MINI’s John Cooper Works, or JCW, division is tasked with one of the enjoyable missions on the planet. They take run-of-the-mill MINI vehicles and SUVs — that are already fairly gratifying proper out of the field — and switch them into extra centered variations of themselves. The following era 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 formulation? We sit down with Patrick Häussler, the MINI engineer chargeable 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 once we ask the place the engineers start with regards 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. “When you’ve got very heavy steering, a automobile may really feel numb,” Patrick says. “Too mild, and it would really feel a bit bit nervous.” The concept is to seek out the right medium. One other issue MINI seems 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 without doubt one of the most crucial parts to how a automobile feels, in response to 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 regulate themselves based mostly on street inputs—softening for smaller, speedy 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 additional camber on the entrance axle, serving to to maximise grip in corners.
The J01 MINI Cooper JCW Electrical, then again, makes use of an easier 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 pleased with 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 stunned us probably the most. With its longer wheelbase, wider monitor, and 40mm larger heart of gravity, it’s an even bigger automobile than both Cooper. MINI initially thought they may carry over a lot of the J01’s setup to the Aceman, however Patrick says that didn’t work in any respect. They’d 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 automobile… a sports activities tire isn’t at all times the most effective with regards 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 cut back understeer and even encourage oversteer, making the automobile extra playful and adjustable—form of like BMW M’s MDM mode. It provides you simply sufficient freedom to have enjoyable, whereas nonetheless providing a security web in the event you get in over your head.
Talking of overconfidence, Patrick recollects testing the JCW with DSC totally off. “I turned in, received sideways, and it was cool. However you can’t try this for a buyer,” he says. MINI tunes the DTC (Dynamic Traction Management) mode to offer a stability 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 a bit 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 doable—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 Totally different Vehicles, Three Personalities
Whereas we loved our time with all three JCW merchandise, every had distinct character traits that made every one gratifying another way. That’s not accidentally. Extra on that within the full evaluations developing. Ultimately, Patrick and his crew labored exhausting to ensure each JCW product nonetheless feels agile and enjoyable.
Take a look at 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.
