Tech Section: Dirt-Mile Aerodynamics & Mechanical Control
Wrestling a heavy 3,300-pound, 700-horsepower stock car on the Springfield Mile requires a complete re-engineering of the vehicle's standard asphalt geometry. Why? Traditional pavement setups lack the roll center mobility and high lateral compliance required to slide the chassis smoothly through long, flat fairground corners. So What? Mechanics must dial in extreme rear-end bias adjustments to hook up on the low side and establish throttle-steering capabilities, or face severe snap-loose spins on corner entry.
Modified Grille Mesh Filtration: Teams have integrated coarse wire mesh across front air intakes. Why? Heavy, flying wet clay kicked up in the opening laps will instantly pack the tight radiator gills. So What? This mesh protects the engine's heat exchanger; without it, mud blockages would restrict airflow, causing water temperatures to spike over 240°F and triggering engine failures by Lap 15.
Lap 50 Stage Break Execution: The 2026 rule structure mandates a scheduled mid-race break at Lap 50. Why? This operational window allows pit crews to manually scrape packed mud from wheel wells, pull windshield tear-offs, and perform chassis adjustments under a yellow-flag freeze. So What? This strategy completely neutralizes the speed of standard pit road servicing, shifting the competitive advantage entirely to crew chiefs who can alter wedge and tire pressures to fit the emerging dry-slick track profile.
Daytime "Dry-Slick" Groove Transitions: The afternoon sun will bake the track surface rapidly. Why? Strong UV exposure evaporates soil moisture, turning the tacky clay into a hard-packed, dusty gloss. So What? The track will transition from high-grip side-bite early on to a hard-packed "black groove" along the bottom, making ultra-precise throttle control the ultimate separator of speed.
Lap 50 Stage Break Execution: The 2026 rule structure mandates a scheduled mid-race break at Lap 50. Why? This operational window allows pit crews to manually scrape packed mud from wheel wells, pull windshield tear-offs, and perform chassis adjustments under a yellow-flag freeze. So What? This strategy completely neutralizes the speed of standard pit road servicing, shifting the competitive advantage entirely to crew chiefs who can alter wedge and tire pressures to fit the emerging dry-slick track profile.
Daytime "Dry-Slick" Groove Transitions: The afternoon sun will bake the track surface rapidly. Why? Strong UV exposure evaporates soil moisture, turning the tacky clay into a hard-packed, dusty gloss. So What? The track will transition from high-grip side-bite early on to a hard-packed "black groove" along the bottom, making ultra-precise throttle control the ultimate separator of speed.
Weekend Intelligence History (Hard Assets)
- Goodyear Dirt Compounds (v2): Goodyear has brought dirt-specific compounds designed with a deeper, open tread pattern. Why? This design slings clay out of the tire face to prevent the surface from becoming frictionless slick rubber. So What? Drivers must limit wheel-spin early; excessive throttle-heavy spinning will bake the compound and severely degrade lateral grip by the final 25 laps.
- Standard ARCA Dirt Configuration (v2): Suspension dampening, steering linkages, and transmission gearing are customized for the Springfield Mile. Why? Pavement setups lack the high-load vertical shock travel necessary to handle horse-racing track undulations. So What? If suspension components do not accommodate maximum wheel travel, the car will bounce violently, lifting the contact patch and killing traction.
- Modified Pit Road Rules (v2): No high-speed green-flag service is permitted. Why? The uneven dirt pit lanes pose severe jack-sink and air filter clogging hazards. So What? Teams are forced to execute their primary strategy changes during frozen-field breaks, removing pit stop speed as a competitive performance metric.
- Sun-Baked Clay Track Surface (v2): Warm afternoon ambient temperatures (upper 70s to mid-80s°F) accelerate the track drying process. Why? Heat extracts moisture from the clay, accelerating the shift from tacky mud to a dry-slick glaze. So What? Adjustments made during Sunday morning practice will be obsolete by mid-race, requiring crew chiefs to proactively "set up ahead" of the track drying out.
Drivers & Teams Intelligence: Official 25-Car Entry List
The Calypso 100 entry list features exactly 25 cars—the largest field fielded on a dirt mile since 2017. Why? The historical prestige of the fairgrounds and the unique challenge of dirt-mile racing attract local favorites and developmental drivers to test their skills. So What? This high entry density increases the threat of multi-car incidents in dirty air, making qualifying position a premium commodity.
| Car No. | Driver | Hometown | Sponsor | OEM | Car Owner | Crew Chief |
|---|---|---|---|---|---|---|
| 8 | Sean Corr | Goshen, NY | Nesco Bus Sales/STS/The Trans Group | Chevrolet | John Corr | Adam Murphy |
| 10 | Tim Monroe | Elmwood, IL | Mark Rumbold Farms/Illinois Deer Hunters | Ford | Andy Hillenburg | Nathan Davis |
| 11 | Tony Cosentino | Mansfield, OH | Fast Track Racing/Universal Technical Institute | Chevrolet | Andy Hillenburg | Mike Sroufe |
| 12 | Takuma Koga | Nagoya, Japan | TAKT/Fast Track Toyota Racing | Toyota | Dustin Hillenburg | Andrew Kiernan |
| 16 | Kelly Kovski | Springfield, IL | Brandt Professional Ag/Schluckebeir Farms/Allgaier Perf | Chevrolet | Kelly Kovski | Jon Hanson |
| 18 | Max Reaves | Trinity, NC | Cook Out | Toyota | Joe Gibbs | Matt Ross |
| 19 | Kenna Long | Otsego, MI | Maples Motorsports | Chevrolet | Michael Maples Jr | Colin Flueckiger |
| 20 | Jake Bollman | Huntinging Beach, CA | Nitro Motorsports | Toyota | Joe Tovo | Doug George |
| 25 | Gavan Boschele | Mooresville, NC | Toyota Racing | Toyota | Nick Tucker | Shane Wilson |
| 28 | Carson Brown | New London, NC | Klean Freak | Chevrolet | Mark Webb | Steven Dawson |
| 48 | Brad Smith | Shelby Township, MI | Hillman Companies | Ford | Brad Smith | Jeff Smith |
| 55 | Isabella Robusto | Fort Mill, SC | Mobil 1 | Toyota | Joe Tovo | Glenn Parker |
| 70 | Thomas Annunziata | Colts Neck, NJ | JBL | Toyota | Nick Tucker | Shannon Rursch |
| 77 | Taylor Reimer | Tulsa, OK | Buzzballs | Chevrolet | Mark Webb | Kevin Reed Jr |
| 79 | Isaac Kitzmiller | Maysville, WV | A.L.L. Construction/Carter CAT | Chevrolet | Codie Rohrbaugh | Doug Howe |
| 81 | Kevin Campbell | Bolivar, MO | 1st Phorm | Chevrolet | Kevin Campbell | Mason Campbell |
| 83 | Brayton Laster | Greenwood, IN | CRI0386.com | Ford | Brian Clubb | Chris Porter |
| 86 | Jeff Maconi | Wilbraham, MA | Real Property Boston | Ford | Alex Clubb | Jon Clubb |
| 89 | Chase Howard | Nesbit, MS | shopangryduck.com | Chevrolet | Tim Goulet | Tim Goulet |
| 91 | Shawn Allen Jr. | Wichita, KS | Sandlian Iron & Metal/Maples Motorsports | Chevrolet | Michael Maples | Kyle Totman |
| 97 | Jason Kitzmiller | Petersburg, WV | A.L.L. Construction/Carter CAT | Chevrolet | Codie Rohrbaugh | Frank Kimmel |
| 98 | Dale Shearer | Chillicothe, MO | Shearer Speed | Toyota | Dale Shearer | Jeremy Petty |
| 99 | Michael Maples | Choctaw, OK | Maples Motorsports | Chevrolet | Michael Maples | Chris Vanscoy |
| 03 | Alex Clubb | Morris, IL | CRI0386.com | Ford | Alex Clubb | Brian Clubb |
| 06 | Trenton Masters | Columbia, MO | Peterson Motorsports | Toyota | Wayne Peterson | Nate Moeller |