Eachine US/UK65: Relevant in 2020?

By Werdna FPV on Dec 18, 2019

10  1,174  17

Update 23/5/20: Changed the brittle stock canopy to a 3D printed TPU canopy for the Eachine F7 AIO Camera. Adds about 0.5g and a lot more durable and also mitigates the camera being pushed back into the canopy during crashes. I also tied down the battery lead to the frame with dental floss to prevent the power leads from being ripped off from the CBF3 during a crash.

With the advent of super-powered 1S brushless whoops in late 2019 such as the Meteor65 and Mobula6, I set out to find if my old Eachine US/UK65 could stay relevant amid the crowd of new technology, thus I set out to mod it to be faster, more powerful, and lighter.

Dry weight of my quad and the contenders:
Mobula6: 19.76g (according to Gal Kremer)
Super Eachine UK65: 22.5g (according to my crappy weighing scale)
BetaFPV Meteor65: 22.8g (according to Nick Burns)
So, my quad is not the lightest but it is definitely still quite light, as it stays below the 24g dry weight needed for good performance.

BetaFPV Beta65 Pro Frame
Better than the original brittle frame, not expensive, and around the same weight. Highly recommend changing ASAP as the stock frame is really bad.

Happymodel 0802 19000kv Motors
A significant upgrade over the stock 0603, which are the same KV but ridiculously less efficient. Average amp draw on 0603 is 5.5A but only 4.3A on the 0802, leading to 45 seconds more flight time. The top end power is the same as the KV is the same but there is more low end torque on the 0802, similar to how a 2306 motor has better low-end control than a 2207 due to the wider stator. This is the most significant upgrade to the UK65.

Solid-pin PH2.0
This upgrade is a must-have as the voltage sag on the stock crimped pins with U-shaped hollow connectors is terrible, sagging to 2.8V at the end of the flight, while solid pin allows voltage to stay robust at 3.1V and above throughout the flight and is better for battery life. I cannot stress how important this simple upgrade is for longer flight times, more power, less overheating, lower amp draw and better health of the 1S batteries.

Gemfan 1219
These props are incredibly hardy, I have flown the same pair for a few months and not a single one has broken after numerous crashes. They also have good efficiency and control and I cannot tell the difference between it and a 4 bladed prop while turning tight corners. The only downside is that it is near impossible to turtle mode. I also tried Gemfan 1224, Eachine E010 stock props, BetaFPV blue props etc but none were as good as the Gemfan 1219.

Betaflight 4.1.1 Performance Edition
It is now possible to get Betaflight 4.1.1 with all its amazing functionalities on Brushless F3 boards like these. I flashed 4.1.1 with target CRAZYBEEF3FR .hex file and it flies well!

Conclusion: US/UK65 can still be relevant in 2020 :)



Sign in to comment

rob303   Oct 03, 2020  

I've done a few of the upgrades; (1) motors - much more stable to fly now (unless my original were not good - i couldn't fly though small gaps) (2) frame - i destroyed the original in a few days its brittle...i got the BetaFPV Meteor65 frame its really good. (3) slightly thicker 24AWG (vs original 26AWG) but still open pin...its hard to get the solid pin one for cheap and reviewers of this lead on banggood reckon it increases flight time same as solid pin. (4) props - same as in your list....i can't tell difference but i didn't compare to original since that was 0.8mm. New props when they fail they seem to damage where the centre hole splits....i'm not sure if this is me causing when i remove a prop to remove hair that gets tangled.

Werdna FPV   Oct 05, 2020 

On the rolled pin with thicker cables, your amp draw will be lower at first but after a few dozen flights it will wear out and be exactly the same as before. No point going with a thicker cable and adding weight when the problem is not the cable but the resistance of the rolled pin. Solid pins (or even better, BT2.0 if you can afford it) are sadly still the only way to have good amp draw after many flights. They are hard to find but you can get them on Aliexpress or make your own

rob303   Oct 03, 2020  

Those 0802 motors have 1mm shaft...are you sure the part list is correct where it has 0.8mm props?

Werdna FPV   Oct 03, 2020 

Oops! An oversight on my part, have just made the correction. Thanks for informing. Yes I am now using 1mm shafts as 0.8mm is just too weak and thin for holding up in crashes

rob303   May 22, 2020  

Good stuff. A coupe of things; (1) camera always gets pushed back into the canopy what's the fix for that? (2) Are Project Mockingbird settings worth it on this now 0802 motors are recommended?

Show 1 more comment
Werdna FPV   May 22, 2020 

I have also updated a new picture of my UK65 now!

rob303   May 23, 2020 

Cool thanks! Maybe you can add that TPU/3D printed camera mount to the list of parts? It's a must have i think.....i've been gluing my camera onto the standard canopy just to the two points, using Zhanlida E6000, but it still gets pushed but not as bad....i would rather use a new mount.

Werdna FPV   May 23, 2020 

Sure, I have added it to the description! It's a design I got off Thingiverse. Really simple and works well!

RoBerti   Jan 13, 2020  

In stressful working hours, your work is too stressful. We always create a sense of comfort for you so you have a relaxing time. You try dinosaur game an extremely fun game. thank you!

Werdna FPV   Jan 16, 2020 

Thanks bro but FPV is a better stress reliever :D

Rice_Bowl   Dec 19, 2019  

yes they are still relevant!! imagine if you can still make it work after 2030...thats a working piece of vintage tech hahaha

Werdna FPV   Dec 19, 2019 

Haha... given that some people still fly their KK2.0 quads, I'd imagine that is possible. Not like it would be wise though, as tiny whoops in 2030 will probably all be 6S with Betaflight 10.1 and have some crazy sort of power and agility unfathomable to us right now. XD

Rice_Bowl   Dec 19, 2019 

OMG a 6s whoop dsjlgmnsjgnkjsg. I can only imagine ahhaha. The battery is like 3 times heavier than the quad ahhahaha

Werdna FPV   Dec 19, 2019 

Haha not necessarily. Imagine a GNB 6S 50mah. Together with some 0802 4000kv motors. Can you imagine what a beast that would be LOL

LucaFur23   Dec 18, 2019  

Can i get the gear cost?

Werdna FPV   Dec 18, 2019 

I spent about US$40 on upgrades in total

Guides & Reviews

Jun 21, 2021

AirbladeUAV has done it again and this time they've brought long range to the 5" class! Based on the popular Transformer Mini, the new Transformer 5" Ultralight adopts a lot of the same design philosophies with larger props and more payload capacity. It can fly upwards of 20 minutes on a 4 cell Li-Ion battery pack and in ideal conditions it's got a range of over 4 to 5 miles. In this guide I'll walk..

Read more
Mar 04, 2021

With the release of the DJI FPV Drone cinematic FPV has become a lot more accessible, but you certainly don't want to crash a $750 drone! The QAV-CINE Freybott is a compact, lightweight cinematic FPV drone that can take a hit and keep going. It's a lot safer to fly indoors and around people. With a naked GoPro or the SMO 4k you can capture some great stabilized footage. In this guide I'll show you..

Read more