Slammed 5" / 5S Reverb

By War Chest on Jan 02, 2019

14  631  6

Introduction

This is the newest freestyle rig that I've added to my fleet. After spending the last 15 months exclusively flying X-Hover Stingy Frames with Betaflight based flight controllers, I've decided to try something as different from my standard builds as I could come up with while suiting my typical freestyle needs.

Why 5S power instead of 6S?

While everyone is migrating over from 4S to 6S, I decided to commit to a 5S powered route for all my quads because I also fly quite a few 6" quads. Since the 6" quad space is a relatively unpopular one, I've had a hard time locating a good, smooth, low-kv motor (1400kv) that matches a 6" / 6S setup.

In my opinion, 5S is able to keep the same rough consistency in power output as 6S is. The difference between 5S to 6S is far less dramatic than the difference between 5S and 4S.

Goal and Parts Selection

The goal of this quad was to build a relativey lightweight (for freestyle) and reliable 5S powered rig that is high kv in power, long freestyle flight time, and has excellent flight characteristics.

In order to achieve this, I've dropped the Reverb frame height from 30mm down to 25mm with aftermarket standoffs (for a lower center of gravity), selected the incredibly smooth and powerful 2407 sized ETHiX Konasty 2200kv motors and paired them with the extremely battery efficient ETHiX 5x3.1x3 S3 prop.

Weight Reduction

I've used the following method below for shaving weight off the typical Reverb Build:

  • Selected Micro FPV Cam over Fullsized FPV Cam
  • Used small 3D printed FPV Micro cam mounts instead of the stock carbon fiber FPV cam side plates
  • Used the TBS Crossfire Nano RX instead of the Crossfire Micro RX
  • Used slightly shorter titanium buttonhead screws instead of the longer standard steel frame screws.
  • Used 3 x 6mm titanium screws per motor over the stock 4 x 7mm steel screws that came with the motors.
  • Selected foam wedge to mount the GoPro Session instead of a 3D printed TPU mount.
  • Used one single lighter ETHiX battery strap over 2 standard ImpulseRC straps
  • Minimized use of zip ties and shortened wires to the appropriate length.
  • Used ThunderPowerRC 1500mah HV lipos (V2). At 184g, It's by far the lightest 5S battery made to date.

Average 5S powered Reverb / Kiss V2 AUW: 665g-680g
My current 5S AUW: 621g
With ThunderPowerRC's 1300mah 4S AUW: 585g

Results

With a "relatively" light 621g AUW, low cg, heaps of power, crystal clear FPV feed, and KISS V2 firmware, this freestyle quad is incredibly smooth and responsive. Kiss firmware (my first Kiss build) appears to have slightly less stick latency than even my best tuned 5" Betaflight quad and generally feels a bit more locked in and predictable from my intial tests. The Rotor Riot Micro Eagle Pro FPV cam (with gain dialed down to zero) is definitely a fantastic successor to the fullsized CCD based Swift 2. And finally, the 2407 2200kv Konasty motors (which TBH are highly inefficient above 80% throttle) are highly responsive and efficient from 20-70% throttle (where most freestyle pilots sit).

I may decide to change these motors in the future to a lower kv (2000kv to 2050kv) but for now, I'm happy with the heaps of power, predictablity, and 4 minute flight times.

You can see some flights from this quad over on my youtube channel:

https://www.youtube.com/c/warchest

Photos

Part List

Frame

REVERB 5" Frame
$81.41

Flight Controller

KISS FC V2 - 32bit Flight Controller (25 builds)
Getfpv.com
$69.99

ESCs

4 x KISS 32A 32bit ESC (2-6S) (7 builds)
Getfpv.com
$127.96

Motors

4 x Ethix Konasty 2407 2200KV
Store.rotorriot.com
$103.96

Propellers

ETHIX S3 WATERMELON PROPS (3 builds)
Newbeedrone.com
$3.59

FPV Camera

Rotor Riot Micro Eagle Pro - JB EditionDefault Title (9 builds)
Racedayquads.com
$46.95

FPV Transmitter

TBS Unify Pro 5G8 HV (SMA) (414 builds)
Getfpv.com
$49.99

Antenna

Lumenier AXII 5.8GHz Antenna (RHCP) (2pcs) (148 builds)
Getfpv.com
$34.99

Receiver

Team BlackSheep TBS Crossfire Nano RX - Heli-Nation (88 builds)
Heli-nation.com
$29.95

Batteries

Thunder Power RC TP1500-5SD100X
Thunderpowerrc.com
See Site

Power Distribution

ImpulseRC Wolf PDB (2 builds)
Team-blacksheep.com
$48.10

HD Camera

GoPro HERO5 Session (312 builds)
Getfpv.com
$199.99

Transmitter

FrSky 2.4GHz ACCST TARANIS X9D PLUS Special Edition (Mode 2) (EU) (Carbon Fiber) (9 builds)
Hobbyking.com
See Site

Misc Parts

ETHIX GoPro Strap (4pcs) (2 builds)
Team-blacksheep.com
$6.95

Misc Parts

ETHIX Battery Straps (4pcs) (3 builds)
Team-blacksheep.com
$5.99

Misc Parts

M3x8 Button Head Titanium Screws (10pcs) (2 builds)
Getfpv.com
$5.99

Misc Parts

UMMAGRIP – Universal Super Sticky Battery Pad by Rotor Riot (26 builds)
Racedayquads.com
$4.99

Misc Parts

Forever Tubes (Tubes & Caps ONLY) (4 builds)
Oashobby.com
$3.00

Misc Parts

5 PCS Super Loud 5V Active Alarm Buzzer Beeper Tracker 9*5.5mm for RC MultiRotor FPV Racing Drone (27 builds)
Banggood.com
$2.98

Misc Parts

PANASONIC FM Series 1000UF 35V LOW ESR CAPACITOR FOR ESC NOISE REDUCTION (31 builds)
Taco-rc.com
$1.49

Misc Parts

7 x Knurled Standoff - CHOOSE YOUR COLOR AND SIZE - 5, 10, 15, 20, 25, 30, 35mm - (1 PC)Light Blue / 25mm (6 builds)
Racedayquads.com
$5.25
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Discussion

Sign in to comment

Thund3r   8 hours ago  

This is probably the coolest Reverb I have ever seen. You did an amazing job building it, as well as this RotorBuilds page. Great work!

QuadConnect   12 days ago  

Just ran your pic through a image filter cause it looked nice...

War Chest   12 days ago 

Lookin good QuadConnect!

ItsPez   14 days ago  
1

Awesome build! Probably one of the most thorough descriptions I have ever read of this forum, from the reason for a 5s build to explaninging your auw. And the pictures are hot enough to be a wallpaper.

s00lfly   14 days ago 

That exactly what I say to myself ! That Reverb KISSed is sicker than mine :o

War Chest   14 days ago 
1

hey i appreciate the kinds words my dude

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