Tadpole Twig donor

By DoubleJackOnTap on Jan 22, 2020

16  1,440  6

I originally bought the Eachine Twig 115 for a donor project.  As soon as the Tadpole was released I knew I would buy one. The Twig components seemed like a good start.  I wasn't impressed with the Twig.  The canopy broke on the first crash and the screws in the stack were bent.  I had lots of jello issues even after I upgraded to BF 4.1 with rpm filters.  This was also my first battery under frame design.  I really prefer the top mount battery, so the Tadpole seems like a perfect fit.

The motors may be underpowered but time will tell.  If I need to replace them I'll probably get some Xing motors.

Photos

Part List

Frame

Tadpole (30 builds)
Armattanquads.com
$34.00

Propellers

AVAN Rush 2.5 Inch Prop - RED (34 builds)
Emax-usa.com
$1.59

Radio

TBS Tango 2 Pro - FPV RC Radio Drone Controller (80 builds)
Team-blacksheep.com
$199.95

Radio

FrSky Taranis Q X7 Int'l Version Digital Telemetry Radio System 2.4GHz ACCST (Black-no plugs) (2 builds)
Hobbyking.com
$104.99

Goggles

Fat Shark Dominator HD3 Core FPV Goggles (83 builds)
Getfpv.com
$399.99

HD Camera

GoPro Hero5 Session (Renewed) (17 builds)
Amazon.com
$184.99

Misc Parts

Eachine Twig 115mm 3 Inch 2-3S FPV Racing Drone BNF Frsky D8 Crazybee F4 PRO V3.0 Runcam Nano2 / Caddx Baby Turtle HD Cam
Banggood.com
$85.00

Video Receiver

Furious True-D V3.5 Diversity Receiver System Firmware 3.8A (FatShark Attitude Version)SKU: FPV-RX-TRUD3.8A (27 builds)
Furiousfpv.com
$68.00

Battery Charger

ISDT Q6 Pro BattGo 300W 14A Battery Balance Charger (47 builds)
Getfpv.com
See Site

Tools

Armattan 1.5mm hex drive (2 builds)
Sabotagerc.com
$2.95

Tools

Armattan 2.0mm hex drive (2 builds)
Sabotagerc.com
$2.95

Tools

Armattan 2.5mm hex drive (2 builds)
Sabotagerc.com
$2.95

Accessories

MenaceRC 5.8GHz SMA VTX & Receiver Antenna Pack - RHCP (3 builds)
Racedayquads.com
$35.99

Accessories

Lumenier AXII Diversity Antenna Bundle 5.8GHz (RHCP)
Getfpv.com
$34.99

Accessories

VAS 5.8GHz Ion Pro SMA Antenna (RHCP) (3 builds)
Getfpv.com
$19.99

Misc Supplies

3DPOWER Universal ND Filter GoPro Session FPV Case and Mount TPU Parts (2 builds)
Taco-rc.com
$14.99
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Discussion

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BPETER   Dec 30, 2020  
1

Hello, nice build :D I`m doing exactly the same build, just using the HD version of the twig.
Did you get the quad flying okay? Can you share your PIDs? i get some heavy wobble at lower throttle with 3018 triblade props, what props are you using?

DoubleJackOnTap   Dec 30, 2020 

I also had the HD version of the Twig but couldn't get everything to fit - (stack too tall). I would have had to modify the frame to get it all in there. So on this build I gave up and threw in the standard camera. It flew pretty good on BF defaults with rpm filtering. I have since rebuilt this completely to fit the HD cam, but I used different motors and stack. With the extra weight of the new build I had tuning issues and switched over to Emuflight. For me Emuflight worked better.

Still working on prop selection. The EMAX Avan props have been the best for me so far. They have the least jello and worked great on the original build. On the heavier HD build they aren't very linear. Low rpm flying is hard so throttle control is more difficult. Otherwise they work great.

DoubleJackOnTap   Dec 30, 2020 

Here is the link to the rebuild:
https://rotorbuilds.com/build/24730

I forgot to mention that I do prefer how the heavier build flies. The extra weight makes it feel more like a 5" and you can throw it around for freestyle tricks. The non-HD build was like a really angry wasp, but would be great at racing.

BPETER   Dec 30, 2020 
1

thanks i will try tune betaflight, and if im not happy i will try emuflight.
yess the HD version needs some work to get it in there, but its possible if you direct solder the wires and remove the motor plugs :D
Tried the Avan 3" size? im going to test them on 2.5" avans, indoor looks fine at lower rpms.

Sjass1234   Jan 25, 2020  
1

hello :) nice build!. i am doing almost the same build at the moment :D... but i hope for your help !, what did you do in betaflight with board an gyro allignment ??? really hope for your help

DoubleJackOnTap   Jan 25, 2020 
1

I put the board in upside down from what the Twig had so the USB port faces up.  In Betaflight I had to set pitch to 180 degrees.  I also had to swap motor resources from motor #1 to motor #2 and swap #3 and #4.  Then I checked rotation of the motors and reversed them in JESC so they spun the correct direction.   Hope that helps.

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