It's always great to experience this one of a kind RC copter in person. Each time I try my best to cover these impressions with my gear (this time better camera and mics). What I still cannot capture: the smell of kerosine - smells just like the fullszie version of this copter!
Pilot: Josef Schmirl
Technical Data: (of this newly built RED BULL Cobra) 18 servos for various functions (moving radar, gatling gun, opens doors, drinks redbull of course, stick movements, dropping, flares, smoker) Turbine: Jakadofsky 10kw Weight: 37kg Flying time: 5mins
The Yarbo Lawn Mower Pro is one of the most advanced robot lawn mowers I've tested so far. In my honest in-depth review I challenge this system on my steep slopes, show you the mow results, what's important during the setup and the overal user experience.
My Philosophy: Honest, "almost scientific" testing, I test products rigorously and share honest opinions—even if it costs me affiliate earnings. Using my affiliate links supports my work at no extra cost to you! Huge thanks!🙏
FlywingRC sent me this amazing looking FPV kit which ticks so many boxes - it sounds too good to be true. So I will find out for you, if those fancy visuals of their promo videos hold up in real world testing. As of now I don't know the price, estimations are 1500$ It should be available for you "next month" which hopefully means June 2026. Of course you will see an afiliate link her soon ;)
My Philosophy: Honest, "almost scientific" testing, I test products rigorously and share honest opinions—even if it costs me affiliate earnings. Using my affiliate links supports my work at no extra cost to you! Huge thanks!🙏
FEATURES: - VTol (vertial take off and landing) - FPV Plane mode for efficient longrange - full RTF kit (Plane, Remote, Goggles, Charger, battery, Headtracker, DJI O4 lite, transport box) - Virtual cockpit (working flight stick and throttle, 2 working displays) - head tracker gimbal (your head movements are transferred to the camera - giving you a really IMMERSIVE pilots view) - "radar" where you see other FPV planes
Tech specs I could already find out: Dims: 80 x 88,5 x 71,1 cm (LWH) Plane weight (except batt): 1280 g folds down nice to fit into it's foam suitcase 🔋Battery: 6S 6920 Mah LiIon proprietory (DJI like) batterypack looks like it has LiIonHV pouch cells (IEC NO: 6ICP 11/43/105 from Grepow) weight: 793 g Charges with 5A / 125w, auto discharge to 60% after 5 days ToW: 2037 g Motors: 4x 2807 with 900-1100kv? Props: 10x6 DJI O4 lite with active fan no easy access to the USB C port (for file transfers off the 23 GB int memory) Gimbal and headtracker uses trainer cable from Headtracker module (glued onto DJI Goggles N3) to trainer port of the remote controller DJI Goggles N3 Remote: Flysky ProArt PA01 ELRS see Ian's review here: https://www.youtube.com/watch?v=rbz65x__fto
Honest, "almost scientific" testing. I test products rigorously and share honest opinions—even if it costs me affiliate earnings. Using my affiliate links supports my work at no extra cost to you! Huge thanks! 🙏
===== Tech Specs =====
Mowing System: LiCut™ dual-blade design with airflow for a better cut
Blade Material: High-hardness SK5 tool steel
Cutting Width: 40 cm | Height: 3 - 10 cm
Rotational Speed: 3000-6000 RPM
Mowing Motor Power: 2 x 680 W (2 x 1785 W peak!)
Efficiency: 400 m²/h to 700 m²/h (rated up to 7000 m² / 1.7 Acre a day)
Mapping Limit: Extreme large limit (60,000 m² / 15 Acres)
Warranty: 3-year warranty (1 year 4G contract included)
===== Findings & Deep Dive =====
Version Differences (5A vs 10A)
There are 2 different versions to order (€200 difference). This refers to the CHARGER, not the battery! Both get 15 Ah capacity. The 10A charger just charges faster, allowing you to mow up to 7000m² instead of 4452m² per day.
🔋 Power & Standby
43 W avg: Too high if "Charging Brake" option is activated (for docks on slopes).
17 W normal: Without charging brake (~0.3 kWh vs 1 kWh per day).
🚜 The TRACK System
It still slips and tears up your lawn while doing so! It's not the "conquer-all-slopes" monster you might think. In fact, the Navimow X4 with wheels has better traction on most slopes. Biggest issue: While turning, the floating mow deck touches the ground, making it harder for the tracks to turn.
💡 Pro-Tip: The Flap
Remove the flap and the plastic frame! More grass will be thrown out and less will get stuck. This is definitely the way to go for extreme lawns.
✅ The Highlights
Manual Mowing: A practical option for extreme steep slopes where AI struggles.
Manual Mode Control: You can change speed (up to 1m/sec), mow height, and blade speed. It doesn't timeout quickly like others.
Bluetooth Range: Better than most other bots; control feels very responsive.
The App: Powerful, VERY responsive, and efficient. Setting up areas and NoGo zones is easy.
Global & Per-Map Settings: Set path spacing (25-35cm), stripe angle, or even turn off one outer motor to prevent shooting grass onto paths.
Had it almost a month now and filmed 181 GB of footage ;) I test products "almost scientific" and share honest opinions—even if it costs me affiliate earnings. Using my affiliate links supports my work at no extra cost to you! Huge thanks!🙏
CHIP double the power (10 TOPs) for better AI model
Max climb angle: 38° (80%)
Cutting discs: 2x 165w motors
Cut width: 40 cm
Cut height: 25-70mm
max Lawn size: 3100 m², 30 zones
Data connection:
needed for NetRTK, showing current position on your APP,...
when my 4G contract on the Luba2 ran out - I wanted to just use WIFI - which was not 100% covered in my area - so positioning and display on the app is laggy - sometimes freezes.
Fact: the Luba3 now comes standard with a 3 year 4G connection for free, Luba2 only had 1 year...
4G: you don't need it - but it's an important backup for weak WIFI...
RTK: if you install an antenna - you're less dependant on DATA connection.
Testing the new Segway Navimow X4 420 AWD flagship on my messy, wild property. I'm testing its Xero-Turn maneuverability and obstacle avoidance against molehills, high grass, and my car!
🎁 EXCLUSIVE PRE-ORDER DEAL
Get a FREE Garage (€269.90) + 1-year extra warranty (3+1) here:
My Philosophy: Honest, "almost scientific" testing. I test products rigorously and share honest opinions—even if it costs me affiliate earnings. Using my affiliate links supports my work at no extra cost to you! Huge thanks!🙏
🛠 TECH SPECS
The Navimow X4 420 is the flagship of the new lineup:
✅ AWD Performance
Xero-Turn™ AWD technology - ultra-smooth maneuvering without damaging the grass
Superior obstacle-crossing ability: 84% / 40° slopes!!!, 7cm steps can be taken
Traction control for dips or molehills
✅ No Antenna: Uses Network RTK (NRTK) + Vision (360° Cameras) - no pole in your garden!
EFLS™ NRTK（Option Dual RTK）+ VIO + Vision (3 Camera 360°)
✅ Hyper-Charging: 224W Fast charge (normal 80 W, quick 180 W) - Full in 75 mins
✅ DIMENSIONS: 850 × 610 × 351 mm, Net Weight: 28.8 kg
Triple Efficiency Guarantee
430 mm wide cut (1.8× coverage of single-disc, finish up to 600 m² per hour)
0.8 m/s boosted speed
224W Hyper-Fast Charging (75 mins recharge)
TÜV Rheinland "Lawn Care" Certification!
The Navimow X420 is the world's first robotic lawn mower to be awarded this certification. Rigorously tested on slopes and amidst complex obstacles, it endured a simulated year of high-intensity mowing. Delivering the industry's only "minimal damage" performance, it defines a new benchmark for ultimate lawn protection.
00:00 Intro
01:11 Unboxing
02:35 Hardware Tour: Metal axles & blades
04:17 App Setup & PIN code
05:53 Docking Station Tips
07:51 Auto-Mapping Fail? (Complex Terrain)
12:44 Manual Mapping (The better way)
16:06 Apple Find My Test (Theft Protection)
16:58 How to clean the AWD wheels
17:16 Mowing Test: High grass & 40° Slopes
27:06 Verdict: Is it worth it?
After a long winter and 63 days of not flying I met with my FPV buddies on our favourite spot and we had loads of fun just fooling around with panes, drones and RC cars there. Thanks to footage donors and sorry to the plane I destroeyd. After my first crash with the fragile Chimera4 I flew with the near indestrucible 5" ERA - and it was a good idea ;)
Next time I'll have my Penguin repaired - as this is the most fun FPV meet plane I have. Greets to all FPVers out there and may your season start soon too - happy flying!
In this video you will find out, if this budget scooter is powerfull enough for your needs, see many details, some findings, IMPROVMENTS and 3D printed UPGRADES you shouldn't miss out!
My Philosophy: Honest, "almost scientific" testing, I test products rigorously and share honest opinions—even if it costs me affiliate earnings. Using my affiliate links supports my work at no extra cost to you! Huge thanks!🙏
⚡▬▬▬▬SPECS▬▬▬▬▬▬▬▬▬▬▬▬▬⚡ ⏱️ 50 kph Max. Speed ⚙️ 1600W Powerful Motor (2x 800W) ~ 29Nm torque 3 Modes (Eco, Sport, Race) + Turbo button, mode is remembered! • Realistic RANGE: 30-40km 🔋 48V 18Ah Battery 13S 7P, 864 Wh ~ 400$ (*1) 1st full charge: 892wh (which should be around 760wh in the battery) in 8hrs • BRAKES: Large discs, Steele wire + Electric (EABS), needed some adjustment not to scratch on the discs • KEY: great and important feature, to lock the scooter while parked! • TIRES: 10" • FENDERS: none in front, GAP in the rear fender - 3D Print better ones (*2) • DIMENSIONS (LxHxW): 1258*258+650 mm (Folded: 1258*545*650 mm) • Deck Size: 46x18,7cm (+ 20x13,5cm Backplate) • Pricepoint: 729€ https://www.kugookirineu.com?aff=67
Got the chance to test this Field-Charger / Solar generator in my hangar. Looking forward when I can actually bring this with me on the field and charge my LIPO packs with (almost) infinite, free solar power. We just need some warm temps and sunlight :)
This resort on the maldivian Island of Dheru is called "Jawakara" and was the best island we explored so far (actually it's two islands connected via a 600m long bridge).
Best SETTINGS: 4k30 or 60fps (30 for low light) 4:3 aspect - so you can re-frame if you didn't have your subject centered well Rocksteady stabilization on, wide FOV Option: underwarter color
TRANSFER speeds: Nano (128gb version): ~500 mbytes/sec !!! Action5 (internal mem): ~300 mbytes/sec from SD card: ~80 mbytes/sec
BATTERYLIFE: really good efficiency! Action5 runs very long, little Nano runs "long enough" and is re-charged quickly with it's screen module... Never was an issue in our 2 weeks of snorkeling!
