The Slack Core 920R is the fastest electric scooter in the world and it is not even close. With a tested top speed of 90.1 MPH and 33,600 W of raw motor power, this hyperbeast is in a league of its own.
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Retailing around $8,000 and produced in limited batches, it's not easy to get your hands on. It leans more towards the "boutique" category compared to production models.
The Slack Core 920R doesn't just have the highest top speed we've tested; it also tops the charts in acceleration. Despite taming dozens of ultra-performance scooters, going full throttle on the 920R was next-level scary and fun.
The ride quality is incredibly smooth. Stability is excellent at high speeds, and the tires feel great on the road despite having limited tread.
What really blew me away is how Slack was able to pack so much power into a 105.8-pound scooter. It is by far the best on this list in terms of speed to weight ratio.
The 2,592 Wh battery might seem small for its price, and yes, it drains fast if you're pushing the motors hard. But let's be clear: this scooter is more about hitting extreme speeds than long-range cruising.
There's nothing quite like the Slack Core 920R for dare-devils and speed enthusiasts.
The power of a motor is determined by its voltage and watts.
Voltage signifies the intensity at which electricity is being pushed through a scooter&#;s motor. Typically, these motors are either 36V, 48V, 52V, 60V, 72V or, in rare cases, 84V. As part of my tests, only those with voltages above 52V made the cut.
Watts, on the other hand, are units of measurement that determine the size of a motor. This is important as it&#;s a telling figure of the amount of power that the motor can deliver &#; including both nominal and peak power (which I&#;ll cover next). Only those scooters with motors rated over W were considered for a place in my coveted list of the fastest electric scooters.
A scooter&#;s nominal power refers to the amount of power that a motor can produce continuously. Peak power, meanwhile, refers to the instantaneous injections of energy that a motor is capable of before it overheats.
Here, I used my independently gathered data to compare nominal and peak power outputs relative to price (i.e. identifying the scooters with the most powerful outputs per dollar). It&#;s important to note, however, that the scooters up for comparison have already passed several tests to ensure overall quality (i.e. I didn&#;t just choose random cheap powerful scooters, but instead made a concerted effort to compare models from reputable brands).
The ultimate vanity metric when it comes to fast scooters is top speed. Testing each scooter required a dry and flat road, whilst I also made sure to have each fully charged with maxed-out performance settings and their tires inflated to the recommended PSI.
For scooters that exceeded reasonable top speeds (i.e. some went as fast as 65 mph), I was not able to verify true speed data because I didn&#;t have access to enough runway to safely reach those speeds. This is a common issue among reviewers since testing to this degree would require either access to a controlled automotive test track, or the investment of hundreds of thousands of dollars to build one. I have, however, made recommendations based on comparative data gleaned from my electric scooter database, and reputable third-party reporting (i.e. other industry experts and riders).
Further Information:How I Test Top Speed
While top speed can be considered an ego metric, acceleration is the truest indicator of a scooter&#;s blistering power. If you ask any reputable reviewer in the industry, they&#;ll agree that a fast acceleration rate is a more important factor to consider than top speed. Riding at extreme speeds can be dangerous while accelerating for short bursts is a more enjoyable way to your heart thumping and adrenaline pumping.
To establish trustworthy results, I conducted multiple acceleration tests across different intervals (i.e. 0-15 mph, 0-25 mph, etc). For each interval, I conducted 3x two-way directional runs on a flat, dry road, and then averaged the data (in seconds). To ensure consistency across each scooter, zero-start modes were enabled, the performance settings were dialed up to the max, the tires were pumped up to their recommended PSI, and the batteries were fully charged.
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In addition to the acceleration data, I made assessments on the amount of wheel spin and the responsiveness of the throttles.
Further Information:How I Test Acceleration
Controllers are the brain and central nervous system of an electric scooter. They&#;re responsible for the coordination of how battery power is delivered to the motors, throttle, display, wheel sensors, regenerative braking systems, and anything else that requires electricity. But, some controllers are better than others.
The higher the amps and voltage of a controller, the more power it can deliver. Typically, a higher voltage and amperage result in greater torque, faster acceleration, and higher top speeds.
Besides this, there are two types of controllers: Square Wave and Sine Wave. Square Wave units release power instantaneously, while with Sine Wave variants, the release is more gradual. Some riders love the in-your-face hit of the former, though the latter grants you a smoother and more controlled throttle response. I assessed the responsiveness of the controllers during my top speed and acceleration tests.
While riding fast, the control you&#;re able to exert over a scooter is vitally important. Aside from testing each scooter hands-on to garner insights into their riding experience (i.e. checking for speed wobble), I also conducted several assessments to determine how the geometry of each scooter&#;s frame influenced its stability.
Here, I measured the angle at which the steering column is positioned in relation to a vertical axis through the front axle (otherwise known as the rake angle). The smaller the angle, the less effort required to turn the handlebars, but the less stable the scooter. Conversely, a larger rake angle requires more effort to turn but makes the scooter more stable at higher speeds. During my assessments, I made sure to select the scooters that hit the sweet spot between the two to maintain both stability and maneuverability.
Then I measured handlebar width since there&#;s a direct correlation between this and control (the wider the bars, the greater the control). As a result, I only selected the scooters that offered ample control. Other measurements, including the deck-to-handlebar height, usable deck space, and kickplate angle were assessed, too.
Similar to geometry, weight distribution can affect a scooter's handling. As a result, I made sure to get a good feeling of each scooter selecting those that I felt distributed their weight evenly across their frame. To make this assessment, I searched for imbalances (i.e. a bottom-heavy design that caused the steering column to be underweight and twitchy). If I couldn&#;t find any, then the scooter scored highly.
The last area of assessment was made on how responsive, nimble, and agile the tires were. In particular, I focused on their size, profile, and tread. Based on my tests, the top performers were those that measured at least 10 inches high, had rounded front-on profiles, and lightly patterned treads. Combined, these design attributes were able to maintain the most traction.
Further Information:How I Test Handling and Ride Quality
Safety is paramount when it comes to riding fast. Most crucial of all, of course, is braking power. To ascertain a model&#;s prowess in this area, I measured the distance it took for each to stop from 15 mph with measuring tape. These tests were conducted five times. If electronic or regenerative braking systems were present then I dialed their strength up to the maximum. I also assessed the position and responsiveness of the brake levers.
Based on my tests, a stopping distance of less than 3.5 meters is good, while anything below 2.5 meters is excellent.
Further Information:How I Test Braking Performance
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