MINI’s John Cooper Works, or JCW, division is tasked with one of the vital enjoyable missions on the planet. They take run-of-the-mill MINI vehicles and SUVs — that are already fairly pleasurable proper out of the field — and switch them into extra targeted variations of themselves. The following technology of MINI is upon us, and which means a brand new spherical of JCW merchandise, too. However what precisely goes into turning a MINI right into a JCW? Maybe extra importantly, how does electrification issue into the enjoyable method? We sit down with Patrick Häussler, the MINI engineer answerable for the J01 JCW Electrical and J05 Aceman JCW, to study extra.
Beginning From the Floor Up
“The very very first thing is at all times the springs,” Patrick begins after we ask the place the engineers start relating to JCW-ing a MINI. After the springs come the dampers, however that’s not all that will get tinkered with. New anti-roll bars, stabilizers, bump stops are added, and extra camber will get dialed in. After locking within the “{hardware},” as Patrick calls it, MINI turns its consideration to the steering. “You probably have very heavy steering, a automobile may really feel numb,” Patrick says. “Too mild, and it would really feel just a little bit nervous.” The thought is to seek out the proper medium. One other issue MINI appears at is at-speed steering; clearly, round city, you don’t need heavy steering. However at freeway speeds, you need one thing with some heft to keep away from twitchiness. Steering is among the most crucial elements to how a automobile feels, in accordance with Patrick. We agree.
Right here’s the place the {hardware} begins to vary. The gasoline-powered F66 MINI Cooper JCW options frequency-selective dampers (FSD). These mechanical dampers alter themselves based mostly on highway inputs—softening for smaller, fast bumps and firming up for bigger impacts. It’s not a totally adaptive digital system, however Patrick says it provides the automobile an impressively versatile trip, mixing consolation with sharp physique management. MINI engineers additionally dialed in further camber on the entrance axle, serving to to maximise grip in corners.
The J01 MINI Cooper JCW Electrical, alternatively, makes use of a less complicated sport suspension setup with out the frequency-selective tech. Patrick tells us they tried a extra superior system early in growth, however they weren’t proud of the way it felt on the heavier electrical platform. So as a substitute, they went with a conventional mechanical sport suspension, balancing consolation and efficiency the old school approach—with cautious tuning of spring and damper charges.
Then there’s the Aceman JCW, which shocked us essentially the most. With its longer wheelbase, wider observe, and 40mm greater middle of gravity, it’s an even bigger automobile than both Cooper. MINI initially thought they might carry over a lot of the J01’s setup to the Aceman, however Patrick says that didn’t work in any respect. That they had to return to the drafting board, retuning the springs, dampers, stabilizers, bump stops, and steering to make it really feel worthy of the JCW badge. Apparently, the steering on the Aceman was made deliberately lighter than the Cooper JCW. Why? He explains that including an excessive amount of steering weight to an even bigger, heavier automobile could make it really feel sluggish and sluggish. Lightening it up helps protect the MINI’s signature agile really feel—particularly round city.
Get a Grip: Traction Issues
The electrified J01 MINI Cooper JCW brings a maybe understated problem with it: tires. “Because it’s an electrical car… a sports activities tire isn’t at all times one of the best relating to rolling resistance,” Patrick explains. Rolling resistance impacts EV vary. MINI wanted to suit a tire that balanced sportiness with effectivity, and Patrick thinks they “did fairly good.”
In fact, with all that electrical torque on faucet, traction administration turns into much more necessary. “For this one, we actually labored on yaw momentum enhancement,” Patrick says. This technique makes use of delicate braking inputs to scale back understeer and even encourage oversteer, making the automobile extra playful and adjustable—type of like BMW M’s MDM mode. It provides you simply sufficient freedom to have enjoyable, whereas nonetheless providing a security web when you get in over your head.
Talking of overconfidence, Patrick remembers testing the JCW with DSC totally off. “I turned in, obtained sideways, and it was cool. However you can not try this for a buyer,” he says. MINI tunes the DTC (Dynamic Traction Management) mode to offer a steadiness between freedom and stability—what Patrick calls a “parachute within the background” to assist save drivers when issues get sketchy.
Torque steer—one thing you typically really feel in highly effective front-wheel-drive vehicles—is one other issue MINI needed to handle. Patrick really embraces just a little little bit of torque steer, because it provides drivers extra suggestions when pushing the automobile to its limits. “We need to have as a lot suggestions as potential—particularly for the Cooper—with out it pulling you someplace out of the nook,” he explains. The crew rigorously tuned torque steer compensation so the automobile feels alive however by no means unwieldy.
Three Completely different Automobiles, Three Personalities
Whereas we loved our time with all three JCW merchandise, every had distinct character traits that made each pleasurable differently. That’s not by chance. Extra on that within the full critiques arising. In the long run, Patrick and his crew labored arduous to verify each JCW product nonetheless feels agile and enjoyable.
Try the video for extra insights and tell us which one you’d choose. Gasoline? Electrical? Or the do-it-all Aceman? We’d love to listen to your ideas.
