Buying an electric motor kit for longboard builds is honestly one of the best ways to breathe new life into that old deck gathering dust in your garage. You don't have to drop two grand on a pre-built board just to get up those annoying hills on your commute. For a fraction of that price, you can pick up a kit, spend a Saturday afternoon in the garage, and end up with a custom machine that fits exactly how you like to ride.
The beauty of going the DIY route isn't just about saving money, though that's a huge perk. It's about knowing your gear. When you buy a pre-assembled board from a big brand, you're stuck with whatever parts they decided were "good enough" for the price point. When you choose your own components, you decide if you want a speed demon that hits 30 mph or a high-torque beast that can climb San Francisco-style inclines without breaking a sweat.
Why Choose a Kit Over a Pre-Built Board?
If you've been browsing the web for electric skateboards, you've probably seen some flashy ads. They look great, but the moment something goes wrong—like a motor burning out or a battery losing its charge—you're usually out of luck. Most of those "off-the-shelf" boards are sealed units. Good luck finding a replacement part that isn't proprietary and overpriced.
With an electric motor kit for longboard projects, you're the mechanic. If a belt snaps, you know exactly how to swap it. If you want more range, you can upgrade the battery later without having to buy a whole new setup. It's a much more sustainable way to get into the hobby. Plus, there's a certain level of pride that comes from zooming past someone on a board you basically built from scratch.
Hub Motors vs. Belt Drives
This is the first big decision you'll have to make. Most kits come in one of these two flavors, and they feel completely different under your feet.
The Stealthy Hub Motor
Hub motors are built directly into the wheels. They're super popular for beginners because they look "clean." Since the motor is tucked inside the urethane, your board looks like a standard longboard at a distance. They're also incredibly quiet. If you want to ride through a park without drawing a ton of attention, hub motors are the way to go.
The downside? There's less "meat" on the wheel. Because the motor takes up space inside, the layer of rubber (urethane) is thinner. This means you'll feel more vibrations from the road. If you live somewhere with rough pavement, your feet might start to feel like they're buzzing after a few miles.
The Powerful Belt Drive
Belt drives use a motor mounted to the truck that spins the wheel via a rubber belt. These are the gold standard for performance. Because of the gearing ratio, they offer way more torque. If you're a heavier rider or you deal with lots of hills, a belt-driven electric motor kit for longboard use is going to be your best friend.
They also allow you to use "real" longboard wheels. You can slap on some big, squishy 100mm wheels and roll over cracks and pebbles like they aren't even there. The trade-off is the noise—they have a distinct "whirring" sound—and you'll have to replace the belts occasionally when they wear down.
Understanding the "Brains" of the Kit
Once you've picked your motors, you need to think about the ESC, or Electronic Speed Controller. Think of this as the brain of your board. It takes the signal from your handheld remote and tells the battery how much power to send to the motors.
A lot of cheap kits come with "generic" ESCs that can feel a bit jerky. You push the trigger, and the board jumps out from under you. Or you hit the brakes, and it tries to throw you over the front. Smoothness is everything when you're going 20 mph. Look for kits that mention "VESC" (an open-source standard) or have high-quality sine-wave controllers. These give you that "locked-in" feeling where the board responds exactly how you expect it to.
Let's Talk About the Battery
The battery is usually the most expensive part of any electric motor kit for longboard build, and for good reason. It determines how far you can go and how much punch the motors have.
When looking at battery specs, don't just look at the "Ah" (Amp-hours). You want to look at the "Wh" (Watt-hours). A higher Watt-hour rating means more range. As a general rule of thumb, you'll get about one kilometer of range for every 10Wh, depending on your weight and how fast you're going.
Also, consider where the battery is going to live. Most kits come with an enclosure that you bolt to the bottom of your deck. Make sure your deck is flat enough for the enclosure to sit flush. If you have a super flexy board, you might need a "split" enclosure so the battery doesn't crack when the board bends.
The Installation Process
Putting together an electric motor kit for longboard isn't as scary as it sounds. Most modern kits are "plug and play," meaning you don't need to be an electrical engineer or know how to solder.
Usually, the process goes something like this: 1. Swap out your rear trucks for the motorized ones included in the kit. 2. Drill a few holes in your deck to mount the battery and ESC enclosure. 3. Connect the wires from the motors to the ESC. 4. Grip tape the top of the board to hide any bolt heads. 5. Pair your remote and go for a slow test ride.
The most important tip I can give you is to use Blue Loctite on every single bolt. Electric skateboards vibrate a lot. If you don't use thread locker, your motor mounts or even your wheels can slowly rattle loose over a few weeks. It's a cheap insurance policy against a very bad day.
Maintenance and Safety
Once you're up and running, you can't just forget about the hardware. Unlike a regular skateboard, there's a lot that can go wrong with an electric one. I usually do a "shake test" before every ride. Just pick the board up a few inches off the ground and drop it. If you hear anything rattling, find out what it is and tighten it.
And please, wear a helmet. I know, I know—it's not the coolest look—but hitting a pebble at 5 mph is one thing; hitting a pothole at 22 mph is a completely different story. Since you're using an electric motor kit for longboard power, you're moving much faster than a traditional skater. Your reaction time needs to be faster, and your gear needs to be tougher.
Making the Final Call
At the end of the day, building your own board is a hobby in itself. You'll spend time tweaking the belt tension, adjusting the acceleration curves in an app, and probably shopping for even faster motors six months from now.
It's a rabbit hole, for sure, but it's a fun one. Whether you're trying to cut down on your gas bill or you just want a new way to explore your neighborhood, an electric motor kit for longboard builds is the perfect entry point. It turns a piece of wood and some wheels into a legitimate transportation tool that fits in your trunk or under your desk at work.
So, grab that old deck, find a kit that fits your budget, and get building. Just remember to take it easy on that first ride—those motors have more kick than you might expect!