WLToys A959 High Speed RC Car Step-by-Step Upgrade #3: Metal Gears (Fail!)

Finally! The First Wave of Upgrades! Testing out the WLToys A949/A959/A969/A979 1/18 4WD High Speed RC Car Complete Set of Metal Gears from Banggood! Includes complete instructions and demonstration.

Absolutely nothing wrong with the upgrade metal gears, but the combination of plastic and metal turned out to be a differential-disaster! Need more metal ... solution coming up!

A little puzzled why I haven't seen anybody mention this issue on any videos here? Unless I'm missing something? Would love to hear about your personal experiences upgrading your WLToys A9x9 in the comment section. Let us share.

Hope you will follow along in this series. Most upcoming upgrades are compatible with the WLToys A959-B/A959-A/A949/A969/A969-B/A979/A979-B and other versions in the WLToys 1/18 4WD Vortex High Speed RC Car Series.

The WLToys A959-B & A959 Versions and Upgrade Parts was kindly provided by Banggood, free for review and tests. Part numbers and links to each upgrade will be available in the description box of each instructional video.

T-Power 16PC Upgrade Parts Metal Gear Set for WLToys A949/A959/A969/A979:
https://www.banggood.com/TPOWER-16PC-Upgrade-Parts-Metal-Gear-2-Sets-For-Wltoys-118-A949-A959-Rc-Car-Parts-p-1298997.html?utm_campaign=14782311&utm_content=10896&p=0V012014782311201710

WLtoys A959: https://www.banggood.com/Wltoys-A959-Rc-Car-118-2_4Gh-4WD-Off-Road-Buggy-p-916961.html?utm_campaign=14782311&utm_content=10896&p=0V012014782311201710

WLtoys A959-B: https://www.banggood.com/WLtoys-A959-B-118-4WD-Buggy-Off-Road-RC-Car-70kmh-p-1044138.html?utm_campaign=14782311&utm_content=10896&p=0V012014782311201710

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In this series you will learn how to upgrade an RC Car, step-by-step. You can find many more previous videos and video series with the WLToys A959, A959-B, A959-A and other models in the WLToys 1/18 4WD Vortex High Speed RC Car Line-up on both my channels.

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WLToys A959 Specifications:
- Model Name: WLToys Vortex A959
- Black/Red & Blue/White body options
- Top Speed Specified to 45-50 kph/28-30 mph (measured to 40-42 kph)
- Shaft-Driven 4WD (4x4)
- Full proportional steering/throttle
- Bathtub type chassis
- Polycarbonate body & nose with plastic wing
- 1/18th scale
- Length: 245 mm
- Width: 175 mm
- Height: 94 mm
- Wheelbase: 165 mm
- Wheelspan: 105 mm
- Wheel diameter: 61 mm
- Wheel width: 28 mm
- Double Wishbone Suspension front/rear
- Differential Gear front/rear
- 17T Pinion and 38T Spur
- Plastic Diff Cups
- Plastic Main Drive Shaft
- Black wheels (with grey paint)
- 4 x Single Wheel Nuts
- Metal Wheel Drive Shafts
- Metal Motor- and Suspension Mounts
- Oil Filled Shocks (minimum or no oil on arrival)
- Electric 390 Type Brushed Motor w/ 390 mount
- 2-in-1 ESC/2.4 Ghz Receiver
- 2.4GHz 2-Channel Transmitter w/ steering and throttle trim
- 17 g. Mini-Servo
- JST-plug Connectors (ESC + Battery)
- 7.4v 2S 1100 mah LiPo Battery
- 7.4v 800 mah output balance Li-Ion/LiPo wall charger
- Run time specified to: about 10 min
- Charging time specified to: about 120-150 min
- Manual and plastic hex wrench included
- 4 x AA batteries required for transmitter (not included)

WLToys A959-B SPECIFICATIONS identical to the A959 except:
- Model Names: WLToys Vortex A959-B & WLToys Brave Pro
- Green/white/black body color scheme
- Top Speed specified to 70 kph/43 mph (measured to 58-59 kph)
- 540 Type Brushed Motor w/ 540 mount
- T-Plug Connectors (ESC + Battery)
- 27T Pinion and 42T Spur
- Metal Diff Cups
- Metal Main Drive Shaft
- White wheels (with grey paint)
- 4 x Double Wheel Nuts
- 7.4v 2S 1500 mah LiPo Battery
- Run time specified to: About 6 min
- Charging time: About 120-150 min

You can find specifications of the A959-A and A959 Factory Upgraded Version in Part 1 of this series.

Specifications may differ or change compared to the particular WLToys Vortex, Brave Pro and Storm CC units that I received. Please visit Banggood to see current specifications for units sold.