-Motor F55A Pro 55A 3-6s BLHeli32 4-in-1 ESC (10 builds)
Getfpv.com
$74.99

Motors

4 x MB Primo 2208 2150kv (8 builds)
Multicopterbuilders.com
$75.96

Propellers

EMAX Avan 6x3.8x2 Long Range Bi-Blade 6" Prop 4 Pack - Choose Your Color (8 builds)
Racedayquads.com
$3.99

FPV Camera

FPVracing.ch
Fpvracing.ch
$37.00

FPV Transmitter

TBS Unify Pro 5G8 HV SE (MMCX) (10 builds)
Team-blacksheep.com
$44.95

Antenna

VAS ION V2 ANTENNA 5.8GHz (RHCP) (9 builds)
Team-blacksheep.com
$16.95

Receiver

TBS Crossfire Diversity Nano RX (12 builds)
Team-blacksheep.com
$59.95

Radio

FrSky 2.4G Accst Taranis Q X7 16 Channels Transmitter Radio Controller White for RC Drone (132 builds)
Amazon.com
$126.99

Goggles

Fat Shark Dominator HDO FPV Goggles (38 builds)
Getfpv.com
$499.99

HD Camera

GoPro HERO Session Waterproof HD Action Camera (4 builds)
$135.00

HD Camera

GoPro HERO7 Black — Waterproof Digital Action Camera with Touch Screen 4K HD Video 12MP Photos Live Streaming Stabili (5 builds)
Amazon.com
See Site

Misc Parts

Mini uBlox M8N GPS GLONASS W/ (35x35mm) Mounting backplane and Compass V2 (4 builds)
Readytoflyquads.com
$17.00

Misc Parts

Vifly Finder 2 Buzzer - Lost Drone Finder/Locater/Alarm (24 builds)
Racedayquads.com
$14.99

Video Receiver

ImmersionRC rapidFIRE w/ Analog PLUS Goggle Receiver Module (44 builds)
Getfpv.com
$159.99

Radio Module

TBS Crossfire Transmitter
$208.95

Battery Charger

SkyRC - Q200 AC/DC 2x100W 2x50W LiPo 1-6S 10A Ladegerät
Fpvracing.ch
$219.00

Backpack

Lowepro QuadGuard BP X2
Fpvracing.ch
$129.90
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Discussion

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Currently   Feb 24, 2019  

Epic video!

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