If you're still running the stock setup, swapping in a micro t brushless motor is basically the best favor you can do for your little RC truck. Let's be real for a second: the Losi Micro-T is an absolute classic, but the original brushed motors were never meant to set the world on fire. They're fine for driving around the kitchen floor, sure, but once you've tasted the raw power of a brushless system, there's just no going back. It turns a cute little toy into a legitimate handful of speed that can catch some serious air.
The Problem With the Stock Brushed Setup
We've all been there. You charge up the tiny NiMH battery, flip the switch, and zoom around for about five minutes before the motor starts feeling a bit sluggish. Brushed motors are simple, but they're also pretty inefficient. They create a lot of friction and heat, and eventually, those tiny internal brushes just wear out. If you've noticed your Micro-T doesn't have the "pop" it used to, or if it feels like it's struggling to climb over a rug, that old motor is likely the culprit.
Switching to a micro t brushless motor solves pretty much all of those headaches. Because there are no brushes rubbing against a commutator, there's way less friction. That means more of the energy from your battery actually goes into spinning the wheels instead of just turning into heat. You get longer run times, much higher speeds, and a motor that—honestly—will probably outlast the rest of the truck.
Choosing the Right KV Rating
When you start shopping for a micro t brushless motor, the first thing you're going to notice is the KV rating. If you're new to the hobby, this can look like a bunch of random numbers, but it's actually pretty simple. KV essentially tells you how many RPMs the motor will pull per volt of electricity.
In the world of 1/36 scale micros, you'll usually see options ranging from 7000KV all the way up to 10000KV or even higher. * Lower KV (7000KV - 8000KV): This is the sweet spot for most people. You get a massive bump in speed over stock, but it's still controllable. It's got great torque, which is perfect if you've added some weight to your truck with aluminum upgrades. * Higher KV (9000KV - 12000KV): This is for the speed demons. If you're running on a smooth surface like a basement floor or a high-grip carpet, these motors are insane. Just be warned: at these speeds, the Micro-T becomes a bit of a rocket ship. You'll probably end up doing backflips just by hitting the throttle too hard.
Don't Forget the ESC
Here's the thing about upgrading to a micro t brushless motor: you can't just plug it into the stock receiver/ESC unit. The original Losi electronics are designed for brushed power, and brushless motors require a completely different type of electronic speed controller (ESC) to function.
Back in the day, Losi sold a dedicated brushless combo, but those are getting harder to find now. Most hobbyists these days end up picking up a small 7A or 10A brushless ESC. You'll also likely need to swap out your receiver and use a modern 2.4GHz radio if you haven't already. It sounds like a lot of work, but honestly, getting rid of that old long-antenna AM radio is a huge upgrade in itself. No more "twitching" when you get more than twenty feet away!
The Battery Situation
You can technically run a brushless motor on the stock NiMH battery, but why would you? To really see what a micro t brushless motor can do, you need to move over to LiPo (Lithium Polymer) power.
A 2S LiPo (7.4V) is the standard for these builds. It's a total game-changer. The power delivery is much more consistent, and it gives the motor the "juice" it needs to reach those high RPMs. Just keep an eye on your gears. The jump from a stock brushed motor on NiMH to a brushless motor on LiPo is massive. You're looking at doubling, or even tripling, your top speed. It's the kind of power that makes the tires balloon out and the front end lift off the ground every time you punch it.
Installation and the "Tiny Screw" Struggle
Working on a Micro-T is a test of patience. Everything is so small. When you're installing your new micro t brushless motor, you're going to be dealing with screws that are barely larger than a grain of sand.
- Pro tip: Use a magnetic tray. If you drop one of those motor mount screws into a shag carpet, it's gone forever.
- The Gear Mesh: This is the most important part of the install. When you press the motor pinion against the plastic spur gear, you want just a tiny bit of play. If it's too tight, you'll melt the gears and stress the motor. If it's too loose, you'll strip the teeth off the spur gear the first time you pull a wheelie. A common trick is to slide a tiny piece of notebook paper between the gears, tighten the motor down, and then pull the paper out.
Heat Management in a Tiny Package
Even though brushless motors are more efficient, they can still get hot, especially because the Micro-T chassis is so cramped. There isn't much airflow under that tiny body. If you're running a high KV motor and doing back-to-back speed runs, give the motor a rest every few minutes.
You can actually find tiny clip-on heatsinks for these motors, and they do help a bit. But the best way to keep things cool is to make sure your drivetrain is butter-smooth. If your wheel bearings are gunky or your gear mesh is too tight, the micro t brushless motor has to work harder, which generates more heat. A well-maintained truck is a fast truck.
Is It Worth the Effort?
You might be wondering if it's worth spending the time and money to put a modern brushless system into a discontinued micro truck. My answer is a resounding yes.
There is something incredibly satisfying about having a vehicle that fits in the palm of your hand but can outrun most "toy grade" RCs that are five times its size. A brushless Micro-T is the ultimate "office crawler" or "basement racer." It's fast, it's durable, and it's just plain fun.
The micro t brushless motor swap isn't just about speed, though. It's about reliability. You don't have to worry about the motor fading halfway through a pack. You don't have to worry about cleaning carbon dust out of the motor can. You just plug it in and go.
Final Thoughts
If you've got an old Losi sitting in a drawer gathering dust, go ahead and pull it out. A quick search for a micro t brushless motor and a cheap ESC will give that truck a whole new lease on life. It's one of those projects that reminds you why RC cars are so much fun in the first place.
Sure, you might break a few parts—the stock plastic transmission gears are usually the first to go once you add brushless power—but that's all part of the hobby. Half the fun is the build, and the other half is seeing just how fast you can make a 1/36 scale truck go before it becomes a blur. Just keep your eyes on the road (or the hallway) and get ready to be impressed by what these tiny motors can actually do.