165.80 mph 5s Quad: VXR-190

By QuadStar Drones on Aug 12, 2017

15  1,079  4

165.80 mph (266.83 kmh) is the average speed taken in back to back opposite direction passes over a distance of 100 meters. A link to the data and analysis is below.

Still relying heavily on physics in the continuing pursuit of efficiency. Frame strength was always an issue, but that was addressed with this frame which is only 48g and can handle me standing on it (165 lbs). If I could just do something about that Easter egg nose... Apologies - I am severely lacking in pictures of this frame at the moment.

Oh nooooo!

The next flight didn't go so well. After reviewing everything, I found a peculiar impact mark on the body (see the image below): it was very defined, at the same angle as the prop blade, and in a spot where an impact with the ground couldn't have done any damage. When reviewing the blackbox log, it showed motor 1 jump to 100% at the same moment the quad went into a spin. The conclusion was a prop failure. That's what I get for going over the manufacturer's limits! However, I can't be 100% sure of this conclusion... Although the frame can handle me carefully stepping and standing on it, 2 of the arms (and egg) didn't survive the 60+ mph impact on hard, compact dirt. No better reason to move on, so on to the next project - I think I might finally be ready to bump up to a 6s, but then there is this issue: https://quadstardrones.com/2017/07/11/quadcopters-have-hit-the-sound-barrier/


How the data is analyzed

Blackbox Log file

Decoded GPS log

Drone Physics


Part List


Quad Star Drones (7 builds)
See Site

Flight Controller

BetaflightF3 AIO Flight Controller (131 builds)


4 x Spedix 30A 2-6s BLHeli_S ES 30 HV ESC (2 builds)


4 x COBRA MOTORS 50... CHAMPION SERIES 2207 2450KV (2 builds)



FPV Camera

Crazepony 700TVL Wide Angle FPV Camera 700TVL 3.6mm Lens NTSC for QAV250 (4 builds)

FPV Transmitter

AKK X1 40CH 25mW/200mW/600mW Switchable FPV Transmitter with Push Button and Digital Display (12 builds)


Anbee FPV 5.8Ghz Circular Polarized Clover Leaf Antenna High Gain Aerial Set w/RP-SMA Female Plug (8 builds)


Lemon Rx DSMX Compatible Diversity Satellite (DSM2 backward compatible but must use DSMX compatible primary receiver) LM0037 (42 builds)


Tattu 1300mAh 5S1P 75C 18.5V LiPo Battery

Misc Parts

MIDWEST PRODUCTS 5742... CARBON FIBER STRIP,.057x.177 ( (3 builds)

Misc Parts

Plastic Easter Eggs (24 Pack) Hinged 6 Asst Colors

Misc Parts

MagiDeal Pack of 4 Carbon Fiber Tube 8*6mm 330mm DIY Vanished Surface Tail Tube (6 builds)

Misc Parts

Micro uBlox M8N GPS GLONASS W/ (18x18mm) (21 builds)

Misc Parts

Autek 2pcs 6MM OD X 4MM ID X 400MM Carbon fiber wing tube Quadcopter arm Hexrcopter (3 builds)

Misc Parts

Braided Carbon Fiber Round Tubing ~ 1.75" ID x 24"
See Site
Show stores (8)


Sign in to comment

nikondera   Aug 16, 2017  

How do you transfer the information from the GPS-tracker to your OSD?

QuadStar Drones   Aug 16, 2017 

I will try to explain it, not at home rt now: You hook up the gps to one of the uarts on the flight controller. Whatever uart port you are using, set it to gps in the ports tab in betaflight (i cannot remember baud rate). Now set the osd so it shows gps speed. You either have to have an osd built into the flight controller or use a micro minimosd. You got me thinking, I should write up a tutorial.

metropolis   Aug 12, 2017  

Nice job, bud!!! :D

QuadStar Drones   Aug 13, 2017 

Thanks! It almost didn't happen. Lost GPS lock after 1 pass, loitered with no luck, then just before landing I got a lock again and went up for 2 more passes (the ones in the video)

Guides & Reviews

3 1,536  5
15 days ago

Save 7% on the T8SG Plus with the coupon code "Toyho" at Banggood This is a surprising little transmitter. The Jumper T8SG Plus is a compact, multi-protocol radio tailored for FPV pilots. While it's not the cheapest transmitter on the market, it's certainly a huge leap forward in terms of quality and flexibility. The multi-protocol module lets you fly most toy quads as well as hobby-grade FPV..

Read more
39 3,891  27
27 days ago

The Diatone GT-M200 is a racing/freestyle frame that features an aluminum alloy cage and 6mm replaceable arms. The goal of this build was to balance price, features and quality. It features an F4 flight controller which allows an 8khz gyro update and PID loop frequency and the latest filters. Additionally with BLHeli_32 it supports the DSHOT1200 motor protocol and custom startup music. This also..

Read more