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QUADIFYRC RC Car Review and Upgrade Guides

WL TOys 124019 Speed Run build and tricks I've learned on the way

12/6/2021

11 Comments

 
The WL Toys 124019 is a small and fast car out of the box - it'll do 55km/h on the old technology brushed motor that comes stock out of the box. For bashing and off-road I prefer to upgrade with physically smaller and more efficient brushless motors but if straight-line on road speed is your objective as is the case here, then using a 3650 sized motor can get you massive speed... there are many examples where this car can go well over 100mph. The objective of my build here is to see what kind of speed I can get without pushing the budget or modifications too far - bolt in parts, stock body and a car than is as reliable as stock and can easily be converted back.
Picture
For this build I've chosen the WL Toys 124019 which is a long-wheelbase version of the popular 144001. The reasons this car makes for a good speed run build is:
  1. It's cheap - around $100-$120
  2. It has a fairly strong and efficient 4wd drive line
  3. The comparatively massive brushed motor can easily be replaced with a comparatively massive brushless motor
  4. The long wheelbase allows for more room for large components (namely ESC and motor)
  5. The car is relatively durable with low cost replacement parts
Let's get on to the build which I have broken down into sections. We'll start with the powertrain which most of you are here for but I'll also cover important lessons in wheel/tyre choice, suspension set up, aero, speed measurement and driving technique. Read on for more

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WL Toys 144001/124018/124019 Upgrade: Brushless Speed Run Build and setup full Guide

6/10/2020

16 Comments

 
The WL Toys 144001 is a small 1/14 scale 4wd buggy with a massively oversized brushed motor that can reach well over 30mph. When this massive brushed motor is replaced with a massive brushless motor the top speed can become over triple that with the right setup. The below guide goes into detail the build components I used for such a build, the build process and setup to optimise handling.
Picture
By now you've probably seen some wild speed run builds based on the WL toys 144001 of up to and over 100mph. At the top end of the scale these are highly customised with expensive race-oriented gear and outboard twin-battery power supply. The objective of my build was stealth: to retain the stock look, making everything fit (somewhat tightly) under the stock bodyshell and be bolt-on without the need for machining or fabrication i.e. as simple to replicate as possible. For this reason I have specifically chosen to run my car with stock gearing on 2-3s only. To that end here are the parts I chose and why,
Parts used for build:
I've separated this into power system for the key components...
Picture
Flycolor Lightning 80A Partial Waterproof Brushless ESC For 1/10 RC Car This was my favourite component. For those unaware Flycolor is an ESC brand with a strong heritage in quadcopter ESCs and I trust them. This ESC is very reasonably priced at $40-45 and had excellent build quality with support for sensored or sensorless motors and full programming by way of the power key. It supports 2-3s @ 80A continuous which is ideal for my build. You will need to solder power and motor wires (included) which allows you to keep short wire runs - crucial in this build
Sadly this ESC is no longer available, I recommend the Hobbywing 10BL120 ESC instead which is very similar with a little more currentt (120A)

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